and made it capable of continuously powering a battery-free surveillance camera. Even better, their work didn interfere with the router's data transfer speeds.
not only run battery-free temperature and camera sensors using Wi-fi signals from a distance of six and five metres respectively,
#This origami-style battery could double the life of wearable gadgets If you own a smartwatch
With these devices so central to our daily lives, scientists from all over the world are working on smaller, better-performing batteries,
The innovation here isn't so much the material used in the batteries-it's the same lithium-ion compound that makes up the smartphone batteries of today-but the way in
this new battery style can be extended and retracted like a car antenna, even while it's powering a device.
That means the stretchable battery can go places where normal batteries can't go, like the band of your smartwatch or inside a very thin section of a robot.
The batteries that the researchers have created can stretch and expand to more than 150 percent of their compacted size,
scientists have spent many years trying to work on batteries that can be folded in this way, but packs created from previous attempts at the technology would often break
The batteries produced by the team from the US and China overcome this problem by placing carefully calculated soft creases at various points along the battery's body.
The inventors say that these batteries could double the life of a smartwatch between charges, for example,
by being fitted into the band. What's more, the manufacturing process is reasonably straightforward. There is a tradeoff though-the shape of these batteries means they can't hold as much charge as a comparable rectangular one."
"When you ask a battery to be flexible like this, you give up some of the energy you can store in a given volume.
But if you're a designer trying to make the thinnest watch face possible, who knows?
but it could add some invaluable extra power where normal batteries are unable to go
-and that means these new kirigami batteries have a lot of potential for the years to come e
They use expensive batteries and chemicals that are difficult to source, and indiscriminately collect plenty other bugs besides mosquitoes-there's huge room for improvement in terms of the technology and its efficiency,
and oxygen components far more cheaply and efficiently than the batteries and semiconductor materials that have been used in the past.
Previous studies have shown that connecting an existing silicon solar cell to a water-splitting battery can produce hydrogen fuel,
even though this is still some way off the 15 percent achieved by silicon cells coupled to a battery."
so their solar cells can meet this 15 percent battery yield.""For the nanowires we needed 10,000 less precious Gap material than in cells with a flat surface.
But chemical batteries hold far more energy. Supercapacitors combine useful qualities of both--the fast charge/discharge of capacitors and high-energy capacity of batteries--into one package.
LIG supercapacitors appear able to do all that with the added benefits of flexibility and scalability.
or larger than those used in today's lithium-ion batteries. Today's batteries provide a reliable power supply for our smartphones electric cars
and laptops but are unable to keep up with the growing demands placed on them. Dr Semih Afyon a scientist at the Electrochemical Materials Institute sums up the fundamental idea that is driving battery research:
What we need is new chemistry and novel compounds to obtain safe better and longer-lasting batteries.
ETH researchers led by Afyon and Reinhard Nesper professor emeritus of chemistry have made now a discovery.
Over the course of their several years of research they discovered a material that may have the potential to double battery capacity:
Afyon used this vanadate-borate glass powder for the battery cathodes which he then placed in prototypes for coin cell batteries to undergo numerous charge/discharge cycles.
One battery with an RGO-coated vanadate-borate glass electrode exhibited an energy density of around 1000 watt-hours per kilogram.
This would be enough energy to power a mobile phone between 1. 5 and two times longer than today's lithium-ion batteries Afyon estimates.
Afyon currently works as a project leader in a research consortium led by Jennifer Rupp professor of electrochemical materials focused on developing an innovative solid-state battery.
which could be achieved by improving battery and electrode designs as well as by using coatings other than reduced graphite oxide i
"Potential applications range from battery anodes, to solar cells, to 3d electronic circuits and biomedical devices.""The 3d transformation process involves a balance between the forces of adhesion to the substrate and the strain energies of the bent,
) 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,
#'Bulletproof'Battery: Kevlar Membrane for Safer Thinner Lithium Rechargeables New battery technology from the University of Michigan should be able to prevent the kind of fires that grounded Boeing 787 Dreamliners in 2013.
The innovation is advanced an barrier between the electrodes in a lithium-ion battery. Made with nanofibers extracted from Kevlar, the tough material in bulletproof vests,
"Lithium-ion batteries work by shuttling lithium ions from one electrode to the other. This creates a charge imbalance,
the electrons have a path within the battery, shorting out the circuit. This is how the battery fires on the Boeing 787 are thought to have started."
