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Batteries


Ultrathin device harvests electricity from human motion

Fri, 21 Jul 2017 13:19:49 EDT

A new electrochemical energy harvesting device can generate electrical current from the full range of human motions and is thin enough to embed in clothing.
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Scanning the surface of lithium titanate

Fri, 21 Jul 2017 10:55:36 EDT

Researchers have applied advanced scanning methods to visualize the previously unexplored surface of a superconductor: lithium titanate.
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Molecular 'pulleys' improve battery performance

Thu, 20 Jul 2017 14:23:14 EDT

Scientists have reported a molecular pulley binder for high-capacity silicon anodes of lithium ion batteries.
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Folding robots: No battery, no wire, no problem

Wed, 19 Jul 2017 14:09:45 EDT

Folding robots based on origami have emerged as an exciting new frontier of robotic design, but generally require onboard batteries or a wired connection to a power source, limiting their functionality. Scientist have now created battery-free folding robots that are capable of complex, repeatable movements powered and controlled through a wireless magnetic field.
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Smart toys without the batteries

Wed, 19 Jul 2017 11:33:45 EDT

A challenge in entertaining young children is keeping their toys powered up. Now, one group reports that they are one step closer to battery-free interactive games.
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Fast, cheap method to make supercapacitor electrodes

Mon, 17 Jul 2017 16:00:39 EDT

Researchers have developed a fast, inexpensive method to make electrodes for supercapacitors, with applications in electric cars, wireless telecommunications and high-powered lasers.
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New route to improving rechargeable lithium batteries?

Thu, 13 Jul 2017 15:48:41 EDT

In a study that suggests a route to improving rechargeable lithium batteries, researchers report that smooth surfaces may prevent harmful deposits from working their way into a solid electrolyte.
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Building a safer lithium-ion battery

Wed, 12 Jul 2017 08:49:51 EDT

Lithium-ion batteries have become an indispensable power source for our proliferating gadgets. They have also, on occasion, been known to catch fire. To yield insight into what goes wrong when batteries fail and how to address the safety hazard, scientists report that they have found a potential way to track lithium ions as they travel in a battery.
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Clean water that's 'just right' with new sensor solution

Tue, 11 Jul 2017 12:58:00 EDT

Scientists combined basic research on an interesting form of carbon with a unique microsensor to make an easy-to-use, table-top tool that quickly and cheaply detects disinfection byproducts in our drinking water before it reaches consumers.
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In the fast lane: Conductive electrodes are key to fast-charging batteries

Mon, 10 Jul 2017 11:37:28 EDT

Can you imagine fully charging your cell phone in just a few seconds? Researchers can, and they took a big step toward making it a reality with their recent work unveiling of a new battery electrode design.
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New way to predict when electric cars and home batteries become cost effective

Mon, 10 Jul 2017 11:36:42 EDT

The future cost of energy storage technologies can now be predicted under different scenarios, thanks to a new tool created by researchers.
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New material may help cut battery costs for electric cars, cellphones

Thu, 06 Jul 2017 14:31:56 EDT

In the battle of the batteries, lithium-ion technology is the reigning champion, powering that cellphone in your pocket as well as an increasing number of electric vehicles on the road. But a novel manganese and sodium-ion-based material might become a contender, offering a potentially lower-cost, more ecofriendly option to fuel next-generation devices and electric cars.
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First hot plasma edge in a fusion facility demonstrated

Wed, 05 Jul 2017 18:28:32 EDT

Two major issues confronting magnetic-confinement fusion energy are enabling the walls of devices that house fusion reactions to survive bombardment by energetic particles, and improving confinement of the plasma required for the reactions. Researchers have now found that coating tokamak walls with lithium-- a light, silvery metal-- can lead to progress on both fronts.
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First battery-free cellphone makes calls by harvesting ambient power

Wed, 05 Jul 2017 16:44:53 EDT

Engineers have designed the first battery-free cellphone that can send and receive calls using only a few microwatts of power, which it harvests from ambient radio signals or light. It's a major step forward in moving beyond chargers, cords and dying phones.
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'Near-zero-power' temperature sensor could make wearables, smart devices less power-hungry

Wed, 05 Jul 2017 10:40:59 EDT

Electrical engineers have developed a temperature sensor that runs on only 113 picowatts of power -- 628 times lower power than the state of the art and about 10 billion times smaller than a watt. This near-zero-power temperature sensor could extend the battery life of wearable or implantable devices that monitor body temperature, smart home monitoring systems, Internet of Things devices and environmental monitoring systems.
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Piling on pressure solves enduring mystery about metal's makeup

