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Battery

Battery (2125)
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Battery life (69)
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Battery technology (44)
Cell battery (11)
Conventional battery (17)
Electric car battery (6)
Flexible battery (7)
Flow battery (80)
Fuel cell (235)
Lead-acid (12)
Metal-air batteries (101)
Potato battery (10)
Rechargeable battery (57)
Small battery (10)
Solar battery (15)

Last year, a fuel cell car was due to race in the prestigious Le Mans 24-hour race in France in June

and stored in a battery. When an added burst of speed is needed, a paddle behind the steering wheel provides a boost using that stored energy. n racing,

#Potato power: the spuds that could light the world Mashed, boiled, baked or fried? You probably have a preference for your potatoes.

Still, Rabinowitch and his team have discovered that actually launching potato power in the real world is much more complex than it first appears.

to demonstrate how batteries work. To make a battery from organic material, all you need is two metals an anode,

which is the negative electrode, such as zinc, and a cathode, the positively charged electrode, such as copper.

ut enough to construct a battery that could charge mobile phones or laptops in places where there is no grid,

Their cost analyses suggested that a single boiled potato battery with zinc and copper electrodes generates portable energy at an estimated $9 per kilowatt hour,

which is 50-fold cheaper than a typical 1. 5 volt AA alkaline cell or D cell battery,

Which raises an important question why isn the potato battery already a roaring success? In 2010, the world produced a staggering 324,181, 889 tonnes of potatoes.

why haven governments, companies or organisations embraced potato batteries? he simple answer is they don even know about it, reasons Rabinowitch.

The potatoes that don make it to the market could easily be turned into batteries. Pithy answer Yet in Sri lanka

and the best battery performance was obtained by chopping the plantain pith after boiling. With the boiled piths, they found they could power a single LED for more than 500 hours,

Despite all this, some are sceptical of the feasibility of potato power. n reality, the potato battery is essentially like a regular battery you buy at the store,

says Derek Lovley at the University of Massachusetts, Amherst. t just using a different matrix.

Basically, some people might not want to show off their potato battery to impress a neighbor. Still, it cannot be denied that the potato battery idea works

and it appears cheap. Advocates of potato power will no doubt continue to keep chipping away e

#How X-ray vision will fuel better car engines When particle accelerators hit the headlines, it's usually

and emails as long as batteries lasted desperately hoping for rescue, or information on a passage to safety.

and the battery level. Cars with GPS navigation systems can also collect detailed information about routes.

and a reviewer from the New york times. On a test drive, the reviewer claimed he ran out of battery power,

Or more specifically, they are keeping their battery topped up before range anxiety sets in.

Certainly, manufacturers have been trying to allay the fears of nervous drivers with blinking battery lights by investing in faster charging stations at more convenient locations.#

The fast chargers are like"drinking through a very thick straw#for batteries, says Gottfried."You can go from zero to full in less than a half an hour,

#if I need to sit for 15 minutes to top off my battery at a quick charge station, that's cool,

and construction methods, says the team, such as electrolytes that increase the energy density of batteries. Not to mention competitions like the World Solar Challenge,

As a result, machines using Bluetooth that previously ran for a few months on a coin cell battery,

and stored in a fuel cell that generates electricity. The catalysts are cheap, earth-abundant materials and form by self-assembly,

new laptops won let you remove batteries, and the whole lifecycle of technology is becoming shorter,

) HIV-1 virus. The process acts much like the jumper cables attached to a live battery recharging a dead one to get it running again,

shelters and antiaircraft batteries were targeted in the five camps. PKK headquarters located on Qandil Mountains in Northern Iraq were targeted reportedly in the attacks as well.

The company is almost ready to build a $5 billion igafactoryto produce enough lithium-ion batteries to drive down EV prices.

The smart-looking device is equipped also with a high capacity internal battery, which means you can store solar power for later

and 120-volt charging options that allow it to charge nearly three times faster meaning less than three hours for plug-in hybrids and less than six hours for full battery electrics.

plug-in hybrid electric buses that use rechargeable batteries to run on both electricity and diesel, battery electric buses that do not use any diesel fuel

and create no tailpipe emissions, or fuel cell buses powered by hydrogen. Benefits of commuting on electricity Though electric buses are not newhe first was introduced in Berlin in 1882lder models frequently required wires to hang over each bus route, marking bus paths through city streets.