"The fern shape is particularly difficult to stop because of its nanoscale tip, "said Siu On Tung, a graduate student in Kotov's lab,
so we can get more energy into the same battery cell size, or we can shrink the cell size,
Kevlar's heat resistance could also lead to safer batteries as the membrane stands a better chance of surviving a fire than most membranes currently in use.
so that batteries can charge and release their energy more quickly. The study,"A dendrite-suppressing solid ion conductor from aramid nanofibers,
and is fitted with a solar panel a wind turbine and a battery. The turbine runs at a speed of 10 to 200 revolutions per minute (rpm)
and has a lower output (100 W). An electronic control system manages the flow of energy between the solar panel the wind turbine the battery and the light.
#Engineer creates origami battery, for five cents Arraythe battery generates power from microbial respiration, delivering enough energy to run a paper-based biosensor with nothing more than a drop of bacteria-containing liquid."
"Dirty water has a lot of organic matter, "Choi says.""Any type of organic material can be the source of bacteria for the bacterial metabolism."
which a paper-based battery would create enough energy--we're talking microwatts--to run the biosensor.
Choi's battery, which folds into a square the size of a matchbook, uses an inexpensive air-breathing cathode created with nickel sprayed onto one side of ordinary office paper.
Choi, who holds two U s. patents, initially collaborated on the paper battery with Hankeun Lee,
"while working on an earlier iteration of the paper-based batteries, before he tried the origami approach."
such as operating batteries and catalysts. It could enable the manipulation of the inner workings of matter to understand,
#Key to quick battery charging time University of Tokyo researchers have discovered the structure and transport properties of the"intermediate state"in lithium-ion batteries--key to understanding the mechanisms of charge
and discharge in rechargeable batteries. These findings may help accelerate battery reaction speed and significantly shorten battery charging time.
Although there is strong demand to minimize battery-charging time, the mechanisms of battery charge and discharge reactions have yet to be understood fully.
While the existence of an"intermediate state"that accelerates battery charge and discharge reactions has been suggested,
there was no firm experimental evidence to support its existence and previous research had suggested that the short lifetime of the intermediate state would render a systematic investigation of its properties impossible.
Now Professor Atsuo Yamada's research group at the University of Tokyo Graduate school of Engineering have developed a novel technique to stabilize the intermediate state.
The group found a striped pattern of layers of densely and loosely packed electrons. Lithium ions distribute themselves so as not to disturb this striped pattern.
contributing significantly to accelerating lithium-ion battery charge and discharge reactions. The findings were contrary to expectations."
'Our group has pioneered the idea of using lithium-ion batteries to search for catalysts, 'Cui said.'
But in 2014, Stanford chemist Hongjie Dai developed a water splitter made of inexpensive nickel and iron that runs on an ordinary 1. 5-volt battery.
the Stanford team borrowed a technique used in battery research called lithium-induced electrochemical tuning.
The technique has been used in battery research for many years, but it's a new approach for catalysis. The marriage of these two fields is very powerful.'
#New manufacturing approach slices lithium-ion battery cost in half An advanced manufacturing approach for lithium-ion batteries, developed by researchers at MIT and at a spinoff company called 24m,
"says Yet-Ming Chiang, the Kyocera Professor of Ceramics at MIT and a cofounder of 24m (and previously a cofounder of battery company A123).
The existing process for manufacturing lithium-ion batteries, he says, has changed hardly in the two decades
and pumped through various compartments of the battery. The new battery design is a hybrid between flow batteries and conventional solid ones:
In this version, while the electrode material does not flow, it is composed of a similar semisolid, colloidal suspension of particles.
Chiang and Carter refer to this as a"semisolid battery.""Simpler manufacturing process This approach greatly simplifies manufacturing,
and also makes batteries that are flexible and resistant to damage, says Chiang, who is senior author of a paper in the Journal of Power Sources analyzing the tradeoffs involved in choosing between solid
and flow-type batteries, depending on their particular applications and chemical components. This analysis demonstrates that
while a flow battery system is appropriate for battery chemistries with a low energy density (those that can only store a limited amount of energy for a given weight), for high-energy density devices such as lithium-ion batteries,
Bendable and foldable In addition to streamlining manufacturing enough to cut battery costs by half, Chiang says,
the new system produces a battery that is more flexible and resilient. While conventional lithium-ion batteries are composed of brittle electrodes that can crack under stress,
the new formulation produces battery cells that can be bent, folded or even penetrated by bullets without failing.