Thu, 22 Jun 2017 14:31:11 EDT

Extreme pressure experiments and powerful supercomputing have enabled scientists to solve a decades-old puzzle about the fundamental properties of the widely used metal lithium.
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Inexpensive organic material gives safe batteries a longer life

Mon, 19 Jun 2017 13:40:50 EDT

Modern batteries power everything from cars to cell phones, but they are far from perfect -- they catch fire, they perform poorly in cold weather and they have relatively short lifecycles, among other issues. Now researchers have described a new class of material that addresses many of those concerns in a new article.
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Reducing environmental impact of idling buses and delivery trucks

Fri, 16 Jun 2017 08:37:08 EDT

Researchers have developed a system for service vehicles that could reduce emissions and save companies and governments millions of dollars per year in fuel costs.
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Electrolytes made from liquefied gas enable batteries to run at ultra-low temperatures

Thu, 15 Jun 2017 14:27:36 EDT

Engineers have developed new electrolytes that enable lithium batteries to run at temperatures as low as -60 degrees Celsius with excellent performance -- in comparison, today's lithium-ion batteries stop working at -20 degrees Celsius. The new electrolytes also enable electrochemical capacitors to run as cold as -80 degrees Celsius -- their current limit is -40 degrees Celsius.
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Clean energy stored in electric vehicles to power buildings

Wed, 14 Jun 2017 12:04:27 EDT

Stored energy from electric vehicles (EVs) can be used to power large buildings – creating new possibilities for the future of smart, renewable energy - thanks to ground-breaking battery research.
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Clean energy stored in electric vehicles to power buildings

Wed, 14 Jun 2017 11:29:24 EDT

Stored energy from electric vehicles (EVs) can be used to power large buildings -- creating new possibilities for the future of smart, renewable energy.
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Seaweed derivative could be just what lithium-sulfur batteries need

Tue, 13 Jun 2017 14:52:00 EDT

Lithium-sulfur batteries have great potential as a low-cost, high-energy, energy source for both vehicle and grid applications. However, they suffer from significant capacity fading. Now scientists have made a surprising discovery that could fix this problem.
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Batteries from scrap metal

Fri, 09 Jun 2017 12:03:56 EDT

Scientists have made good use of waste while finding an innovative solution to a technical problem by transforming rusty stainless steel mesh into electrodes with outstanding electrochemical properties that make them ideal for potassium-ion batteries.
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200 years of the bicycle: Computer scientists electrify historic “dandy horse”

Wed, 07 Jun 2017 08:57:34 EDT

Small children still use a form of the so-called dandy horse, balance bike or draisine, which the inventor Karl von Drais first tested on a longer route on June 12, 1817. Now, about 200 years later, computer scientists are making the forerunner of the bicycle attractive for adults as well.
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Seeing the forest and the trees to find parasitic reactions in batteries

Tue, 06 Jun 2017 09:09:38 EDT

A detailed view of the atomic scale and mesoscale changes in a troubling layer offers insights for a better battery.
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Battery-less pacemaker: Researchers test microwave-powered device

Mon, 05 Jun 2017 15:19:38 EDT

A new battery-less pacemaker can be implanted directly into a patient's heart.
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'Instantly rechargeable' battery could change the future of electric and hybrid automobiles

Thu, 01 Jun 2017 15:18:13 EDT

New technology could provide an 'instantly rechargeable' method that is safe, affordable and environmentally friendly for recharging electric and hybrid vehicle batteries through a quick and easy process similar to refueling a car at a gas station.
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Exploring the relationship between the two-body and the collective

Tue, 30 May 2017 12:19:32 EDT

New approach accurately determines how electrolytes in water behave, offering insights for energy, synthesis, and medicine.
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Printed, flexible and rechargeable battery can power wearable sensors

Wed, 24 May 2017 15:26:44 EDT

Nanoengineers have developed the first printed battery that is flexible, stretchable and rechargeable. The zinc batteries could be used to power everything from wearable sensors to solar cells and other kinds of electronics.
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Nanoalloys ten times as effective as pure platinum in fuel cells

Wed, 24 May 2017 14:07:31 EDT

A new type of nanocatalyst can result in the long-awaited commercial breakthrough for fuel cell cars. Research results show that it is possible to significantly reduce the need for platinum, a precious and rare metal, by creating a nanoalloy using a new production technique. The technology is also well suited for mass production.
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