#Medical marijuana Sparks New Technology The emerging cannabis industry has created not only thousands of new jobs, it has also given birth to a new technology niche.
but also carry electronics, sensors and batteries.""This would be an extremely difficult task, since the weight of the body has to be really lightweight for it to jump on water,
#Flexible, fast-charging aluminum-ion battery offers safer alternative to lithium-ion Researchers at Stanford university have created a fast-charging and long-lasting rechargeable battery that is inexpensive to produce,
and alkaline batteries powering our gadgets today. The prototype aluminum-ion battery is also safer,
not bursting into flames as some of its lithium-ion brethren are wont to do. The prototype battery features an anode made of aluminum, a cathode of graphite and an ionic liquid electrolyte,
all packed within a flexible, polymer-coated pouch. And unlike lithium-ion batteries which can short circuit
and explode or catch fire when punctured, the aluminum-ion battery will actually continue working for a short
while before not bursting into flames.""The electrolyte is basically a salt that's liquid at room temperature,
The aluminum-ion battery hits the target here, too, with the Stanford team claiming"unprecedented charging times"of just one minute for recharging the prototype battery.
The aluminum-ion battery has covered you there, too. Unlike typical lithium-ion batteries that last around 1, 000 charge-discharge cycles,
or other aluminum-ion battery lab attempts that usually died after just 100 cycles, the Stanford researchers claim their battery stood up to 7, 500 cycles without a loss of capacity.
This would make it attractive for storing renewable energy on the electrical grid.""The grid needs a battery with a long cycle life that can rapidly store
and release energy, "team member Hongjie Dai explains.""Our latest unpublished data suggest that an aluminum battery can be recharged tens of thousands of times.
It's hard to imagine building a huge lithium-ion battery for grid storage.""The experimental battery also has added the advantage of flexibility,
which gives the technology the potential to find applications in the burgeoning field of flexible electronics.
Furthermore, the researchers point out that aluminum is a cheaper metal than lithium, and the aluminum-ion technology offers an environmentally friendly alternative to disposable AA
and AAA alkaline batteries used to power millions of portable devices. Currently, one of the prototype battery's biggest shortcomings is its voltage.
Although Dai points out it is more than anyone else has achieved with aluminum, the battery only generates around two volts of electricity,
which is around half that of a typical lithium-ion battery. However, the researchers are confident they can improve on this."
"Improving the cathode material could eventually increase the voltage and energy density,"says Dai.""Otherwise, our battery has everything else you'd dream that a battery should have:
inexpensive electrodes, good safety, high-speed charging, flexibility and long cycle life. I see this as a new battery in its early days.
It's quite exciting.""The team's work is detailed in a paper published in the online edition of Nature
and the battery can be seen in action in the video below. Source: Stanford Universit t
#"Smart"facade keeps offices from overheating, without using any electricity Office buildings with plate glass windows may provide a nice view for workers,
#Aluminum"yolk"nanoparticles deliver high-capacity battery recipe Researchers at MIT and Tsinghua University in China have found a way to more than triple the capacity of the anodes,
or negative electrodes, of lithium-ion batteries while also extending their lifetime and potentially allowing for faster battery charging
and discharging. The new electrode, which makes use of aluminum/titanium"yolk -and-shell"nanoparticles, is reportedly simple to manufacture
The lithium-ion batteries in our phones, tablets and laptops store their energy-carrying ions inside negative electrodes made of graphite.
but only if the battery is charged at a slow rate, which is rarely practical. Many of the high-capacity alternatives also tend to expand
storing and releasing ions without damaging the structure of the electrode and leading to much longer-lasting, high-capacity batteries.
However, it isn't usually considered a good choice for building lithium-ion batteries because the repeated expansion and shrinkage inside the electrode cause aluminium particles to shed their outer layer.
it could lead to batteries that are longer-lasting, more energy-dense and faster-charging than today's cells s
and therefore also carry relatively bulky batteries to power their transmitters. Though still in development, the engineers say their new system is superior to existing radio communications technologies in this field,
in turn, reduce battery requirements, leading to smaller and more efficient devices. In this way, not only could wearables
and monitors be made smaller with longer battery life, but it would also reduce the size of ingestible transmitters to something much easier to swallow."
because they are limited to using small batteries, said Jiwoong Park, a Ph d student in Mercier's lab. ith this magnetic field human body communication system,
Power is produced from a 250w brushless DC motor combined with a Lifepo4 36 V, 3. 4 Ah battery,
The scientists also believe that their theoretical research points towards using boron-doped graphene to improve such things as lithium-ion batteries by controlling generated gas levels for optimum efficiency y
#A Smartphone Case That Recharges Your Battery from Thin Air How many times a day do you scramble around looking for a power cord
A new smartphone case promises to top off your battery lifeut of thin air. The Harvest phone case grabs the power your phone wastes and puts it back into the battery.
