GO@Se@Ni Cathode Materials for Lithium-Selenium Battery
- Resource Type
- Article
- Authors
- Liu, Jun; Lan, Daoyun; Huang, Xinyue; Zhang, Feitao; Huang, Aiqi; Xiao, Yaoxin; Zhao, Zhuozhuo; Liu, Liying; Ke, Xi; Shi, Zhicong; Guo, Zaiping
- Source
- Journal of the Electrochemical Society; January 2019, Vol. 166 Issue: 3 pA5259-A5264, 6p
- Subject
- Language
- ISSN
- 00134651; 19457111
Selenium is a promising cathode material for high-energy lithium batteries. In this work, selenium was electrodeposited on nickel foam from aqueous selenite solution. The influences of pH values and current density on electrodeposited Se@Ni were investigated. It is found that electrodeposition at pH 7 and 0.5 mA cm[?]2 enables high current efficiency and produces uniform and smooth deposits. Graphene oxide (GO) was further coated on Se@Ni through physical adsorption to produce GO@Se@Ni. The developed GO@Se@Ni electrode delivers a high initial specific capacity of 593 mAh g[?]1 and good capacity retention over 100 cycles at 0.1 C.