Growing up in Cambridge, Massachusetts, I remember hearing loud pops as sparks flew from an intersection of overhead electric bus wires near my bedroom.

or iron-phosphate batteries that can be recharged from central stations prior to beginning each route or by hydrogen-powered fuel cells.

Better yet, battery electric and fuel cell buses produce zero tailpipe emissions, and can use renewable resources like solar

and wind power to charge their batteries or produce hydrogen to power fuel cells. Moreover, as Ie previously mentioned, driving on electricity is compared cheaper to driving on oil.

or fuel cell buses still have a ways to go to reach commercial scale, state and federal policies are helping the transition to cleaner bus fleets.

and the Federal Transit Administration has provided $13. 6 million for eight projects to advance the commercialization of American-made fuel cell buses. These incentives are important for helping further develop electric bus technology by reducing the upfront costs that remain a barrier

to the widespread adoption of electric and fuel cell buses. California, a usual suspect in the race for investing in clean transportation,

Developing additional policy levers on the state and federal level can help take battery electric and fuel cell buses beyond pilot programs and onto city streets near you.

A previous example of this was the National Fuel cell Bus Program, which invested in the research, development and testing of alternative fuels and related equipment,

and deployment projects to reduce the cost of fuel cells for transit use. In the push for no emissions buses, a few benefits are seen as being possible.

a coauthor of the study that was published on Jan 20 in the Proceedings of the National Academy of Sciences. he thing about cardiac pacemakers is that they are operated currently battery

a University of Illinois at Urbana-Champaign materials science and engineering professor. hen the battery runs out, you need to have surgery to replace it.

commercially available battery into the device. Thin, flexible mechanical energy harvester, with rectifier and microbattery, mounted on the bovine heart.

or without batteries. ur ultimate goal is to replace the battery of an implant altogether,

ut even extending the life of the implant own battery is useful. They grew rat smooth muscle cells on their prototypes to determine that the materials were not toxic.

The potential to eliminate batteries or, at least, the need to replace them frequently represents a source of motivation for continued work in these and related directions. e

automatically recovering energy that delivered to the batteries as electricity. Unique to the ELR extended range electric vehicle, Regen on Demand also allows a driver to instantaneously engage

and the China Automotive technology and Research center will work together to help speed the commercialization of plug-in and fuel cell electric cars in China and the U s. under an agreement signed Sept. 6 in Tianjin, China.

about the new initiative. e commend China for its commitment to further reduce emissions by greatly expanding the purchase of battery electric and fuel cell powered vehicles.

or using batteries, but both approaches have considerable drawbacks. Grid-connected sensors need cables, limiting where they can be used,

while battery-powered ones only last as long as their battery life. But what if sensors could harness energy directly from their environment from the sun, from ambient heat, from radio waves or vibrations?

and the SWAP coordinator at CTTC in Spain, says the design of energetically self-sufficient networks differs sharply from that of standard battery-powered ones. he goal is no longer to minimise energy draw so as to maximise the lifetime of the battery reserve,

had no sensory abilities, needed heavy batteries, and were difficult to keep clean. As a result, many amputees chose not to use them. hat we have developed could truly help people overcome these difficulties,

such as delivering higher energy efficiency (i e. more power with less battery consumption) over a wider spectrum of rotating speeds, decreasing resource dependency,

but ew partners are always welcome These partnerships could see Light-Rolls being involved in a myriad of sectors including automotive and building lighting applications, flexible solar cells and batteries and even consumer products and games.

"For instance, there is the problem of lithium batteries, which can catch fire easily if they are transported not properly,

The external component consists of the microphones, sound processor and batteries, while the implant has the electronics that send the stimulation pulses.

To meet this aim researchers are working on a battery that can be implanted safely in a human.

or batteries has been a big obstacle. Now engineers are developing a way to send power safely

Another advantage of the CARS-2 as well as subtests of the Kaufman Assessment Battery for Children selected for cognitive assessment is that the behavioral observations

andriux-uk/Flickr) ecause hearing aids rely on batteries, minimizing power consumption is a critical consideration in moving hearing-aid device technology forward,

But it has the potential to eliminate bulky batteries and clumsy recharging systems and lead to a type of medicine where physicians treat disease

But it is possible to build tiny batteries into microimplants, and then recharge these batteries wirelessly using the midfield system.

This is not possible with today technologies. ith this method we can safely transmit power to tiny implants in organs like the heart or brain,

Rogers says. ut chip-scale devices, batteries, capacitors, and other components must be reformulated for these platforms.