About 90%of your phone power is spent pumping out radio waves just trying to keep its wireless connection even
The Harvest case is able to stretch your battery life by nearly a third. Nikola Labswill Zell explains in the video below how the phone case is able to turn radio waves into electricity.
or expensive batteries, to back it up. Innovus Power variable speed genset could solve those problems in one neat package,
is a system that should cost less and work better than diesel-backed generators or lots of battery storage for the microgrid market,
whether theye inverter-based renewable energy or battery storage systems, or traditional spinning generators. With the benefit of the Northern Power Systemspower converter
Unlike remote islands, diesel costs in mainland Australia are low enough to make a renewables-plus-batteries microgrid uneconomical
but not without a certain amount of energy storage in the form of expensive lithium-ion batteries. he Innovus genset is going to allow us to achieve a very high renewable penetration without a very large battery,
you could connect PV arrays and batteries on the DC bus. That, in turn, ould allow you to eliminate all those inverters,
One might argue that combining batteries with green power is a more environmentally friendly alternative,
But pure battery systems still have a hard time penciling out in all but the most expensive fossil fuel markets.
Even if batteries get to the point where the round trip is more cost-effective than burning fossil fuel, hat greatfor Innovus,
or a fuel cell, or some dispatchable power source beyond your storage. t
#Solarcity Has a New Plan to Make Distributed Energy an Integral Part of the Grid Solarcity has an idea for how to help California utilities tap their own customers as an integral part of their billion-dollar distribution grid plans:
or predict the response of lots of household batteries and smart thermostats to rising and falling prices.
At the same time, theye starting to experiment with tariffs for behind-the-meter batteries smart thermostats and plug-in EVS to help defer distribution grid investments Ted Ko, policy director at behind-the-meter battery startup Stem,
noted at a Thursday CPUC workshop that his company is installing 85 megawatts of storage under its Southern California Edison contract,
it could be solar with a little battery. In either case, it much cheaper than a transformer upgrade.
Solarcity is already selling Tesla behind-the-meter batteries with its solar systems, and has been testing their ability to work in concert as an aggregated grid resource.
we could put in batteries every day, and use them to shift load, he said. Connected water heaters and smart thermostats could be added too,
That slightly larger body will have a smaller battery than the iphone 6, according to previous leaks.
whether that will mean that the phone will have less battery life, however, since Apple has been rumoured to be adding new, more efficient components.
This is also a battery charger, which uses as a power the conventional room or outdoor plants.
What allows you to restore a dead battery in about 1. 5 hours. It seems science fiction,
#Concept the translucent battery, that charging from the sun A group of Japanese engineers at the University of Kogakuin developed translucent lithium-ion battery that can be recharged in the sun. Solar rays are converted into electricity, the fact
which will function as a large battery, and as a solar panel. When the battery fall into the sun rays,
it becomes slightly tinted: light transmission drops to 30%.%Discharge causes the growth of up to 60%light transmission.
These improved materials which have been used in batteries lithium iron phosphate positive electrode and lithium titanate negative.
According to the developers, now the battery can withstand 20 charge-discharge cycles. Development is the next step to the windows of the future, acting as solar panels.
Place an LED light and battery on special paper and draw a line with the marker to connect the light and battery.
compact rectangular box fitted with an antenna, a signal amplifier and a battery, which can be carried easily
It has a solar panel to charge the battery, to keep it working in places without electric power.
As well as potentially being able to produce hydrogen for fuel cells, the complex new material could also be used to turn carbon dioxide from the air into a carbon-based fuel,
After nearly four years of aggressive rehabilitation efforts, Pollock arrived at UCLA having already mastered the use of a battery-powered wearable bionic suit,
while batteries store power when there isn't enough sunlight. Additionally, when conditions in the container are just right,
It has a battery, a chiller that keeps the system from getting too hot, a 2-kilowatt laser and a"beam director"that points the laser light at the intended target.
