Activation properties of reticulate Ni3S2 electrode materials grown on nickel foam for high performance supercapacitors

作者：Zhan, Jiang; Sui, Yanwei^*; Qi, Jiqiu^*; Wei, Fuxiang; He, Yezeng; Meng, Qingkun; Sun, Zhi

来源：Journal of Materials Science: Materials in Electronics , 2018, 29(24): 20775-20782.

DOI：10.1007/s10854-018-0219-2

• ENHANCED ELECTROCHEMICAL PERFORMANCE
• NI FOAM
• ELECTRICAL-PROPERTIES
• ENERGY-STORAGE
• ARRAYS
• NANOSTRUCTURES
• COMPOSITES
• STABILITY
• NICO2S4
• NANOSHEETS

Nickel based three-dimensional reticulate Ni3S2 was fabricated by a facile hydrothermal method with excellent capacitance after activation when used as electrode materials. Through electrochemical tests in 2M KOH solution, the Ni3S2 exhibits excellent capacitance performance of 0.647F cm(-2) at 2mA cm(-2). Due to its activation properties, the areal specific capacitance could increase to 6.244F cm(-2) at 2mA cm(-2) (965.1% increment) after 5000 cycles. It has a good capacitance retention ratio of 68.6% at a current density of 20mA cm(-2), and excellent stability with 89.75% retention of its values at 5000 cycles after circulations of 1000 numbers. The results demonstrate that the Ni3S2 is one of promising candidate electrode material for next-generation high performance supercapacitors.

• 出版日期2018-12
• 单位中国矿业大学（北京）