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
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
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.
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,
The researchers grew lithium dendrites on a test battery and heated them over a couple days.
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,
which are the leading contenders for small-scale and mobile power generation not based on batteries or combustion engines.
#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,
The researchers successfully incorporated their material in prototype batteries and supercapacitors in a one-step method that could easily be scaled up,
#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,
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.
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,
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
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
#Discovery about new battery overturns decades of false assumptions 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."
"The Journal of the American Chemical Society published the findings from this discovery("Carbon Electrodes for K-Ion Batteries),
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,
theoretical work indicates that boron-doped graphene could lead to improved lithium-ion batteries and field-effect transistors, the authors report t
#New low-cost battery could help store renewable energy Wind and solar energy projects are growing at a respectable clip.
Now researchers are developing a new battery that could bring the price of storage to more affordable levels.
They report their new battery that uses low-cost materials sodium and magnesium in ACS journal Chemistry of Materials("Efficient and Inexpensive Sodiummagnesium Hybrid Battery".
"A hybrid intercalation battery based on a sodium/magnesium (Na/Mg) dual salt electrolyte, metallic magnesium anode,
ACS) Today, lithium-ion batteries are the storage technology of choice for many applications, from electric cars to smartphones.
The researchers started with magnesium as the batterys safe inexpensive and high-energy density anode material and paired it with pyrite,
Testing showed that the resulting devices energy density was close to that of lithium-ion batteries. It could get an additional two-to threefold boost with further development of magnesium electrolytes.
the researchers unveil how one of a battery of chemical warfare agents used by the immune system to fight off infection can itself create DNA mutations that lead to cancer.
The new approach combines a battery-powered wearable bionic suit that enables people to move their legs in a step-like fashion,
A protein embedded in the surface of mitochondria the energy-producing batteries of living cells opens the door to cell death,
battery and display technology are all going to receive big overhauls. What likely to be includedthe big advancement with the iphone 6s we are likely to see is Force Touch screen technology reports Business Insider.
#Aluminum-Ion Batteries Are Flexible, Fast-Charging, And Won't Catch on Fire Almost all of the electronic devices that we carry around with us all day now rely on one key,
the lithium-ion battery. A mainstay of rechargeable power for the last couple decades, this battery technology has gotten only minor refinements.
This isn't the first time that aluminum-based batteries have been investigated. The material has a number of advantages over lithium:
you can even drill a hole through the battery and it will continue to work.
compromise a lithium-ion battery and you'll likely see some sparks or flame, but the materials in this new battery are all non-reactive.
And, aluminum is cheaper than lithium, too. All good things, so why haven't we seen more aluminum batteries?
The catch to date has been finding another material to work with aluminum in creating energy. The Stanford team ended up using our old friend graphene to play the cathode to aluminum's anode.
000 you'd likely get out of a Li-ion battery--aluminum-ion's woes aren't all behind it.
The voltage provided by an aluminum-ion battery is only about half of that what you'd get from a lithium-ion cell.
the overall power density--the amount of juice you can store in a battery vis-a-vis its size--more closely resembles the large lead-acid battery you'd find in your car.
So aluminum-ion batteries still aren't quite ready for primetime, but you can bet that electronics manufacturers, makers of electric cars,
Meanwhile, researchers are working to enhance the performance of lithium-ion batteries using materials like carbon nanotubes,
Should scientists be able to increase the power and energy density of aluminum-ion batteries its speed of charging, lack of volatility,
#A 3d printed, Battery-Powered Rocket engine Nothing demonstrates engineering prowess and technical knowhow quite like rocket science.
Today at the Space Symposium in Colorado, the company unveiled its brand-new engine, named Rutherford--the first-ever battery-powered rocket engine.
Instead of running on liquid propellant, the pumps are powered by electric motors with lithium polymer batteries. This eliminates the need for extra spaghetti tubes and valves,
The battery (which lasts 4-6 hours) sits above the top of the lenses, giving the 4. 5-ounce glasses a bulky look.
The group came up with a method that uses solar panels to charge a bank of batteries.
