Effect of substrate temperature on morphology and electrochemical performance of radio frequency magnetron sputtered lithium nickel vanadate films used as negative electrodes for lithium microbatteries

被引:37
作者
Reddy, MV [1 ]
Pecquenard, B [1 ]
Vinatier, P [1 ]
Levasseur, A [1 ]
机构
[1] Univ Bordeaux 1, ICMCB, CNRS, ENSCPB, F-33607 Pessac, France
关键词
D O I
10.1021/jp0565554
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Lithium nickel vanadate thin films were prepared by radio frequency magnetron sputtering at various substrate temperatures (T-s). These thin films have been investigated as anode electrode material in the use of microbatteries. Films were characterized by Rutherford backscattering spectroscopy, nuclear reaction analysis, Auger electron spectroscopy, glancing-incidence X-ray diffraction analysis, Raman spectroscopy, scanning electron microscopy, atomic force microscopy, and high-resolution transmission electron microscopy techniques. The anodic electrochemical performances of the films have been evaluated by cyclic voltammetry at a scan rate of 1 mV/s and by galvanostatic cycling, with lithium metal as the counter and the reference electrode, and cycled in the range of 0.02-3.0 V at a current density of 75 mu A/cm(2). Thin films prepared at a T-s of 650 degrees C show a discharge capacity at the 20th cycle of 1100 (+/- 10) mAh/g, which exhibited excellent capacity retention with a small capacity fade.
引用
收藏
页码:4301 / 4306
页数:6
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[41]   Investigation of cobalt oxides as anode materials for Li-ion batteries [J].
Wang, GX ;
Chen, Y ;
Konstantinov, K ;
Lindsay, M ;
Liu, HK ;
Dou, SX .
JOURNAL OF POWER SOURCES, 2002, 109 (01) :142-147