期刊
JOURNAL OF POWER SOURCES
卷 226, 期 -, 页码 219-222出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.10.089
关键词
LiCo1/3Mn1/3Ni1/3O2; Hollow sphere; Cathode material; Template
资金
- Science Technology Bureau of Shaoxing [2010A21031, 2012B70017]
- talent plan of university student of zhejiang province, innovation program of Shaoxing
- Natural Science Foundation of China [20901051]
LiCo1/3Mn1/3Ni1/3O2 hollow spheres with an average outer diameter of 300 nm and a wall thickness of about 50 nm are prepared by using carbon spheres as template. They demonstrate excellent electrochemical performance, including high discharge capacity and rate capability. At a current rate of 0.2C (34 mA g(-1), 0.34 mA cm(-2)), cathode materials constituted by the hollow spheres display a discharge capacity of 175.4 mAh g(-1). Even at a current rate of 10C (1700 mA g(-1), 17 mA cm(-2)), the discharge capacity also keeps at 91.5 mAh g(-1). The reasons lie in that the hollow structure has a large surface to contact with liquid electrolyte, resulting in a better electrochemical performance at high charge/discharge rate. (C) 2012 Elsevier B.V. All rights reserved.
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