Ru decorated Co nanoparticles supported by N-doped carbon sheet implements Pt-like hydrogen evolution performance in wide pH range

作者：Zhao, Dengke; Li, Zilong; Yu, Xiaolong; Zhou, Wei; Wu, Qikai; Luo, Yun; Wang, Nan^*; Liu, Anmin^*; Li, Ligui^*; Chen, Shaowei

来源：Chemical Engineering Journal, 2022, 450: 138254.

DOI：10.1016/j.cej.2022.138254

• Hydrogen evolution reaction
• pH-universal
• Electrocatalyst
• Ru-Co heterostructure

Development of high-performance pH-universal electrocatalyst for hydrogen evolution reaction (HER) is a vital step towards hydrogen economy but remains a major challenge. Herein, the Ru decorated Co nanoparticles supported by N-doped carbon sheets (Ru/Co@NC) are prepared by galvanic exchange reaction and display a remarkable performance for HER. In the 1.0 M KOH, 0.01 M PBS and 0.5 M H2SO4, respectively, Ru/Co@NC shows low overpotentials of 10, 283 and 50 mV at the current density of 10 mA cm(-2), comparable to benchmark Pt/C (23, 289 and 37 mV). Furthermore, deep experimental researches and DFT calculations indicate that the RuCo heterostructure shows more suitable energy of H2O* dissociation and H* adsorption compared to Ru and Co, which can significantly improve the HER activity. Besides excellent activity, in a wide pH range, the Ru/Co@NC also exhibits good stability with negligible current loss after a long-time HER test (30 h). This work may provide ponderable strategies for developing an efficient pH-universal HER electrocatalyst.

• 单位
  茂名学院