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henryleebs

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[交流] Carbon-Coated Single-Crystal LiMn2O4 Nanoparticle Clusters as Cathode Material 已有2人参与

近期发表在Angewandte Chemie的研究报告:
Recently, a spinel LiMn2O4 having a three-dimensional
tunnel structure for the migration of lithium ions has received
much attention as a potential high-power cathode material for
LIBs because of its high operating voltage, abundance, low
manufacturing cost, low toxicity, and excellent voltage profile
compared to commonly used cathode materials such as
layered LiCoO2.[1] Moreover, LiMn2O4 has the advantage of
fast charging because the delithiated structure of spinel
LiMn2O4 is relatively stable in terms of thermodynamics and
structure compared to that of layered materials such as
LiCoO2, which in an overcharged state undergo undesirable
structural changes that degrade battery performance.[2] However,
bulk LiMn2O4 did not fully satisfy high-power requirements
because of their low electronic and ionic conductivities.
On the other hand, it is well known that nanosized cathode
materials offer higher rate capability by reducing lithium-iondiffusion
distances and increasing the contact area between
the electrode and the electrolyte.[3] Therefore, in the past
decade, the synthesis of nanostructured LiMn2O4 having
various morphologies has been intensively studied to enhance
the rate capability;[4] some notable results are summarized in
Table S1 in the Supporting Information.filename]AngewChem2012FastLi-Ion3mgpersqcm.pdf[/filename]

[ Last edited by henryleebs on 2012-9-18 at 08:39 ]
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  • 2012-09-18 08:28:13, 1.12 M

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Rich0429

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♠木虫小工♠

祝福小虫我生日快乐呼呼呼 #.#
为何低调
2楼2012-09-18 08:34:58
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xmdxx1182

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小木虫: 金币+0.5, 给个红包,谢谢回帖
600镀LMO难道不被还原吗
3楼2012-09-19 01:50:56
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njzhouyiming

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小木虫: 金币+0.5, 给个红包,谢谢回帖
此文早就发过,楼主out了
4楼2012-09-19 06:36:51
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