Lithium-ion batteries have two electrodes immersed in an electrically conductive solution, called an electrolyte.

锂离子电池有两个电极浸入在被称作电解质的导电溶液中。

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Scientists used two harmless viruses to create high-performance, rechargeable lithium-ion batteries that could power portable electronic devices like mobile phones or GPS systems for military uses.

由两种无害的病毒制造的高性能电池，可以为便携式电子设备如手机、GPS系统提供动力，此设备也可用于军事目的。

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Because of this flexibility, researchers hope to develop new electrode materials that can increase the energy density of lithium-ion batteries by a factor of two or more in the future.

因为具有这种弹性，研究者们期待能开发出新的电极材料，未来也许可以把锂离子电池的能量密度提高2倍或以上。

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"The power source for the aircraft are the two battery packs you see on either side, which are lithium ion batteries which are similar to what you find in our laptops, only custom made for us for this application."

VOA: standard.2010.08.11

Each 787 has two lithium ion batteries.

NPR: Poland's Boeing 787s To Resume Flight In June

The groundings of all Dreamliners in January followed two major incidents concerning the plane's two lithium-ion batteries.

BBC: Dreamliner: Boeing 'may never find battery fault cause'

Moreover, the two lithium-ion batteries on each Dreamliner are not considered flight-critical, since they mainly support ground operations.

FORBES: Boeing Completes Tests Leading To Resumption Of Dreamliner Operations