This should improve both safety and durability, he says. The company has made so far about 10
000 batteries on its prototype assembly lines, most of which are undergoing testing by three industrial partners, including an oil company in Thailand
By 2020, Chiang estimates that 24m will be able to produce batteries for less than $100 per kilowatt-hour of capacity.
"Viswanathan adds that 24m's new battery design"could do the same sort of disruption to lithium ion batteries manufacturing as
and is powered battery so it doesn't need an outlet. Beyond thermotherapy the applications are endless.
which act as tiny energy-generating batteries inside cells, and which, if faulty, can cause inherited conditions such as fatal heart problems, liver failure,
a temperature sensor, a camera, a coin battery charger and the AA battery charger shown above.
In their tests, they were able to operate the camera up to 17 feet away, the temperature sensor up to 20ft away and the battery chargers up to 28 feet away from their router.
The researchers hope that their technology will lead to battery-free sensors and mobile devices that are powered continuously by Wi-fi routers.
But chemical batteries hold far more energy. Supercapacitors combine useful qualities of both the fast charge/discharge of capacitors and high-energy capacity of batteries into one package.
LIG supercapacitors appear able to do all that with the added benefits of flexibility and scalability.
#Chemists one step closer to new generation of electric car battery Lithium sulphur (Li-S) batteries can theoretically power an electric car three times further than current lithium-ion batteries for the same weight at much
and brings the Li-S battery one step closer to reality, said Nazar, who also holds the Canada Research Chair in Solid State Energy Materials
Their discovery that nanosheets of manganese dioxide can maintain a rechargable sulphur cathode helps to overcome a primary hurdle to building a Li-S battery.
Nazar group is known best for their 2009 Nature Materials paper demonstrating the feasibility of a Li-S battery using nanomaterials.
Sulphur as a battery material is extremely abundant, relatively light, and very cheap. Unfortunately, the sulphur cathode exhausts itself after only a few cycles
BASF International Scientific Network for Electrochemistry and Batteries funded the research. The paper co-authors include Arnd Garsuch and Thomas Weiss of BASF n
In other cases, battery-operated radio sensors are used. But changing batteries in structures that have several windows can lead to a considerable maintenance expense.
Researchers from the Fraunhofer Institute for Microelectronic Circuits and Systems IMS in Duisburg therefore developed a pragmatic alternative:
#A Battery That Last Twice as Long A Solidenergy startup has developed a lithium-ion battery that stores far more energy.
Batteries are safe nonflammable and nonvolatile and can operate at elevated temperatures. It can be manufactured using existing Li-ion manufacturing facility leveraging mature infrastructure.
These stations also have 16 charging slots for the badge flat batteries. In Medsense HQ, individuals can track, for instance,
in-between battery and combustion engine systems, said Wankewycz. The HUS was launched this year to merge the energy systems coming from HES with UAV platforms built from the ground up.
#Semiliquid Battery Almost As good as its Lithium Ion Counterparts and Supercapacitators Developed by researchers at the University of Texas, Austin,
the new membrane-free semiliquid battery, consisting of a liquid ferrocene electrolyte, a liquid cathode and a solid lithium anode, exhibited encouraging early results,
A new semiliquid battery combines all that is best about its lithium ion counterparts and supercapacitators (pictured above) to bring us closer to the next generation of energy storage devices.
Findings of the study were published in a recent issue of the science journal Nano Letters. he greatest significance of our work is that we have designed a semiliquid battery based on a new chemistry,
and Assistant professor Guihua Yu. he battery shows excellent rate capability that can be charged fully or discharged almost within one minute
and reasonable energy density, representing a promising prototype liquid redox battery with both high energy density and power density for energy storage.