However, batteries are too heavy and bulky to fit into such small gizmos. Instead, these inventions could be powered wirelessly using magnetic induction,
Whoever is controlling the anti-drone system can keep the UAV hovering at a distance until the machine runs out of battery life and crashes to the ground, according to a report by the BBC.
It has a battery life of about ten hours, of course depending on the reader speed. The developers also plan for the device to display text messages and other notifications,
#Transparent Batteries That Charge In The Sun A group of Japanese researchers have managed to improve the design of a transparent lithium-ion battery
The transparent battery was developed first by the researchers, led by Kogakuin University president and professor Mitsunobu Sato, back in 2013.
The electrolyte used for the battery positive electrode is made mostly from lithium iron phosphate, while the electrolytes used for the negative electrode include lithium titanate,
Those are all common ingredients used in Li-ion rechargeable batteries but the thickness of these electrodes are just 80 to 90 nanometers,
and makes these batteries almost completely transparent. But by changing the chemical makeup of the negative electrode,
the Japanese researchers have found a way to make these transparent batteries now recharge themselves in the presence of sunlight,
The group hopes the improved transparent batteries could one day be used to make smarter windows for buildings
one day your smartphone display might even serve as an additional battery, harvesting sunlight to charge the device whenever youe outside t
The patent does not mention batteries so these contacts have to constantly generate power. In the patent
and power of lithium-ion batteries One big problem faced by electrodes in rechargeable batteries, as they go through repeated cycles of charging
degrading the battery performance over time. Now a team of researchers at MIT and Tsinghua University in China has found a novel way around that problem:
and provide a dramatic boost in the battery capacity and power. The new findings, which use aluminum as the key material for the lithium-ion battery negative electrode,
or anode, are reported in the journal Nature Communications, in a paper by MIT professor Ju Li and six others.
Most present lithium-ion batteries the most widely used form of rechargeable batteries use anodes made of graphite, a form of carbon.
As a result, previous attempts to develop an aluminum electrode for lithium-ion batteries had failed.
hat separates the aluminum from the liquid electrolytebetween the battery two electrodes. The shell does not expand
For applications that require a high power-and energy density battery, he says, t probably the best anode material available.
There is much work in the battery field that uses omplicated synthesis with sophisticated facilities, Lou adds,
but such systems re unlikely to have impact for real batteries. Simple things make real impact in the battery field. e
#Narrowing the gap between synthetic and natural graphene Producing graphene in bulk is critical when it comes to the industrial exploitation of this exceptional two-dimensional material.
The working principle used in this case is similar to the concept of lithium-ion batteries. There are several possibilities to create
and consumption of energy. housands of charge-discharge cycles of lithium-ion batteries used in mobile phones, for instance,
This led us to the idea to exploit similar structures such as the lithium-ion batteries
When charging and discharging a lithium-ion accumulator, the ions migrate from one electrode to the other
The team of scientists around Dasgupta has produced now a lithium-ion accumulator, in which one electrode is made of maghemite, a ferromagnetic iron oxide(?
and discharging the accumulator, magnetization of maghemite can be controlled. Similar to conventional lithium-ion accumulators, this effect can be repeated.
In the experiments reported, the researchers reached a variation of magnetization by up to 30%.%In the long term, complete on
the majority of the required voltage between the composite photocathode and a platinum counter electrode of around 1. 8 volts is still coming from a battery.
#Flexible, biodegradable device can generate power from touch (video) Longstanding concerns about portable electronics include the devices'short battery life and their contribution to e waste.
We have fabricated also Li-ion batteries based on structurally resilient carbon nanotube-based electrodes that have survived thousands of flexing cycles.
and as hydrogen storage materials in next generation batteries
#Targeted drug delivery with these nanoparticles can make medicines more effective: Nanoparticles wrapped inside human platelet membranes serve as new vehicles for targeted drug delivery The research,
#Extending a battery's lifetime with heat: Researchers from California Institute of technology find that heat can break down the damaging branch-like structures that grow inside batteries,
which may possibly be used to extend battery lifetimes A battery cell consists of a positive and negative electrode,
called the cathode and anode. As the battery produces electrical current, electrons flow from the anode through a circuit outside the battery and back into the cathode.
