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These thin bilayer films are layered onto both sides of a piece of ordinary paper, which serves as both the structural support of the battery as well as the electrode separator.

这些很薄的双层薄膜放在普通纸张的两面，纸张既是电池的支撑结构，同时也起到分离电极的作用。

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Battery life is one of the big advantages of e-paper, which USES power only when a page is being turned.

电池续航能力是电子书的主要优点之一，因为只有在翻页时才会消耗电力。

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The team of Professor Keon Jae Lee from the Department of Materials Science and Engineering, KAIST has developed a high performance flexible all-solid-state battery, an essential energy source for flexible displays (see paper in Nano Letters: "Bendable Inorganic Thin-Film Battery for Fully Flexible Electronic Systems").

ENGADGET: Korean scientists solve flexible battery riddle (video)

Featuring electronic paper display, absolutely unique battery lifetime (up to 60 hours active) and patented USB hinge design.

ENGADGET: Russian YotaPhone promises dual 4.3-inch LCD and E Ink displays in Q3 of next year

That could result in local officials alternating use of battery-powered touch-screen machines with paper ballots.

WSJ: Sandy Prompts Shifts in Voting Procedures