能源化学(英文版)

能源化学(英文) ›› 2019, Vol. 28 ›› Issue (2): 129-135.DOI: 10.1016/j.jechem.2018.03.005

• Preface • 上一篇    下一篇

In situ growth of N-doped carbon coated CoNi alloy with graphene decoration for enhanced HER performance

Linlin Chena,b, Saisai Yanga, Kun Qiana, Wei Weia, Cheng Sunc, Jimin Xiea   

  1. a School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
    b School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
    c State Key Laboratory of Pollution Control and Resources, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, China
  • 收稿日期:2018-01-14 修回日期:2018-02-28 出版日期:2019-02-15 发布日期:2019-02-15
  • 通讯作者: Jimin Xie
  • 基金资助:

    We acknowledge the financial support from the National Natural Science Foundation (21676129, 21607063), the Science & Technology Foundation of Zhenjiang (GY2016021, GY2017001, GY2017009). Postgraduate Innovation Project of Jiangsu Province (KYLX16_0912).

In situ growth of N-doped carbon coated CoNi alloy with graphene decoration for enhanced HER performance

Linlin Chena,b, Saisai Yanga, Kun Qiana, Wei Weia, Cheng Sunc, Jimin Xiea   

  1. a School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
    b School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
    c State Key Laboratory of Pollution Control and Resources, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, China
  • Received:2018-01-14 Revised:2018-02-28 Online:2019-02-15 Published:2019-02-15
  • Contact: Jimin Xie
  • Supported by:

    We acknowledge the financial support from the National Natural Science Foundation (21676129, 21607063), the Science & Technology Foundation of Zhenjiang (GY2016021, GY2017001, GY2017009). Postgraduate Innovation Project of Jiangsu Province (KYLX16_0912).

摘要： Non-noble metal-based catalysts, especially stable ones, have gained increasing attentions in the field of electronically catalytic hydrogen evolution reaction (HER). In this work, an N-doped carbon confined Co-Ni alloy with reduced graphene oxide (rGO) decoration (CoNi@N-C/rGO) was fabricated for HER. The prepared catalyst exhibited excellent HER activity in an acidic electrolyte (Tafel slope of ～133.7 mV). The results showed that the enhanced HER performance of the nanostructures is attributed to the chemical and electronic synergic effect between the confined Co-Ni alloy and rGO. Stability tests, realized via longterm potential cycles and extended electrolysis, provided the confirmation of the exceptional durability of the catalyst, which originated from the confining effect of the N-doped carbon shell. This versatile method provides a strategy for designing stable non-precious metal electrocatalysts confined by carboncoating.

关键词: Metal alloys, N-doped carbon, Reduced graphene oxides, Hydrogen evolution reaction

Abstract: Non-noble metal-based catalysts, especially stable ones, have gained increasing attentions in the field of electronically catalytic hydrogen evolution reaction (HER). In this work, an N-doped carbon confined Co-Ni alloy with reduced graphene oxide (rGO) decoration (CoNi@N-C/rGO) was fabricated for HER. The prepared catalyst exhibited excellent HER activity in an acidic electrolyte (Tafel slope of ～133.7 mV). The results showed that the enhanced HER performance of the nanostructures is attributed to the chemical and electronic synergic effect between the confined Co-Ni alloy and rGO. Stability tests, realized via longterm potential cycles and extended electrolysis, provided the confirmation of the exceptional durability of the catalyst, which originated from the confining effect of the N-doped carbon shell. This versatile method provides a strategy for designing stable non-precious metal electrocatalysts confined by carboncoating.

Key words: Metal alloys, N-doped carbon, Reduced graphene oxides, Hydrogen evolution reaction