Combining the best elements of lithium ion batteries the most common power sources in consumer electronics with supercapacitators (a relatively new type of battery valued for its capacity to discharge energy in large bursts) has been one of the focal point of much recent
The new battery high power density (1400 W/L) and good energy density (40 Wh/L) put it in the uniquely favorable position of combining a power density that is as high as that of current supercapacitors with an energy density on par with those of state-of-the-art
though slightly lower than that of lithium-ion batteries. This combination is a real winner considering that the battery is designed mostly for use in hybrid electric vehicles and energy storage for renewable energy sources.
Yu and his team attribute the battery stellar performance in large part to its liquid electrode design. he ions can move through the liquid battery very rapidly compared to in a solid battery,
and the redox reactions in which the electrons are transferred between electrodes also occur at very high rates in this particular battery.
For comparison, the values used to measure these rates (the diffusion coefficient and the reaction constant) are orders of magnitude greater in the new battery than in most conventional flow batteries,
explained Lisa Zyga, reporting on the discovery for Phys. org. Before the new battery hits the shelves, researchers still have a lot of work ahead of them considering the lithium anode
which has to be made much safer than it currently is. As long as the electrolyte compatibility is resolved,
such as zinc and magnesium that could serve as the anode in a battery of this type. e also expect that other organometallic compounds with multi-valence-state metal centers (redox centers) may also function as the anode,
which eventually would make the battery fully liquid. t
#Scientists teach robot to learn new skills via trial and error Scientists at University of California, Berkeley have taught robots to learn.
#An origami battery that generates power from bacteria An engineer at Binghamton University has created a flexible, origami-style battery.
A battery that can create energy from a drop of bacteria-containing liquid is already a fantastic achievement,
bacteria-powered battery made from paper. Just like origami sculptures. This device is not a conventional battery we all know and use.
Scientists hope that these new batteries would eliminate such need. Seokheun Choi has envisioned a self-powered system in
which a paper-based battery would create enough energy to run the biosensor. Such sensors do not require a lot of power few microwatts would be enough.
This paper battery costs around 5 U s. dollar cents. Only 5 cents costing device that is so innovative that can produce power from dirty water would seem as science fiction some time ago,
Such simple and cost effective device could change how we look at batteries for variety of different sensors.
However, more research will have to be done until the origami battery will find its practical application. Source:
because batteries and fuel cells simply aren practical. The process developed at EBI can be used to selectively upgrade alkyl methyl ketones derived from sugarcane biomass into trimer condensates with better than 95-percent yields.
#New manufacturing approach slices lithium-ion battery cost in half An advanced manufacturing approach for lithium-ion batteries, developed by researchers at MIT and at a spinoff company called 24m,
says Yet-Ming Chiang, the Kyocera Professor of Ceramics at MIT and a cofounder of 24m (and previously a cofounder of battery company A123).
The existing process for manufacturing lithium-ion batteries, he says, has changed hardly in the two decades
In this so-called low battery, the electrodes are suspensions of tiny particles carried by a liquid
and pumped through various compartments of the battery. The new battery design is a hybrid between flow batteries and conventional solid ones:
In this version, while the electrode material does not flow, it is composed of a similar semisolid, colloidal suspension of particles.
Chiang and Carter refer to this as a emisolid battery. Simpler manufacturing process This approach greatly simplifies manufacturing,
and also makes batteries that are flexible and resistant to damage, says Chiang, who is senior author of a paper in the Journal of Power Sources analyzing the tradeoffs involved in choosing between solid
and flow-type batteries, depending on their particular applications and chemical components. This analysis demonstrates that
while a flow battery system is appropriate for battery chemistries with a low energy density (those that can only store a limited amount of energy for a given weight),
for high-energy density devices such as lithium-ion batteries, the extra complexity and components of a flow system would add unnecessary extra cost.
Bendable and foldable In addition to streamlining manufacturing enough to cut battery costs by half, Chiang says,
the new system produces a battery that is more flexible and resilient. While conventional lithium-ion batteries are composed of brittle electrodes that can crack under stress,
the new formulation produces battery cells that can be bent, folded or even penetrated by bullets without failing.
This should improve both safety and durability, he says. The company has made so far about 10,000 batteries on its prototype assembly lines, most
of which are undergoing testing by three industrial partners, including an oil company in Thailand and Japanese heavy-equipment manufacturer IHI Corp. The process has received eight patents
By 2020, Chiang estimates that 24m will be able to produce batteries for less than $100 per kilowatt-hour of capacity.
