1. Exposing Cu(100) Surface via Ion-Implantation-Induced Oxidization and Etching for Promoting Hydrogen Evolution Reaction
- Author
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Yi-Chen Ruan, Ya-Meng Xie, Xin-Lin Chen, Lei Dong, Fei-Fei Zhang, Tian-Tian Yang, Xi-Feng Luo, Mei-Yue Cheng, Peng-Fei Yin, Cun-Ku Dong, Kui Lin, De-Jun Li, Hui Liu, and Xi-Wen Du
- Subjects
Electrochemistry ,General Materials Science ,Surfaces and Interfaces ,Condensed Matter Physics ,Spectroscopy - Abstract
Metallic materials with unique surface structure have attracted much attention due to their unique physical and chemical properties. However, it is hard to prepare bulk metallic materials with special crystal faces, especially at the nanoscale. Herein, we report an efficient method to adjust the surface structure of a Cu plate which combines ion implantation technology with the oxidation-etching process. The large number of vacancies generated by ion implantation induced the electrochemical oxidation of several atomic layers in depth; after chemical etching, the Cu(100) planes were exposed on the surface of the Cu plate. As a catalyst for acid hydrogen evolution reaction, the Cu plate with (100) planes merely needs 273 mV to deliver a current density of 10 mA/cm
- Published
- 2022