能源化学(英文) ›› 2017, Vol. 26 ›› Issue (6): 1196-1202.DOI: 10.1016/j.jechem.2017.07.016

• Articles • 上一篇    下一篇

Integrated Ni2P nanosheet arrays on three-dimensional Ni foam for highly efficient water reduction and oxidation

Jintao Rena,b, Zhongpan Hua,b, Chong Chena,b, Yuping Liub, Zhongyong Yuana,b   

  1. a National Institute for Advanced Materials, School of Materials Science and Engineering, Nankai University, Tianjin 300353, China;
    b Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Nankai University, Tianjin 300071, China
  • 收稿日期:2017-05-12 修回日期:2017-07-24 发布日期:2017-11-24
  • 通讯作者: Zhongyong Yuan,E-mail address:zyyuan@nankai.edu.cn
  • 基金资助:

    This work was supported by the National Natural Science Foundation of China (21421001, 21573115), and the Natural Science Foundation of Tianjin (17JCYBJC17100).

Integrated Ni2P nanosheet arrays on three-dimensional Ni foam for highly efficient water reduction and oxidation

Jintao Rena,b, Zhongpan Hua,b, Chong Chena,b, Yuping Liub, Zhongyong Yuana,b   

  1. a National Institute for Advanced Materials, School of Materials Science and Engineering, Nankai University, Tianjin 300353, China;
    b Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Nankai University, Tianjin 300071, China
  • Received:2017-05-12 Revised:2017-07-24 Published:2017-11-24
  • Contact: Zhongyong Yuan,E-mail address:zyyuan@nankai.edu.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21421001, 21573115), and the Natural Science Foundation of Tianjin (17JCYBJC17100).

摘要: The large-scale synthesis of efficient nonprecious bifunctional electrocatalysts for overall water splitting is a great challenge for future renewable energy conversion systems. Herein, Ni2P nanosheet arrays directly grown on three-dimensional (3D) Ni foam (NiP/NF) are fabricated by hydrothermal treatment of metallic Ni foam with H2O2 solution and subsequent phosphidation with NaH2PO2. The NiP/NF as electrocatalyst exhibits superior activities for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Most importantly, employing both as the cathode and anode for an alkaline water electrolyzer, NiP/NF only requires a cell voltage of 1.63 V to reach a current density of 10 mV cm-2, together with stronger durability. Preliminary catalytic information suggests that the tailored 3D superstructure and integrated electrode configurations afford improved active sties and enhanced electron/mass transfer, responding for the outstanding activity and stability.

关键词: Nickel phosphide, Electrocatalyst, Hydrogen evolution, Oxygen evolution, Water splitting

Abstract: The large-scale synthesis of efficient nonprecious bifunctional electrocatalysts for overall water splitting is a great challenge for future renewable energy conversion systems. Herein, Ni2P nanosheet arrays directly grown on three-dimensional (3D) Ni foam (NiP/NF) are fabricated by hydrothermal treatment of metallic Ni foam with H2O2 solution and subsequent phosphidation with NaH2PO2. The NiP/NF as electrocatalyst exhibits superior activities for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Most importantly, employing both as the cathode and anode for an alkaline water electrolyzer, NiP/NF only requires a cell voltage of 1.63 V to reach a current density of 10 mV cm-2, together with stronger durability. Preliminary catalytic information suggests that the tailored 3D superstructure and integrated electrode configurations afford improved active sties and enhanced electron/mass transfer, responding for the outstanding activity and stability.

Key words: Nickel phosphide, Electrocatalyst, Hydrogen evolution, Oxygen evolution, Water splitting