Research progress of gas evolution behavior on electrode surface

• 1、School of Chemistry and Chemical Engineering, Chongqing University

Abstract：In the context of today \'s \' dual-carbon goal \' and energy transformation, hydrogen energy stands out from many energy sources because of its high energy density, wide sources, and green pollution-free. Hydrogen production from water electrolysis is considered to be a clean and mild way to produce hydrogen, so it has an extremely broad prospect. Although many researchers have focused their attention on the electrocatalytic reaction at the electrode interface during the hydrogen evolution process of electrolytic water, in the actual hydrogen evolution process, more people ignore the mass transfer process of gas phase products from the electrode interface to the electrolyte or gas. In this paper, we focus on the process of bubble mass transfer. Based on the basic theory of bubbles on the electrode surface, the related research on the nucleation, growth and detachment process of bubbles, the regulation of bubble behavior on the electrode surface and the main challenges faced by the current research are reviewed. It is of great significance to improve the efficiency of hydrogen evolution and reduce energy consumption.

Keywords： physical chemistry；bubble electrode hydrogen evolving