Electrochemical performance of cathodes prepared on current collector with different surface morphologies
Electrochemical performance of cathodes prepared on current collector with different surface morphologies
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DOI：
10.1016/j.jpowsour.2013.02.021
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发表时间：
2013-12
影响因子：
9.2
通讯作者：
Tatsuya Nakamura;S. Okano;Noriko Yaguma;Yuka Morinaga;H. Takahara;Yoshihiro Yamada
中科院分区：
文献类型：
--
作者：
Tatsuya Nakamura;S. Okano;Noriko Yaguma;Yuka Morinaga;H. Takahara;Yoshihiro Yamada
采用普通刀刃技术在不同表面形貌的铝集电体上制备了LiCo1/3Ni1/3Mn1/3O2阴极电极。它们的电化学性能，特别是在高电流倍率下，受集电体表面形貌的影响：这意味着在表面粗糙的集电体上制备的电极极化较小。交流复阻抗分析表明，在集电体表面粗化的情况下，膜电极与集电体之间的界面电阻减小，电极与电解液之间的界面电阻减小，欧姆电阻增大。
LiCo1/3Ni1/3Mn1/3O2cathode electrodes were prepared onto Al current collectors with different surface morphologies through usual doctor blade technique. Their electrochemical performances, especially at high current rate, were influenced by the surface morphology of the current collector:. These implied the less polarization for the electrode prepared on the surface roughened current collector. In addition, the AC complex impedance analysis exhibited that the interface resistance between the film electrode and the current collector as well as the interface resistance between the electrode and the electrolyte was reduced in the case of the surface-roughened current collector, but that the Ohmic resistance was enlarged.