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By measuring nanoscale forces, researchers learn to make lithium-ion batteries that pull themselves together.
Stretchable batteries that can be recharged wirelessly offer a power source for wearable electronics and health monitors.
As Congress prepares to vote on a comprehensive spending bill, U.S. energy projects such as ARPA-E hang in the balance.
An energy storage startup gets new government funding.
Silicon-nanotube electrodes may enable lithium-ion batteries to store 10 times more charge.
The simple, non-polluting battery could be used in compact devices.
New materials improve the reliability, safety, and storage capacity of lithium-ion batteries.
A new device offers a pixel layout that saves battery life and presents a sharper picture.