Modifying Ti-Based Gas Diffusion Layer Passivation for Polymer Electrolyte Membrane Water Electrolysis via Electrochemical Nitridation

Autor: Yue Liu, Shaobo Huang, Dongdong Wang, Heng Zhang, Dongfang Shan, Shanlong Peng, Guixin Shen, Lifan Wang, Xindong Wang
Rok vydání: 2022
Předmět:
Zdroj: ACS applied materialsinterfaces. 14(13)
ISSN: 1944-8252
Popis: A gas diffusion layer represents an important element of collector and stack components used in polymer electrolyte membrane (PEM) water electrolyzers (WE). Nowadays, titanium-based gas diffusion layers (GDLs) have high stability and are frequently employed as anode GDLs, yet reliability issues emerging from passivation have limited their practical deployment. Hence, we develop an inexpensive way of producing high conductivity and corrosion resistance of Ti-based GDLs through electrochemical nitridation. The morphology and content of the nitride phase on the surface of the Ti felt GDL are efficiently regulated by adjusting reduction potential and reaction time. According to X-ray photoelectron spectroscopy studies, the modified Ti felt is coated with ammonium ions and nitrogen-incorporated oxides, namely, TiN/TiO
Databáze: OpenAIRE