#dgy films are perfect catalysts for fuel cells Chemists have found an easy and inexpensive way to create flexible films from molybdenum disulfide a versatile chemical compound with edges that are highly efficient catalysts.

and as catalysts for hydrogen evolution reaction (HER) a process used in fuel cells to pull hydrogen from water.

Though they don t store as much energy as an electrochemical battery they have long lifespans and are in wide use

because they can deliver far more power than a battery. The researchers built supercapacitors with the films;

and 83 percent after 20000 cycles. e see anodization as a route to materials for multiple platforms in the next generation of alternative energy devicestour says. hese could be fuel cells supercapacitors and batteries.

and requires no batteries. That feature allows Tang to make devices that are smaller and cheaper than current sensors.

#Hybrid#dots#offer cheaper way to run fuel cells Last year chemist James Tour made graphene quantum dots from coal.

The result is a hybrid material that could make it much cheaper to generate energy with fuel cells.

So it s a superb hybridization. he material outperformed commercial platinum/carbon hybrids commonly found in fuel cells.

#Ant-size radios could help create Internet of things A new radio the size of an ant can gather all the power it needs from the same electromagnetic waves that carry signals to its receiving antenna no batteries required.

In fact if Arbabian's radio chip needed a battery which it doesn't a single AAA contains enough power to run it for more than a century.

A number of battery-free technologies exist that are powered by solar and ambient radio frequency waves.

and plan to make it smaller about the size of A d battery. A future version would include four chemicals that activate in different temperature ranges so the same device could be used in various climates. think our approach is uniquesays Chen Zhao lead author

#AAA BATTERY powers cheap water splitter A new device uses a regular AAA BATTERY to split water into hydrogen and oxygen.

The hydrogen gas could power fuel cells in zero emissions vehicles. The battery sends an electric current through two electrodes that split liquid water into hydrogen and oxygen gas.

Unlike other water splitters that use precious-metal catalysts the electrodes in the Stanford device are made of inexpensive and abundant nickel

Fuel cell technology is essentially water splitting in reverse. A fuel cell combines stored hydrogen gas with oxygen from the air to produce electricity

which powers the car. The only byproduct is water unlike gasoline combustion which emits carbon dioxide a greenhouse gas.

In 2015 American consumers will finally be able to purchase fuel cell cars from Toyota and other manufacturers.

and reuses existing Wi-fi infrastructure to provide internet connectivity to battery-free devices. Called Wi-fi backscatter this technology is the first that can connect battery-free devices to Wi-fi infrastructure.

Imagine a world in which your wristwatch or other wearable device communicates directly with your online profiles storing information about your daily activities where you can best access it all without requiring batteries.

Or battery-free sensors embedded around your home could track minute-by-minute temperature changes and send that information to your thermostat to help conserve energy.

This not-so-distant nternet of Thingsreality would extend connectivity to perhaps billions of devices.

and connect these devices to the internet has kept this from taking off. f Internet of things devices are going to take off we must provide connectivity to the potentially billions of battery-free devices that will be embedded in everyday objectssays Shyam Gollakota an assistant professor of computer science

or wearable technology could run without batteries or cords by harnessing energy from existing radio TV

#Power plant battery uses tanks of water Scientists have created new, water-based organic batteries that are built long-lasting

and from cheap, eco-friendly components. They built the new battery, which uses no metals or toxic materials, for use in power plants,

where it could make the energy grid more resilient and efficient by creating a large-scale way to store energy for use as needed. he batteries last for about 5,

000 recharge cycles, giving them an estimated 15-year life span, says Sri Narayan, professor of chemistry at the University of Southern California and corresponding author of the paper published online in the Journal of the Electrochemical Society. ithium ion batteries degrade after around 1,

000 cycles and cost 10 times more to manufacture. Narayan collaborated with G. K. Surya Prakash,

professor of chemistry and director of the Loker Hydrocarbon Research Institute. uch organic flow batteries will be game-changers for grid electrical energy storage in terms of simplicity, cost, reliability,

Renewable energy The batteries could pave the way for renewable energy sources to make up a greater share of the nation energy generation.

With batteries to store surplus energy which can be doled out as needed, that sporadic unreliability could cease to be an issue.?

The new battery is based on a redox flow designimilar in design to a fuel cell, with two tanks of electroactive materials dissolved in water.

While previous battery designs have used metals or toxic chemicals, Narayan and Prakash wanted to find an organic compound that could be dissolved in water.

