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CoNi 2 S 4 ‐Graphene‐2D‐MoSe 2 as an Advanced Electrode Material for Supercapacitors
Author(s) -
Shen Jianfeng,
Wu Jingjie,
Pei Liyuan,
Rodrigues MarcoTulio F.,
Zhang ZhuQing,
Zhang Fangfang,
Zhang Xiang,
Ajayan Pulickel M.,
Ye Mingxin
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201600341
Subject(s) - materials science , supercapacitor , graphene , electrode , horizontal scan rate , nanocomposite , capacitance , nanotechnology , capacitive sensing , electrochemistry , chemical engineering , cyclic voltammetry , chemistry , engineering , computer science , operating system
3D CoNi 2 S 4 ‐graphene‐2D‐MoSe 2 (CoNi 2 S 4 ‐G‐MoSe 2 ) nanocomposite is designed and prepared using a facile ultrasonication and hydrothermal method for supercapacitor (SC) applications. Because of the novel nanocomposite structures and resultant maximized synergistic effect among ultrathin MoSe 2 nanosheets, highly conductive graphene and CoNi 2 S 4 nanoparticles, the electrode exhibits rapid electron and ion transport rate and large electroactive surface area, resulting in its amazing electrochemical properties. The CoNi 2 S 4 ‐G‐MoSe 2 electrode demonstrates a maximum specific capacitance of 1141 F g −1 , with capacitance retention of ≈108% after 2000 cycles at a high charge–discharge current density of 20 A g −1 . As to its symmetric device, 109 F g −1 at a scan rate of 5 mV s −1 is exhibited. This pioneering work should be helpful in enhancing the capacitive performance of SC materials by designing nanostructures with efficient synergetic effects.