Chinese Journal of Catalysis ›› 2020, Vol. 41 ›› Issue (5): 847-852.DOI: 10.1016/S1872-2067(19)63356-5

• Special Column on Electrocatalysis • Previous Articles     Next Articles

Tuning the oxygen evolution electrocatalysis on NiFe-layered double hydroxides via sulfur doping

Shenzhou Li, Jianyun Liu, Shuo Duan, Tanyuan Wang, Qing Li   

  1. State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2019-10-14 Revised:2019-11-18 Online:2020-05-18 Published:2019-12-31
  • Contact: S1872-2067(19)63356-5
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21603078, 21705052, 51602223).

Abstract: We report a facile way to prepare sulfur (S) doped Ni4/5Fe1/5-layered double hydroxide (LDH) electrocatalysts for oxygen evolution reaction (OER). The influence of S doping amount on the OER activity of the resulted NiFe-LDHs was studied and the optimal surface S content was ca. 0.43 at%. The developed S-doped NiFe-LDH exhibits excellent OER catalyst activity in 1.0 M KOH with overpotential of only 257 mV at the current density of 10 mA cm-2. Moreover, the catalyst could maintain high activity after 30 h stability test. The high activity of the S-doped NiFe-LDH catalysts may originate from the synergistic effect between S and the Fe sites. This work provides a simple but efficient way to improve the OER performance of transition metal oxides/(oxy)hydroxides.

Key words: Oxygen evolution, Electrocatalysis, Layered double hydroxides, Sulfur doping, Water splitting