Currently, the quinones needed for the batteries are manufactured from naturally occurring hydrocarbons. In the future, the potential exists to derive them from carbon dioxide,

The team has filed several patents in regard to the design of the battery and next plans to build a larger-scale version.

These fuel cells do not harvest electricity as an output. Rather, they use a small electrical input platform to generate hydrogen and increase the MEC efficiency even more.

#New battery turns wasted heat into energy Stanford university rightoriginal Studyposted by Dan Stober-Stanford on May 22 2014researchers have developed a new battery technology that captures low-temperature waste heat

and refining release tremendous amounts of low-grade heat to ambient temperaturessays Yi Cui an associate professor of materials science and engineering at Stanford university. ur new battery technology is designed to take advantage of this temperature gradient at the industrial scale. he new system

which states that the voltage of a rechargeable battery is dependent on temperature. o harvest thermal energy we subject a battery to a four-step process:

First an uncharged battery is heated by waste heat. Then while the battery is still warm a voltage is applied.

Once fully charged the battery is allowed to cool. Because of the thermogalvanic effect the voltage increases as the temperature decreases.

When the battery has cooled it actually delivers more electricity than was used to charge it. That extra energy doesn t appear from nowhere explains Cui.

It comes from the heat that was added to the system. The system aims at harvesting heat at temperatures below 100 C which accounts for a major part of potentially harvestable waste heat. ne-third of all energy consumption in the United states ends up as low-grade heatsays co-lead author Yuan

In the experiment a battery was heated to 60 C charged and cooled. The process resulted in an electricity-conversion efficiency of 5. 7 percent almost double the efficiency of conventional thermoelectric devices.

or more says Yang who notesâ that most heat recovery systems work best with higher temperature differences. key advance is using material that was not around at that timefor the battery electrodes as well as advances in engineering the system says co-author Gang Chen a professor

and manufacturing processes that are used already widely in the battery industryadds Lee. While the new system has a significant advantage in energy conversion efficiency over conventional thermoelectric devices it has a much lower power densityâ##that is the amount of power that can be delivered for a given weight.

and improve the speed of battery charging and discharging Chen adds. t will require a lot of work to take the next step. here is currently no good technology that can make effective use of the relatively low-temperature differences this system can harness Chen says. his has an efficiency we think is quite attractive.

whose casing serves as its battery or an electric car powered by energy stored in its chassis

The new device that Pint and Westover have developed is a supercapacitor that stores electricity by assembling electrically charged ions on the surface of a porous material instead of storing it in chemical reactions the way batteries do.

and operate for millions of cycles instead of thousands of cycles like batteries. In a paper appearing online in the journal Nano Letters Pint

One area where supercapacitors lag behind batteries is in electrical energy storage capability: Supercaps must be larger and heavier to store the same amount of energy as lithium-ion batteries.

However the difference is not as important when considering multifunctional energy storage systems. attery performance metrics change when you re putting energy storage into heavy materials that are needed already for structural integritysays Pint. upercapacitors store ten times less energy than current lithium-ion batteries

but they can last a thousand times longer. That means they are suited better for structural applications.

Sandwiched between the two electrodes is a polymer film that acts as a reservoir of charged ions similar to the role of the electrolyte paste in a battery.

There have also been recent press reports of several major efforts to develop multifunctional materials or structural batteries for use in electric vehicles and for military applications.

flexible batteries made from electrically conductive paper; new drug-delivery technologies; transparent flexible displays for electronic devices;

The results can be seen in batteries that drain faster and increasing heat dissipation that can damage delicate electronic circuits.

while draining the battery requires frequent replacement surgery. The researchers led by Suman Datta professor of electrical engineering tuned the material composition of the indium gallium arsenide/gallium arsenide antimony

are combined with the reactive substance a battery-powered handheld reader is used then to detect any fluorescence

#This is the first battery electrode that heals itself Stanford university rightoriginal Studyposted by Glennda Chui-Stanford on November 19 2013scientists have created the world s first self-healing battery electrode

and say it could open the door to better batteries for phones cars and other gadgets.

and spontaneously heals tiny cracks that develop during battery operation. elf-healing is very important for the survival and long lifetimes of animals

and plantssays Chao Wang a postdoctoral researcher at Stanford university and one of two principal authors of the paper. e want to incorporate this feature into lithium ion batteries

For the battery project Chao added tiny nanoparticles of carbon to the polymer so it would conduct electricity. e found that silicon electrodes lasted 10 times longer

and from all our data it looks like it s working. esearchers worldwide are racing to find ways to store more energy in the negative electrodes of lithium ion batteries to achieve higher performance while reducing weight.

it has a high capacity for soaking up lithium ions from the battery fluid during charging and then releasing them

when the battery is put to work. But this high capacity comes at a price: silicon electrodes swell to three times their normal size

and shrink back down again each time the battery charges and discharges. The brittle material soon cracks and falls apart degrading battery performance.

