Welcome to Visit Journal of Electrochemistry,Today is Share:

Journal of Electrochemistry ›› 2021, Vol. 27 ›› Issue (2): 157-167.  doi: 10.13208/j.electrochem.201251

Special Issue: “电分析”专题文章 “电催化和燃料电池”专题文章

• ARTICLE • Previous Articles     Next Articles

Electrochemiluminescence Imaging Hydrogen Evolution Reaction on Single Platinum Nanoparticles Using a Bipolar Nanoelectrode Array

Xiang Qin, Zhong-Qiu Li, Jian-Bin Pan, Jian Li, Kang Wang, Xing-Hua Xia*()   

  1. State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering,Nanjing University, Nanjing 210023, Jiangsu China
  • Received:2021-02-14 Revised:2021-03-24 Online:2021-04-28 Published:2021-03-27
  • Contact: Xing-Hua Xia E-mail:xhxia@nju.edu.cn


A high-density (5.7 × 108 cm-2) nanoelectrode array with the electrode diameter of 200 nm and the interelectrode distance of 450 nm were fabricated. The nanoelectrode array consisted of gold nanowires embedded in a porous anodic aluminum oxide (AAO) matrix, having regular nanoelectrode distribution and highly uniform nanoelectrode size. The gold nanoelectrode array was used as a closed bipolar nanoelectrode array combined with electrochemiluminescence (ECL) method to map the electrocatalytic activity of platinum nanoparticles toward hydrogen evolution reaction (HER) by modifying the catalysts on single nanoelectrodes. Results show that HER on single bipolar nanoelectrodes could be imaged with the sub-micrometer spatial resolution. The present approach offers a platform to image local electrochemical activity of electrocatalytic materials, energy materials and cellular processes with high spatial resolution.

Key words: nanoelectrode array, bipolar electrode, electrochemiluminescence imaging, electrochemical imaging, single platinum nanoparticles, hydrogen evolution reaction