Journal of Radiation Research and Radiation Processing, Volume. 42, Issue 6, 060206(2024)

In situ synthesis of NiMoO4 cathode with high cycle stability and high specific capacitance for supercapacitors on nickel foam via gamma irradiation

Kai ZHANG1...2, Wei YAN1,2, Maosheng WU1,3, Yiwen LONG1, Fan ZHANG1,2, Hongwei HAN1,4, Xiaolin CHENG1,3, Feng GUO1,4, Zhe XING1,2, Jiangtao HU1,2,**, and Guozhong WU12,* |Show fewer author(s)
Author Affiliations
  • 1Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China
  • 2University of Chinese Academy of Sciences,Beijing 100049,China
  • 3ShanghaiTech University,Shanghai 14423,China
  • 4Shanghai University,Shanghai 10280,China
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    To enhance the capacitive performance of supercapacitors,NiMoO4 electrode materials were synthesized by applying a molybdenum source to the nickel foam (NF) surface using irradiation technology. The morphology,microstructure,and electrochemical properties of the materials were optimized by varying the absorbed dose. The in situ synthesized NiMoO4 on an NF surface is an effective anode material for supercapacitors,demonstrating impressive energy storage capabilities. Its specific capacitance reaches 586.1 C/g at a current density of 1 A/g. It maintains a specific capacitance of 361.5 C/g at 15 A/g,resulting in a performance retention of 85.6%. Furthermore,the material retains a specific capacitance of 533.4 C/g with a capacity retention rate of 91.6% after 10 000 charge/discharge cycles,indicating strong cycling stability. The NiMoO4 electrode material was combined with activated carbon (AC) to create a hybrid supercapacitor,NiMoO4//AC. This device,operating at a maximum voltage of 1.7 V,exhibited a high energy density of 44.5 Wh/kg at a power density of 800.0 W/kg. The specific capacitance of the device remained at 93.2% after 5 000 charge/discharge cycles at a current density of 10 A/g. This study demonstrated that NiMoO4 electrode materials,prepared via irradiation,possess excellent electrochemical properties and significant application potential,offering a novel approach for designing high-efficiency,low-cost supercapacitor electrodes.

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    Kai ZHANG, Wei YAN, Maosheng WU, Yiwen LONG, Fan ZHANG, Hongwei HAN, Xiaolin CHENG, Feng GUO, Zhe XING, Jiangtao HU, Guozhong WU. In situ synthesis of NiMoO4 cathode with high cycle stability and high specific capacitance for supercapacitors on nickel foam via gamma irradiation[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(6): 060206

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    Paper Information

    Category: RADIATION CHEMISTRY

    Received: Oct. 25, 2024

    Accepted: Dec. 7, 2024

    Published Online: Jan. 15, 2025

    The Author Email: HU Jiangtao (胡江涛), WU Guozhong (吴国忠)

    DOI:10.11889/j.1000-3436.2024-0090

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