Energy & Green Tech

A health monitoring wearable that operates without a battery

A new self-powered, wristwatch-style health monitor invented by researchers at the University of California, Irvine can keep track of a wearer's pulse and wirelessly communicate with a nearby smartphone or tablet—without ...

Energy & Green Tech

Lithium-ion battery fast charging: A review

Lithium-ion batteries currently power most portable electronic devices, electric vehicles and energy grid storage facilities. Researchers worldwide are working to improve the performance of these batteries.

Engineering

These energy-packed batteries work well in extreme cold and heat

Engineers at the University of California San Diego have developed lithium-ion batteries that perform well at freezing cold and scorching hot temperatures, while packing a lot of energy. The researchers accomplished this ...

Engineering

One step closer to fire-safe, recyclable lithium-metal batteries

To power our increasingly electrified society, energy storage technology must evolve and adapt to meet the growing demand. Lithium-ion batteries, already essential to myriad technology, will require dramatic improvements ...

Energy & Green Tech

A new approach leads to better sodium ion battery

Cheaper and far more abundant than lithium, sodium is increasingly appealing as a foundation for a next generation of high-voltage rechargeable batteries. Development of commercially viable sodium ion batteries lags significantly ...

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