期刊
JOURNAL OF POWER SOURCES
卷 423, 期 -, 页码 159-165出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2019.03.074
关键词
FeN; Thin film; Magnetron sputtering; High capacity; High rate performance; Conversion reaction
资金
- National Natural Science Foundation of China [51767021]
- Jiangxi Yunjia High Tech Co., Ltd. [738010128]
Transition metal nitrides are promising alternative anode materials for the next-generation high-energy and high-power lithium ion batteries because of their large specific capacity and superior electronic and ionic conductivity. In this work, nanocrystalline gamma ''-FeN thin films are prepared by reactive magnetron sputtering and their lithium-storage performance is investigated. The gamma ''-FeN electrode retains high specific capacities of 1020.4 mAh/g after 100 discharge/charge cycles at the current density of 0.2 A/g and 667.1 mAh/g after 500 cycles at 2 A/g. Even at 10 A/g, a remarkable specific capacity of 469.0 mAh/g is achieved. Scanning and transmission electron microscopic analyses both prove that the microstructure of gamma ''-FeN thin film is durable against repeated lithiation and delithiation reactions.
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