Having lost the electrons that are generating the current, some of the atoms in the anode--an electrically conductive metal like lithium--become ions that then travel to the cathode,
moving through a conductive liquid medium called an electrolyte. Recharging the battery reverses the process,
and the ions travel back and stick onto the anode. But when they do, the ions don't attach evenly.
rendering the battery useless and dead. The current also heats up the dendrites, and because the electrolyte tends to be flammable,
Even if the dendrites don't short circuit the battery, they can break off from the anode entirely and float around in the electrolyte.
and the battery can't store as much energy.""Dendrites are hazardous and reduce the capacity of rechargeable batteries,
"said Asghar Aryanfar, a scientist at Caltech, who led the new study that's published this week on the cover of The Journal of Chemical Physics, from AIP Publishing.
Although the researchers looked at lithium batteries, which are among the most efficient kind, their results can be applied broadly."
"The dendrite problem is general to all rechargeable batteries, "he said. The researchers grew lithium dendrites on a test battery
and heated them over a couple days. They found that temperatures up to 55 degrees Celsius shortened the dendrites by as much as 36 percent.
And while many factors affect a battery's longevity at high temperatures--such as its tendency to discharge on its own
or the occurrence of other chemical reactions on the side--this new work shows that to revitalize a battery,
#Discovery about new battery overturns decades of false assumptions Abstract: New findings at Oregon State university have overturned a scientific dogma that stood for decades,
by showing that potassium can work with graphite in a potassium-ion battery-a discovery that could pose a challenge and sustainable alternative to the widely-used lithium-ion battery.
Lithium-ion batteries are ubiquitous in devices all over the world, ranging from cell phones to laptop computers and electric cars.
But there may soon be a new type of battery based on materials that are far more abundant and less costly.
A potassium-ion battery has been shown to be possible. And the last time this possibility was explored was
or other bulk carbon anodes in a battery,"said Xiulei (David) Ji, the lead author of the study and an assistant professor of chemistry in the College of Science at Oregon State university."
because they open some new alternatives to batteries that can work with well-established and inexpensive graphite as the anode,
The new findings show that it can work effectively with graphite or soft carbon in the anode of an electrochemical battery.
Right now, batteries based on this approach don't have performance that equals those of lithium-ion batteries,
"It's safe to say that the energy density of a potassium-ion battery may never exceed that of lithium-ion batteries,
"Electrical energy storage in batteries is essential not only for consumer products such as cell phones and computers,
and faster charging abilities compared to rechargeable batteries. Lightweight and high-power density capacitors are of particular interest for the development of hybrid and electric vehicles.
Platinum is used as a catalyst in fuel cells, in automobile converters and in the chemical industry because of its remarkable ability to facilitate a wide range of chemical reactions.
for example in polymer electrolyte membrane (PEM) fuel cells, which are the leading contenders for small-scale and mobile power generation not based on batteries or combustion engines.
The Tufts researchers discovered that dispersing individual, isolated platinum atoms in much less costly copper surfaces can create a highly effective
"Environmental Benefits Because platinum is at the center of many clean energy and green chemicals production technologies, such as fuel cells, catalytic converters,
In the early 2000s, Maria's group had pioneered the single-atom approach for metals anchored on oxide supports as the exclusive active sites for the water-gas shift reaction to upgrade hydrogen streams for fuel cell use.
#Silk could be new'green'material for next-generation batteries Lithium-ion batteries have enabled many of today electronics, from portable gadgets to electric cars.
But much to the frustration of consumers, none of these batteries last long without a recharge.
Now scientists report in the journal ACS Nano("Hierarchical Porous Nitrogen-Doped Carbon Nanosheets Derived from Silk for Ultrahigh-Capacity Battery Anodes and Supercapacitors")the development of a new,
reenway to boost the performance of these batteries with a material derived from silk. Chuanbao Cao and colleagues note that carbon is a key component in commercial Li-ion energy storage devices including batteries and supercapacitors.
Most commonly graphite fills that role, but it has limited a energy capacity. To improve the energy storage,
Their material stores five times more lithium than graphite can a capacity that is critical to improving battery performance.
The researchers successfully incorporated their material in prototype batteries and supercapacitors in a one-step method that could easily be scaled up,
The entire device is powered by a 3. 9-volt micro lithium battery and weighs 1 to 1. 5 grams."
