Details

Autor(en) / Beteiligte

• Xu, Kairui
• Jiang, Xiaojie
• Gong, Qinghua
• Ren, Yongqiang
• Gao, Tingting
• He, Yanyan
• Xu, Xiaolong
• Cao, Pei
• Zhou, Guowei

Titel

The design and synthesis of Ni3S4/Co3S4 heterostructure@mesoporous carbon with hybrid-capacitance

Ist Teil von

• Materials letters, 2021-05, Vol.290, p.129489, Article 129489

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •An electrode composed of Ni3S4/Co3S4 and porous carbon is designed and synthesized.•The heterostructure of Ni3S4 and Co3S4 are constructed in Ni3S4/Co3S4@MC electrode.•Hybrid-capacitive of EDLC and battery-type capacitance delivers the good performance. To obtain high-performance electrode materials, the Ni3S4/Co3S4 heterostructure@mesoporous carbon (MC) was designed and synthesized by hydrothermal technology. The X-ray powder diffraction (XRD), Raman, N2 adsorption–desorption (BET) and transmission electron microscope (TEM) tests proved a certain degree of graphitization, mesoporosity, and Ni3S4/Co3S4 heterostructure of Ni3S4/Co3S4@MC. The synergy of above structures delivered a good electrochemical reversibility and high charge transfer kinetics. As an electrode material with hybrid-capacitive of electrochemical double layer and battery-type capacitances, Ni3S4/Co3S4@MC displayed a specific capacitance of 1725.6 F g−1 at 0.5 A g−1 and a retention rate of 67.7% with a fading rate of 1.6% per cycle over 2000 cycles at 1.0 A g−1. It provides an effective method to synthesize the high-performance electrode materials with hybrid-capacitance.