The influence of preparation conditions on electrochemical properties of LiNi0.5Mn1.5O4 thin film electrodes by PLD

被引：70
作者：
Xia, H.
Tang, S. B.
Lu, L.
Meng, Y. S.
Ceder, G.
机构：
[1] Singapore MIT Alliance, Singapore 117576, Singapore
[2] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
[3] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
来源：
ELECTROCHIMICA ACTA | 2007年 / 52卷 / 08期
关键词：
thin-film battery; LiNi0.5Mn1.5O4; pulsed laser deposition;
D O I：
10.1016/j.electacta.2006.07.013
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
LiNi0.5Mn1.5O4 thin films were prepared by pulsed laser deposition (PLD) on stainless steel substrates. The growth of the films has been studied as a function of substrate temperature and oxygen partial pressure in deposition, using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). Electrochemical properties of LiNi0.5Mn1.5O4 thin film cathodes were investigated using cyclic voltammetry and galvanostatic charge/discharge against a lithium anode. The initial capacity and capacity retention of the films are highly dependent on the crystallinity and purity of the films. LiNi0.5Mn1.5O4 thin films grown at 600 degrees C in an oxygen partial pressure of 200 mTorr are well crystallized with high purity, exhibiting excellent capacity retention between 3 and 5 V with a LiPF6-based electrolyte. (c) 2006 Elsevier Ltd. All rights reserved.
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收藏
页码：2822 / 2828
页数：7
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