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Facile synthesis of highly efficient V2O5@NiCo2O4 as battery-type electrode material for high-performance electrochemical supercapacitors

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Abstract

Herein, we have designed and prepared the battery-type redox behavior enabled hybrid V2O5@NiCo2O4 heterostructures on nickel foam by a simple one-step chemical bath deposition method. The structural and compositional analyses confirmed the presence of V2O5 and NiCo2O4 in the as-prepared hybrid V2O5@NiCo2O4 composite. The electrochemical studies reveal that the V2O5@NiCo2O4 composite electrode exhibited a high specific capacity of 184.49 mA h g−1 at 1 A g−1 and excellent rate capability of 88.5% at 12 A g−1 with good cycling stability (94.3% capacity retention over 3000 cycles), which are superior to the NiCo2O4 electrode. The results demonstrate that the hybrid V2O5@NiCo2O4 composite have a wide range of applications in the energy storage field.

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Acknowledgements

This work was supported by BK 21 PLUS, Creative Human Resource Development Program for IT Convergence, Pusan National University, Busan, South Korea.

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Author notes

  1. Chandu V. V. Muralee Gopi and Hee-Je Kim have contributed equally to this work.

Authors and Affiliations

  1. School of Electrical and Computer Engineering, Pusan National University, Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan, 46241, South Korea

    Tae-Yong Park, Chandu V. V. Muralee Gopi, Rajangam Vinodh & Hee-Je Kim

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  1. Tae-Yong Park
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  2. Chandu V. V. Muralee Gopi
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  3. Rajangam Vinodh
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Correspondence to Chandu V. V. Muralee Gopi or Hee-Je Kim.

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Park, TY., Muralee Gopi, C.V.V., Vinodh, R. et al. Facile synthesis of highly efficient V2O5@NiCo2O4 as battery-type electrode material for high-performance electrochemical supercapacitors. J Mater Sci: Mater Electron 30, 13519–13524 (2019). https://doi.org/10.1007/s10854-019-01719-w

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