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Performance modulation of energy storage devices: A case of Ni-Co-S electrode materials

Authors
  • Liu, Chang
  • Wu, Xiang
  • Wang, Bao
Publication Date
Jul 15, 2020
Source
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
Keywords
License
Unknown
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Abstract

Nickel cobalt sulfides are deemed as promising electrode materials for energy storage devices due to their rich redox active sites as well as superior conductivity. Herein, we report P-doped [email protected] ([email protected]) assemblies consisting of many nanosheets through facile one-step solvothermal route and a subsequent phosphorization process. The as-obtained product is utilized as electrode material for supercapacitor, which shows a specific capacity of 1026 C g(-1) at current density of 1 A g(-1). An asymmetric supercapacitor (ASC) delivers an energy density of 131.40 Wh kg(-1) at a power density of 1355.37 W kg(-1) . As anode material for lithium ion battery, it presents a discharge capacity of 2300.10 mAh g(-1) at 0.1 A g(-1). The superior electrochemical performance could be attributed to their unique spatial architectures and synergistic effect between composites.

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