High-performance RuO2/CNT paper electrode as cathode for anion exchange membrane water electrolysis

• DOI: 10.1016/j.apcatb.2024.124220
• Publication Date: 2024-05-21T01:55:34Z
• Authors: Jae-Yeop Jeong; Jong Min Lee; Yoo Sei Park; Song Jin; Shin-Woo Myeong; Sungjun Heo; Hoseok Lee; Justin Georg Albers; Young-Woo Choi; Min Ho Seo; Sung Mook Choi; Jooyoung Lee
• Keywords: Overpotential; Electrolysis of water

This study reports on the synthesis and characterization of an effective cathode paper electrode comprising comparatively inexpensive hydrous RuO2 (h-RuO2) nanoparticles carbon nanotubes (CNT) for anion exchange membrane (AEM) water electrolysis. The concentration CNT was varied to assess their impact electrocatalyst hydrogen evolution reaction (HER). electrocatalytic performance h-RuO2/CNT 22.0 wt% Ru evaluated. Promising results were obtained, with a current density -10 mA/cm2 at only 36 mV overpotential mass activity -2.41 A/gRu 100 mV. Additionally, we conducted first-principles calculations compare HER catalytic activities crystalline varying vacancies determine H2O in structural lattice using free-energy diagrams. findings demonstrate that can be used as efficient AEM