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0513flpb

至尊木虫 (职业作家)


[资源] 最新Nano Letters上有关石墨烯新型锂电池充电仅需一分钟的文章

Graphene Surface-Enabled Lithium Ion-Exchanging Cells:
Next-Generation High-Power Energy Storage Devices


ABSTRACT: Herein reported is a fundamentally new strategy for the design of
high-power and high energy-density devices. This approach is based on the
exchange of lithium ions between the surfaces (not the bulk) of two nanostructured
electrodes, completely obviating the need for lithium intercalation or
deintercalation. In both electrodes, massive graphene surfaces in direct contact
with liquid electrolyte are capable of rapidly and reversibly capturing lithium ions
through surface adsorption and/or surface redox reaction. These devices, based
on unoptimized materials and configuration, are already capable of storing an
energy density of 160 Wh/kgcell, which is 30 times higher than that (5Wh/kgcell)
of conventional symmetric supercapacitors and comparable to that of Li-ion
batteries. They are also capable of delivering a power density of 100 kW/kgcell,
which is 10 times higher than that (10 kW/kgcell) of supercapacitors and 100 times higher than that (1 kW/kgcell) of Li-ion batteries.
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纛鼙-

银虫 (小有名气)


★★★ 三星级,支持鼓励

氧化石墨烯和石墨烯的氧化物具体什么区别?
3楼2011-09-26 21:21:57
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0513flpb

至尊木虫 (职业作家)


引用回帖:
3楼: Originally posted by 纛鼙- at 2011-09-26 21:21:57:
氧化石墨烯和石墨烯的氧化物具体什么区别?

对于这个问题你可以看看这个帖子,或许对你有些帮助!http://muchong.com/bbs/viewthread.php?tid=3426055&fpage=1
4楼2011-09-27 08:15:20
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纛鼙-

银虫 (小有名气)


引用回帖:
4楼: Originally posted by 0513flpb at 2011-09-27 08:15:20:
对于这个问题你可以看看这个帖子,或许对你有些帮助!http://muchong.com/bbs/viewthread.php?tid=3426055&fpage=1

谢谢
5楼2011-09-29 16:47:47
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西门拍砖

木虫 (小有名气)


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你这标题好像不太对,它这个严格意义上说不是锂离子电池,而是基于锂离子作为传导介质的超级电容器,超电容本身就具有高比功率和支持超快速充电的特性,但普遍在比能量上低于锂离子电池,因为它的反应局限于surface,没到bulk
6楼2013-07-12 11:06:46
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简单回复
2011-09-22 20:09   回复  
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