The batteries then power a system that removes salt from the water through electrodialysis. On the most basic level, that means that dissolved salt particles,
Advances in cellular technology, like miniaturized powerful batteries, cheaper smaller cameras, and sensors like accelerometers have all found their way from our pockets to the skies.
The liquid metal could be used to build self contained pumps that don't require outside power or batteries, saving on weight and complexity for items like night vision and laser cooling pumps.
but powering sensors--even really efficient sensors--requires some form of electric charging or battery replacement.
replacing batteries isn always the easiest task for humans, so that might be a future job for drones.
The 160-pound robot is powered battery and remotely controlled, with the operator as far as 1, 600 feet away.
and battery that should last up to two days, and recharges using a micro USB cable.
#New design points a path to the ltimatebattery Scientists have developed a working laboratory demonstrator of a lithium-oxygen battery
or lithium-air, batteries have been touted as the'ultimate'battery due to their theoretical energy density, which is ten times that of a lithium-ion battery.
Such a high energy density would be comparable to that of gasoline -and would enable an electric car with a battery that is a fifth the cost and a fifth the weight of those currently on the market to drive from London to Edinburgh on a single charge.
However, as is the case with other next-generation batteries, there are several practical challenges that need to be addressed before lithium-air batteries become a viable alternative to gasoline.
Now, researchers from the Univ. of Cambridge have demonstrated how some of these obstacles may be developed overcome,
and a lab-based demonstrator of a lithium-oxygen battery which has increased higher capacity energy efficiency and improved stability over previous attempts.
Their demonstrator relies on a highly porous, 'fluffy'carbon electrode made from graphene (comprising one-atom-thick sheets of carbon atoms),
and additives that alter the chemical reactions at work in the battery, making it more stable and more efficient.
the researchers caution that a practical lithium-air battery still remains at least a decade away."
Many of the technologies we use every day have been getting smaller, faster and cheaper each yearith the notable exception of batteries.
the challenges associated with making a better battery are holding back the widespread adoption of two major clean technologies:
"In their simplest form, batteries are made of three components: a positive electrode, a negative electrode and an electrolyte,''said Dr. Tao Liu, also from the Dept. of Chemistry,
In the lithium-ion (Li-ion) batteries we use in our laptops and smartphones, the negative electrode is made of graphite (a form of carbon),
The action of the battery depends on the movement of lithium ions between the electrodes. Li-ion batteries are light
but their capacity deteriorates with age, and their relatively low energy densities mean that they need to be recharged frequently.
Over the past decade, researchers have been developing various alternatives to Li-ion batteries, and lithium-air batteries are considered the ultimate in next-generation energy storage, because of their extremely high energy density.
However, previous attempts at working demonstrators have had low efficiency, poor rate performance, unwanted chemical reactions, and can only be cycled in pure oxygen.
What Liu, Grey and their colleagues have developed uses a very different chemistry than earlier attempts at a non-aqueous lithium-air battery
With the addition of water and the use of lithium iodide as a'mediator',their battery showed far less of the chemical reactions
A small voltage gap equals a more efficient batteryrevious versions of a lithium-air battery have managed only to get the gap down to 0. 5 to 1. 0 V
whereas 0. 2 V is closer to that of a Li-ion battery, and equates to an energy efficiency of 93%.
which can cause batteries to explode if they grow too much and short-circuit the battery. Additionally, the demonstrator can only be cycled in pure oxygen,
while the air around us also contains carbon dioxide, nitrogen and moisture, all of which are generally harmful to the metal electrode."
According to Auyeung, thermochemical storage resembles a battery, in which chemical bonds are used to store and release energyut in this case,
#New solar battery outperforms conventional lithium-iodine batteries By combining a solar cell and a battery into a single device,
Not only can this battery compete with regular lithium-iodine batteries, it can actually outperform them,
which is harvested by a flat solar panel on top of the battery. Below, the researchers have installed a new type of electrolyte that replaces the lithium-cobalt oxide or lithium iron phosphate of regular battery electrolytes with water."
