Lawrence Berkeley National Laboratory

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2014

Possible avenue to better electrolyte for lithium ion batteries

Researchers looking for a better understanding of liquid electrolyte may have found a pathway forward.

The world's most powerful thermoelectric generator

The world's most powerful thermoelectric generator, which captures exhaust heat and converts it into electricity.

Study sheds new light on why batteries go bad

A comprehensive look at how tiny particles in a lithium ion battery electrode behave shows that rapid-charging the battery and using it to do high-power, rapidly draining work may not be as damaging as researchers had thought - and that the benefits of slow draining and charging may have been overestimated.

How to make more efficient fuel cells

Fuel cells use oxygen and hydrogen as fuel to create electricity; if the process were run in reverse, the fuel cells could be used to store electricity, as well.

Creeping nanocrystals behind lithium-ion battery degradation

Batteries do not age gracefully. The lithium ions that power portable electronics cause lingering structural damage with each cycle of charge and discharge, making devices from smartphones to tablets tick toward zero faster and faster over time.

Smart Window material may make better batteries

High-tech "smart windows," which darken to filter out sunlight in response to electric current, function much like batteries. Now, X-ray studies provide a crystal-clear view into how the color-changing material in these windows behaves in a working battery - information that could benefit next-generation rechargeable batteries.

Promising news for solar fuels using bionic leaves

There's promising news from the front on efforts to produce fuels through artificial photosynthesis.

Big step for next-generation fuel cells and electrolyzers

A big step in the development of next-generation fuel cells and water-alkali electrolyzers has been achieved with the discovery of a new class of bimetallic nanocatalysts that are an order of magnitude higher in activity than the target set by the U.S. Department of Energy (DOE) for 2017.

Battery could find use in mobile applications

Researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have demonstrated in the laboratory a lithium-sulfur (Li/S) battery that has more than twice the specific energy of lithium-ion batteries, and that lasts for more than 1,500 cycles of charge-discharge with minimal decay of the battery's capacity. This is longest cycle life reported so far for any lithium-sulfur battery.

Researchers build nonflammable lithium ion battery

Developing a new generation lithium-ion battery that doesn't spontaneously combust at high temperatures.

Researchers build nonflammable lithium ion battery

Researchers have identified a surprising replacement for the only inherently flammable component of today's lithium-ion batteries: the electrolyte.

Engineers create light-activated 'curtains'

Forget remote-controlled curtains. A new development by researchers could lead to curtains and other materials that move in response to light, no batteries needed.

Highly sensitive tactile sensors for robotics and other applications

Researchers have created tactile sensors from composite films of carbon nanotubes and silver nanoparticles similar to the highly sensitive whiskers of cats and rats.

Scientists cook up new electronic material

Scientists grew sheets of an exotic material in a single atomic layer and measured its electronic structure for the first time.

New spectroscopic technique could accelerate push for better batteries

A new technique developed at Berkeley Lab's Advanced Light Source could help scientists better understand and improve the materials required for high-performance lithium-ion batteries that power EVs and other applications.

2013

Roots of the lithium battery problem

The lithium-ion batteries that power our laptops, smartphones and electric vehicles could have significantly higher energy density if their graphite anodes were to be replaced by lithium metal anodes.

New spectroscopic technique could accelerate push for better batteries

A new technique could help scientists better understand and improve the materials required for high-performance lithium-ion batteries that power EVs and other applications.

Exotic drops could lead to all-liquid battery

Through the combination of water, oil and nanoparticle surfactants plus an external field, researchers are able to stabilize water drops into non-equilibrium shapes that could find valuable uses as therapeutic delivery systems, biosensors, microfluidic lab-on-a-chip devices, or possibly as the basis for an all-liquid electrical battery.

Longest cycle life reported so far for any lithium-sulfur battery.

Researchers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have demonstrated in the laboratory a lithium-sulfur (Li/S) battery that has more than twice the specific energy of lithium-ion batteries and that lasts for more than 1,500 cycles of charge-discharge with minimal decay of the battery's capacity. This is longest cycle life reported so far for any lithium-sulfur battery.

Cure for crack-prone high-capacity batteries

Researchers have shown that mixing silicon microparticles with self-healing polymers helps prevent a longer-lasting battery from failing.