only made landlines obsolete for many, but [the lithium-ion battery] put cameras and the internet into the hands of millions.” That huge leap didn’t happen overnight. “It was the sum of many incremental steps forward,
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, and decades of work,” says Crabtree, who coordinates battery research in dozens of U.S. labs.
Lithium-ion batteries have their limits,
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, however,
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, especially for use in the power grid and in electric vehicles. Fortunately, like their Energizer mascot, battery researchers never rest. Over the last 10 years, universities,
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, tech companies and car manufacturers have explored hundreds of new battery technologies,
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, reaching for an elusive and technically difficult goal: next-generation batteries that hold more energy,
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, last longer and are cheaper, safer and easier to recharge.
A decade of incremental steps are beginning to pay off. In late 2017, scientists will introduce a handful of prototype batteries to be developed by manufacturers for potential commercialization. Some contain new ingredients — sulfur and magnesium — that help store energy more efficiently, delivering power for longer periods. Others will employ new designs.
“These prototypes are proof-of-principle batteries, miniature working versions,
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,” Crabtree says. Getting the batteries into consumer hands will take five to 10 years. Making leaps in battery technology, he says,
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, is surprisingly hard to do.
Power struggle
Batteries operate like small chemical plants. Technically, a battery is a combination of two or more “electrochemical cells” in which energy

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