CoNi 2 S 4 ‐Graphene‐2D‐MoSe 2 as an Advanced Electrode Material for Supercapacitors
2016; Wiley; Volume: 6; Issue: 13 Linguagem: Inglês
10.1002/aenm.201600341
ISSN1614-6840
AutoresJianfeng Shen, Jingjie Wu, Liyuan Pei, Marco‐Tulio F. Rodrigues, ZhuQing Zhang, Fangfang Zhang, Xiang Zhang, Pulickel M. Ajayan, Mingxin Ye,
Tópico(s)Advanced battery technologies research
Resumo3D 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.
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