Electrochemical Performances Investigation of New Carbon-Coated Nickel Sulfides as Electrode Material for Supercapacitors
作者： Xinyu Lei , Mu Li , Min Lu , Xiaohui Guan
DOI: 10.3390/MA12213509
关键词:
摘要: A new carbon-coated nickel sulfides electrode material (NST/CNTs@C) has been synthesized through an easy-to-operate process: NiS2/CNTs which was prepared by a hydrothermal method reacted with BTC (1,3,5-benzenetricarboxylic acid) under the condition of water bath heating to obtain precursor, and then precursor calcined in 450 °C nitrogen atmosphere NST/CNTs@C. The electrochemical performance NST/CNTs@C greatly improved because formation layer effectively increased specific surface area, reduced charge transport resistance inhibited morphological change charge-discharge process. Compared pure NiS2 NiS2/CNTs, presented great capacitance (620 F·g-1 at current density 1 A·g-1), better cycle stability (49.19% retention after 1000 cycles) more superior rate capability (when raised 10 A·g-1 remained 275 F·g-1).
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