24小时热门版块排行榜

>考博 (311)
>论坛更新日志 (301)
>导师招生 (244)
>招聘信息布告栏 (174)
>虫友互识 (160)
>物理 (140)
>休闲灌水 (124)
>海外博后 (30)
>博后之家 (10)
>留学生活 (10)
>基金申请 (10)
>生物材料 (9)
>留学DIY (8)
>教师之家 (2)
>硕博家园 (2)
>论文投稿 (2)

返回列表

henryleebs

铁杆木虫 (正式写手)

应助: 1 (幼儿园)
金币: 5696.7
红花: 18
帖子: 766
在线: 259小时
虫号: 1891857
注册: 2012-07-13
性别: GG
专业: 电能储存与节电技术

[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 ]

回复此楼