"The truly important innovation here is that we've successfully demonstrated aqueous flow inside our solar battery,"one of the team,
"The team is the same one that debuted the world first solar air battery last year,
this world-first design could be the basis of an entirely new class of batteries,
When they tested their solar batteries against conventional lithium-iodine batteries, they charged and discharged them 25 times to see how much electricity they would discharge each round.
Each time, both batteries discharged around 3. 3 volts. But as Lavars reports at Gizmag while the typical battery needed to be charged to 3. 6 volts to discharge 3. 3 volts,
the solar battery only needed to be charged to 2. 9 volts, while the solar panel made up the other 20 percent.
which would make it a fully solar-chargeable battery. But as they are, these solar batteries are already looking pretty damn practical."
The tests come after a feasibility study looking into how dynamic battery charging could solve the problem of electric vehicles running out of juice,
#This transparent lithium-ion battery charges itself with sunlight Researchers in Japan have invented a rechargeable lithium-ion battery that can charge itself using sunlight-no solar cell required.
Theye since been working towards a battery-integrated window that can store energy from sunlight while also changing its structure automatically to provide a tint during the day.
when the battery is exposed to sunlight, it becomes tinted to about 30 percent light transmittance,
Back in 2013, the main component of the electrolyte for the battery's positive electrode was lithium iron phosphate,
of which are used commonly in rechargeable lithium-ion batteries. For the prototype that was put on display in Tokyo last month,
the team reports an output from the battery of 3. 6 volts, and say they managed to successfully complete 20 charge/discharge cycles.
another possibility for the technology is self-charging smartphone screens made from transparent lithium-ion batteries.
when a US ARMY vet used the battery-powered prosthetic to scale a rock-climbing wall, using nothing but his brain power.
Now the team behind the technology has demonstrated how the battery-powered device can impart the feeling of touch on top of grip, movement,
and as hydrogen storage materials in next generation batteries,"he added. Last year, scientists used metallic glass to create an iphone case that was 50 times harder than plastic.
#Researchers create lithium-air battery that could be 10x more powerful than lithium-ion A new lithium-air battery created by researchers at the University of Cambridge points the way to the ultimate battery packs of the future,
the new test battery could prove an important stepping stone in the development of this essential technology.
Any new battery has to improve on what we already have, be safe to use in consumer gadgets,
and that's why many'miracle'batteries have fallen since by the wayside once the initial lab work is done,
not just for smartphones but for electric cars and solar power, where batteries are essential for storing energy to use
The idea of a lithium-air or lithium-oxygen battery isn't new scientists have known for a while that these types of batteries can hold up to 10 times the charge of today's lithium-ion packs (imagine not having to charge your phone for a whole week.
The new battery from the Cambridge university lab has a higher capacity, better efficiency and improved stability compared with previous attempts this stability,
crucial if we're to put these batteries into millions of cars and smartphones, was reached by using a'fluffy'carbon electrode made from graphene.
What's more, by changing the chemical mix from earlier versions of lithium-air batteries,
the researchers were able to prevent the battery from degrading significantly over time.""What we've achieved is a significant advance for this technology
The demonstration battery produced by the scientists still needs pure oxygen in order to charge not something many of us have a ready supply of
and there's still the risk of the battery exploding due to the dendrites (spindly lithium metal fibres) created during the charging process.
#Researchers discover N-type polymer for fast organic battery The discovery relies upon a"conjugated redox polymer"design with a naphthalene-bithiophene polymer,
Yanliang Liang, a research associate at UH and first author on the paper, said researchers aren't trying to compete directly with conventional lithium-ion batteries."
Liang said conventional inorganic metal-based batteries and energy storage devices are expensive partly because the materials used to make them,
and see widespread applications, especially in energy-related ones such as batteries, supercapacitors and thermoelectrics.""The basic polymer used in the work was discovered in 2009;
allowing a battery to be charged 80 percent within 6 seconds and fully charged in another 18 seconds,
Conventional inorganic batteries still are capable of holding more energy than the organic battery, and Yao said work will continue to improve the storage capacity of the material.
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