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A study finds problems, but also offers software fixes that could help cell phones last significantly longer between charges.
Lithium-ion batteries with nanotube electrodes could go longer between charges.
The company will share parts and production lines between hybrids and conventional vehicles.
A British company is testing new chemistry that could boost the performance of batteries.
Digital quantum batteries could exceed lithium-ion performance by orders of magnitude.
ARPA-E’s new director explains how it is evolving.
A dip in nanotube ink turns ordinary office paper into a high-energy electrode.