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

Liu, Chang ; Wu, Xiang ; Wang, Bao

Chemical engineering journal (Lausanne, Switzerland : 1996), 2020-07, Vol.392, p.123651, Article 123651 [Periódico revisado por pares]

Elsevier B.V

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  • Título:
    Performance modulation of energy storage devices: A case of Ni-Co-S electrode materials
  • Autor: Liu, Chang ; Wu, Xiang ; Wang, Bao
  • Assuntos: Asymmetric supercapacitor ; Battery-type electrode ; Lithium-ion battery ; Long cycling life ; NiCo2S4@C nanosheets ; Phosphorization
  • É parte de: Chemical engineering journal (Lausanne, Switzerland : 1996), 2020-07, Vol.392, p.123651, Article 123651
  • Descrição: •PNCS@C assemblies are prepared through facile one-step solvothermal route and a subsequent phosphorization process.•The as-obtained product as electrode material shows a specific capacity of 1026 C g−1 at current density of 1 A g−1.•An asymmetric supercapacitor delivers an energy density of 131.40 Wh kg−1 at 1355.37 W kg−1.•The superior electrochemical performance could be attributed to their unique spatial architectures and synergistic effect. 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 Ni-Co-S@C (PNCS@C) 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.
  • Editor: Elsevier B.V
  • Idioma: Inglês
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