Viswanathan adds that 24m new battery design ould do the same sort of disruption to lithium ion batteries manufacturing as
keeping their batteries charged. A group of researchers at KAIST has developed a wireless-power transfer (WPT) technology that allows mobile devices to be charged at any location and in any direction,
which currently dominate the battery-run electronics market. Lithium air batteries are especially promising for the electric car industry,
Batteries consist of one electrode on either side an anode and a cathode and an electrolyte between them.
and a solvent to dissolve the salt. he electrolytes used in batteries are just like Gatorade electrolytes,
because it comes at the cost of being able to recharge the battery, cautioned Viswanathan,
while water increased the battery capacity, it also catalyzed additional parasitic reactions, which prevented the batteries from being recharged.
Viswanathan, Mccloskey and their colleagues Mechanical engineering Ph d. Student Vikram Pande, Abhishek Khetan, a visiting Ph d. student,
The paper, titled nhancing Electrochemical Intermediate Solvation through Electrolyte Anion Selection to Increase Nonaqueous Li-O2 Battery Capacity, explains that salts are the key not solvents
we increased the battery capacity by triggering the so-called solution process without compromising on rechargeability.
the methods the researchers have developed will also be very impactful in other areas of battery research. his research is going to be very important for another big battery technology,
or insoluble is really important for most new battery ideas that are out there. ource:
At its most basic level, your smart phone battery is powering billions of transistors using electrons to flip on and off billions of times per second.
One of crucial next steps is to achieve the similar white lasers under the drive of a battery.
and feeding that power back to the phone battery. Zell is the CEO of Nikola Labs,
it can intermittently send power right to the battery. Moore Law, which predicts that the number of transistors on a chip doubles every two years,
and higher-resolution cameras, it can still be a challenge to get the battery that powering all these features to last throughout the day.
so you can keep using your phone for battery-intensive things like looking at websites,
A connection to the gadget battery would enable the layer to send power directly to it.
Illinois. The device contains a battery you fill up by moving around. ee pretty active people,
or cycling, generating electricity that stored in an internal battery (users have to connect their phone to Ampy to siphon off its juice).
The battery inside Ampy can store enough power to fully recharge a smartphone. It might take a
and the battery circulates that thermal energy into a heat exchanger to keep milk chilled over the course of the day.
though he then said that this might only happen by swapping in another battery at some point (Project Ara aims to let users do this without needing to turn off the phone).
Eremenko said in April last year that the bill of materials for a basic Ara handset complete with display, Wi-fi, battery,
how smaller batteries give more power to UK solar households When Elon musk, the chief executive of Tesla, took to the stage in California in April to launch a solar battery for the home,
The similarity lies in the product the Powervault battery which stores energy from domestic solar panels. ome people, especially if they don have solar panels,
just assume solar panels come with a battery, says Joe Warren, Powervault managing director. They don. Home energy generation has blossomed in the UK over the past four years,
Inside are batteries, chargers and electronics. A charger takes the energy from the solar panels and transforms it into energy
which is stored then in the batteries and discharged around the home when needed. Powervault energy storage system is just a little smaller than the average UK washing machine. ypically the system works on a daily cycle
it will charge the batteries until they are full and if it notices that you are importing electricity,
and reduce the amount of energy being imported from the grid by offsetting that with the energy in the battery.
If you made the battery bigger, you could store the energy for longer but the problem with that is it would cost a lot more.
Elon musk, of Tesla, at a glitzy launch to unveil the Powerwall home battery in April.
Tesla wall-mounted Powerwall batteries are designed to store up to 10kw hours of wind or solar energy;
It aims to have its batteries in the UK by the end of this year.
Last month, Mercedes-benz also entered the battery market for home and business use. Eco-entrepreneur Dale Vince, chair of the renewable energy firm Ecotricity,
said the home battery market remained undeveloped until now because energy had been oo cheap for too long for it to matter Ecotricity is also developing a product expected to be launched next year with a working title of lack box a 2ft to 3ft-high device that will control power coming in and out of the home.
#At the limit of Moore's law: scientists develop molecule-sized transistors Scientists have created a transistor made up of a single molecule.
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