#Energy-generating nanopatterened cloth could replace batteries From light up shoes to smart watches, wearable electronics are gaining traction among consumers,
short-lived batteries that are required. These limitations, however, could soon be overcome. In the journal ACS Nano("Nanopatterned Textile-Based Wearable Triboelectric Nanogenerator"),scientists report the first durable,
It can also self-charge batteries or supercapacitors without an external power source and make new commercial and medical applications possible.
#Putting batteries on stage spotlights performance at the nanoscale Used in everything from electric vehicles to laptop computers,
the lithium battery is ubiquitous, but it is understood not well at the atomic scale. To see what happens on the nanoscale,
Using this stage inside a state-of-the-art aberration-corrected transmission electron microscope they can take nanoscale-resolution pictures of lithium ions as they are deposited on or dissolve off of an electrode while the battery runs("Observation and Quantification of Nanoscale Processes in Lithium batteries
and descriptions of what happens inside the battery. This information is vital to control performance-and safety-limiting processes.
and electrolytes (see Battery 101). The new stage will help quickly sort through options for longer lasting, safer batteries.
Methodsmoving beyond the current industry-standard lithium-ion battery has been difficult. In lithium-air and other designs, interactions at the electrode-electrolyte interfaces affect the battery's performance and safety.
To understand the reactions, scientists at the Pacific Northwest National Laboratory, as part of JCESR, created an operando electrochemical stage.
Using it in an aberration-corrected scanning transmission electron microscope, scientists can now chemically image the interface between the platinum anode and the electrolyte during the battery operation.
The imaging method highlights solid lithium metal uniquely identifying it from the components that make up the protective solid electrolyte interphase layer.
This means they can view dendrites--the microscopic thorns that cause batteries to fail--as they form.
In their studies, the team found that extended battery cycling leads to lithium growing beneath the layer--the genesis of the dendrites that have implications for battery safety and performance.
This new imaging tool opens up possibilities to rapidly visualize and test electrode/electrolyte pairings for new battery systems.
meaning it could also be used to make electrodes in those types of batteries. Chemists from Brown University have come up with a way to make new nanomaterials from a silicon-based compound.
optics or batteries. Image: Koski lab/Brown University)" Silicon-based compounds are the backbone of modern electronics processing,
#New study shows bacteria can use magnetic nanoparticles to create a'natural battery'(Nanowerk News) New research shows bacteria can use tiny magnetic particles to effectively create a'natural battery.'
but we speculate that it might be possible for other non-iron metabolizing organisms to use magnetite as a battery as well
meaning that the battery was used over repeated day-night cycles. Whilst this work has been on iron-metabolizing bacteria,
it is thought that in the environment the potential for magnetite to act as a battery could extend to many other types of bacteria
It could lead to miniaturized, battery-powered devices for medical and materials imaging, contraband detection,
"This novel material significantly enhanced catalytic activity for the oxygen reduction reaction--the splitting of an O2 molecule into two oxygen ions--that is critical to fuel cells and potentially other electrochemical applications.
and tablets, our approach could have a huge impact on energy consumption and battery life, she noted. f you start with polarized light,
then the battery will last much longer because the display would only draw half as much power as conventional displays.
because it represents a new way of combining elemental materials to form the building blocks of energy storage technology--such as batteries, capacitors and supercapacitors,
"We see possible applications in thermoelectrics, batteries, catalysis, solar cells, electronic devices, structural composites and many other fields, enabling a new level of engineering on the atomic scale
But batteries usually put out power at a voltage level that makes the system operate inefficiently;
often, the battery puts out more voltage than the system needs. To change the voltage to the best level,
and as hydrogen storage materials in next generation batteries
#3d bone marrow made from silk biomaterials successfully generates platelets (Nanowerk News) Researchers funded by the National Institute of Biomedical Imaging
potentially enabling the replacement of expensive and rare metals in fuel cells. The new catalyst is based carbon,
which are crucial for enabling reactions in devices such as fuel cells or electrolyzers. Molecular electrocatalysts have the advantage of being relatively easy to tune by chemical treatment
which is he universal electrode materialin batteries and fuel cells, Surendranath says. By finding a way to make this material tunable in the same ways as molecular catalysts
In addition to their possible uses in fuel cells, such new catalysts could also be useful for enhancing chemical reactions,
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