Electrospun Nb-doped LiNi0.4Co0.2Mn0.4O2 nanobelts for lithium-ion batteries
Electrospun Nb-doped LiNi0.4Co0.2Mn0.4O2 nanobelts for lithium-ion batteries
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用于锂离子电池的电纺铌掺杂LiNi0.4Co0.2Mn0.4O2纳米带
DOI：
10.1039/c7qi00811b
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发表时间：
2018-05
影响因子：
7
通讯作者：
Wang Taihong
中科院分区：
文献类型：
--
作者：
Lv Congjie;Peng Yi;Yang Jing;Duan Xiaochuan;Ma Jianmin;Wang Taihong
通过对聚丙烯腈的热解和Nb-NCM的形成(包括成核和后续生长过程)的精细控制，首次通过简单的电纺丝方法成功地制备了Nb掺杂的LiNi0.4Co0.2Mn0.4O2(Nb-NCM)纳米带。根据中间产物的温度依赖表征和分离的实验证据，纳米带的形成经历了一个从纳米纤维到纳米管，最后到由亚单位纳米粒子组成的纳米带的形态演变过程。电纺Nb-NCM纳米带作为锂离子电池正极材料具有优异的电化学性能，这与其一维纳米结构、结晶性好、Nb掺杂等特点有关。这些特性可以改善Nb-NCM纳米带的离子导电性，稳定电极/电解液界面。因此，本研究开发的一维Nb-NCM纳米带不仅为研究电纺法制备多元素氧化物提供了一个很好的模型，而且为设计高性能锂离子电池复杂成分的一维层状阴极开辟了一条简便的途径。
Nb-Doped LiNi0.4Co0.2Mn0.4O2 (Nb-NCM) nanobelts have been successfully fabricated for the first time through a facile electrospinning method by the delicate control of PAN pyrolysis and Nb-NCM formation (including nucleation and subsequent growth processes). According to the experimental evidence from temperature-dependent characterization and isolation of the intermediates, the formation of nanobelts undergoes a morphology evolution from nanofibres to nanotubes, and finally to the nanobelts composed of subunit nanoparticles. When used as a cathode for lithium-ion batteries, the as-electrospun Nb-NCM nanobelts exhibit superior electrochemical performances, which could be attributed to their unique features, such as their 1D nanostructure, well-crystallized nature and Nb-doping. These features can improve the ionic conductivity of Nb-NCM nanobelts and stabilize the electrode/electrolyte interface. Therefore, the 1D Nb-NCM nanobelts developed in this study not only provide an excellent model to investigate the fabrication of multi-element oxides using the electrospinning method, but also open up a facile route for designing 1D layered cathodes with a complex component for high performance lithium-ion batteries.
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DOI：
10.1016/j.colsurfa.2014.03.096
发表时间：
2014-07
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子：
--
作者：
V. S. Channu;D. Ravichandran;B. Rambabu;R. Holze
通讯作者：
V. S. Channu;D. Ravichandran;B. Rambabu;R. Holze
影响因子：
3.9
作者：
Qiyuan Chen;Chenqiang Du;D. Qu;Xin-he Zhang;Zhiyuan Tang
通讯作者：
Qiyuan Chen;Chenqiang Du;D. Qu;Xin-he Zhang;Zhiyuan Tang
影响因子：
8.6
作者：
Wise, Anna M.;Ban, Chunmei;Toney, Michael F.
通讯作者：
Toney, Michael F.
影响因子：
9.5
作者：
Anqiang Pan;H. Wu;Le Yu;Ting Zhu;X. Lou
通讯作者：
Anqiang Pan;H. Wu;Le Yu;Ting Zhu;X. Lou
DOI：
10.1149/1.2938904
发表时间：
2008-05
期刊：
--
影响因子：
--
作者：
J. Wilcox;M. Doeff
通讯作者：
J. Wilcox;M. Doeff