Safety has also come into question, as some of the lithium-ion batteries — widely believed to be the key to making viable electric cars — have shown a tendency to overheat and sometimes catch fire.

电动车的安全性也受到质疑，被普遍视为电动轿车商业化关键部件的锂离子电池有时可能出现过热甚至起火的现象。

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He said that the bacteria should be less dangerous than those used in current lithium-ion batteries because they produce less heat, which reduces the chance of them catching fire.

这种可以附着在任何材料上的细菌电池能在室温下甚至在水里正常工作。与目前使用的锂离子电池相比，它们的危害性更低，因为发热少从而降低了着火的可能性。

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In February 2016, the US National Transportation Safety Board issued a warning about lithium batteries in aeroplane cargo, describing them as "a fire and explosion ignition source".

2016年2月，美国国家运输安全委员会发布了一条关于飞机货物中锂离子电池的警告，将其描述为“引发火灾和爆炸的来源”。

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Boeing's plan to redesign the 787's fire-prone lithium-ion batteries wins approval from the Federal Aviation Administration.

NPR: 10 Things To Know For Wednesday

He said the nature of lithium ion batteries means no fire extinguisher system will stop them from burning once they start.

NPR: Boeing Defends Dreamliner, Safety Questions Remain

Investigators in Washington have taken X-rays and CT scans of the lithium-ion battery that caught fire in Boston, the safety board said.

CNN: Quick fix for Dreamliner looks less likely, experts say