锂电池充电缩短为10分钟 美石墨烯电极制造技术成功

美国普林斯顿大学(Princeton University)的研究人员指出，若是采用石墨烯(graphene)电极，锂电池的充电时间将能从2小时缩短到只要10分钟。

这种新开发的石墨烯电极制造技术，是由美国能源部所属的西北太平洋国家实验室(PNNL)与普林斯顿大学的研究员Ilhan Aksay所共同开发，并且已经授权给厂商Vorbeck Materials，准备推向商业化。PNNL表示，该实验室已经证实超薄石墨烯薄片能组装到锂离子电池的电极，并能大幅缩短充电所需时间。

目前Vorbeck正在开发商业化制程，希望能复制PNNL在实验室的成果；该公司并将其石墨烯电极材料命名为“Vor-x”。Vorbeck还另外开发了一种名为“Vor-ink”的石墨烯导电墨水，也是采用授权自普林斯顿大学的技术；该种墨水是供应印刷电子组件使用。

一位PNNL研究员正在准备测试电动车与其他行动应用的锂离子电池
(来源：PNNL)

通过使用新的Vor-x材料，研究人员也希望能在不减缓充电速度的前提下，进一步扩充锂离子电池的储存电量──打破传统锂离子电池技术会有储存电量与充电速度无法两全的难题。

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Graphene batteries said to recharge in 10 minutes

by R. Colin Johnson

Graphene electrodes used in lithium-ion batteries could reduce recharge times from two hours to about 10 minutes, according to government and Princeton University researchers.

The new graphene-based electrode fabrication process, also developed by researchers at the Energy Department's Pacific Northwest National Laboratory (PNNL), has been licensed to Vorbeck Materials Corp. (Jessup, Md.) for commercialization.

The graphene process was developed at PNNL in cooperation with Princeton researcher Ilhan Aksay under a cooperative research and development agreement with Vorbeck. PNNL said it has demonstrated that ultra-thin sheets of grahene can be fabricated on lithium-ion battery electrodes to yeild vastly shorter recharge times.

Vorbeck is developing a commercial process that duplicates PNNL's success in the lab; it has branded its graphene electrode material "Vor-x". Vorbeck separately developed "Vor-ink"--a graphene-based conductive ink licensed from Princeton University that allows electronic circuits to be printed.

Using the new Vor-x material, researchers also hope to increase the storage capacity of lithium-ion batteries without slowing their recharge time--a traditional trade-off with conventional lithium-ion battery technology.