FeS anchored reduced graphene oxide nanosheets as advanced anode material with superior high-rate performance for alkaline secondary batteries

作者：Shangguan, Enbo^*; Guo, Litan; Li, Fei; Wang, Qin; Li, Jing^*; Li, Quanmin; Chang, Zhaorong; Yuan, Xiao-Zi

来源：Journal of Power Sources, 2016, 327: 187-195.

DOI：10.1016/j.jpowsour.2016.07.031

• Anode material
• Alkaline secondary batteries
• Iron electrode
• Fe/Ni battery
• Electrochemical properties

A new nanocomposite formulation of the iron-based anode for alkaline secondary batteries is proposed. For the first time, FeS nanoparticles anchored on reduced graphene oxide (RGO) nanosheets are synthesized via a facile, environmentally friendly direct-precipitation approach. In this nanocomposite, FeS nanoparticles are anchored uniformly and tightly on the surface of RGO nanosheets. As an alkaline battery anode, the FeS@RGO electrode delivers a superior high-rate charge/discharge capability and outstanding cycling stability, even at a condition without any conductive additives and a high electrode loading of similar to 40 mg cm(-2). At high charge/discharge rates of 5C, 10C and 20C (6000 mA g(-1)), the FeS@RGO electrode presents a specific capacity of 288, 258 and 220 mAh g(-1), respectively. Moreover, the FeS@RGO electrode exhibits an admirable long cycling stability with a superior capacity retention of 87.6% for 300 cycles at a charge/discharge rate of 2C. The excellent electrochemical properties of the FeS@RGO electrode can be stemmed from the high specific surface area, peculiar electric conductivity and robust sheet-anchored structure of the FeS@RGO nanocomposite. By virtue of its superior fast charge/discharge properties, the FeS@RGO nanocomposite is suitable as an advanced anode material for high-performance alkaline secondary batteries.

• 出版日期2016-9-30
• 单位河南师范大学