This is a problem for all electrodes in high-capacity batteries says Hui Wu a former Stanford postdoc who is now a faculty member at Tsinghua University in Beijing

and the other principal author of the paper. To make the self-healing coating scientists deliberately weakened some of the chemical bonds within polymersâ â##long chainlike molecules with many identical units.

The device wirelessly converts the microwave signal to direct current voltage capable of recharging a cell phone battery or other small electronic device according to a report appearing in Applied Physics Letters.

#How food can build better lithium batteries Cornell University rightoriginal Studyposted by Anne Ju-Cornell on October 29 2013a component of corn starch

and the yolk-shell structure of eggs can improve the durability and performance of lithium-sulfur battery cathodes report researchers.

Lithium-sulfur batteries are a promising alternative to today s lithium-ion batteries. here is currently a great need for high-energy long-life

and low-cost energy storage materials and lithium sulfur batteries are one of the most promising candidatessays Weidong Zhou a former postdoctoral researcher in Professor Hector Abruã a s lab at Cornell

and the Journal of the American Chemical Society. rom electric vehicles to solar and wind power applications for better lithium-based battery technologies are countless.?

Lithium-sulfur batteries could potentially offer about five times the energy density of today s typically used lithium-ion batteriessays Yingchao Yu a Phd student with Abruã a

and co-first author on the JACS publication. ut a lithium-sulfur battery is not a stable system as its capacity tends to fade over a short period of time. fter about 50 charge cycles the energy density of a lithium-sulfur

battery decreases rapidly due to a phenomenon called the polysulfide shuttling effect which is when the polysulfide chains in the battery s cathode (positive end) dissolve in the electrolyte the ionizing liquid that allows electrons to flow.

To combat this problem and stabilize the sulfur the researchers used amylopectin a polysaccharide that s a main component of corn starch. he corn starch can effectively wrap the graphene oxide-sulfide composite through the hydrogen bonding to confine the polysulfide among the carbon layerssays Hao Chen

and professor of chemistry and chemical biology. s an additive it greatly improves the cycling stability of the battery. n another approach to improving lithium-sulfur battery durability the researchers also report a new way

but the new method provides an internal void within the polymer shell called a olk-shellstructure. hen the lithium-sulfur battery was discharged fully the volume of the sulfur expanded dramatically to 200 percent.

and requires no batteries it could allow the manufacture of small lightweight and inexpensive location and identification tags for animals infrastructure (pipelines conduits for example)

or the batteries have no charge remaining. n addition to the applications discussed above such technology could be extended to other radiations such as magnetic resonance imaging (MRI) and light detection and ranging (LIDAR)

. ut we ve found an easy way to do it. nstead of storing energy in chemical reactions the way batteries do upercapsstore electricity by assembling ions on the surface of a porous material.

and operate for a few million cycles instead of a few thousand cycles like batteries. These properties have allowed commercial supercapacitors

Supercapacitors still lag behind the electrical energy storage capability of lithium-ion batteries so they are too bulky to power most consumer devices.

A new iller materialcan help put an end to dropped calls by making cell phones that tune to different frequencies without wasting battery power.

which drains cell phone batteries. The new type of tunable dielectric could greatly improve the performance of microwave circuit capacitors found in every cell phone

At the moment however the laboratory prototype is about the size of A d-cell battery and looks like a chemistry experiment with two electrodes one positive the other negative plunged into a bottle of wastewater.

and produce electricity that is captured by the battery s positive electrode. e call it fishing for electronssays Craig Criddle a professor in the department of civil and environmental engineering at Stanford university.

What is new about the microbial battery is a simple yet efficient design that puts these exoelectrogenic bacteria to work.

As reported in the Proceedings of the National Academy of Sciences at the battery s negative electrode colonies of wired microbes cling to carbon filaments that serve as efficient electrical conductors.

At that point it is removed from the battery and re-oxidized back to silver oxide releasing the stored electrons.

Engineers estimate that the microbial battery can extract about 30 percent of the potential energy locked up in wastewater.

Even so the microbial battery is worth pursuing because it could offset some of the electricity now used to treat wastewater.