Your browser doesn't support javascript.
loading
Ruthenium Single-Atom Modulated Protonated Iridium Oxide for Acidic Water Oxidation in Proton Exchange Membrane Electrolysers.
Tang, Jialin; Liu, Xinyan; Xiong, Xiaoxia; Zeng, Qisheng; Ji, Yuan; Liu, Chunxiao; Li, Jiawei; Zeng, Hongliang; Dai, Yizhou; Zhang, Xinyan; Li, Chengbo; Peng, Hongjie; Jiang, Qiu; Zheng, Tingting; Pao, Chih-Wen; Xia, Chuan.
Afiliação
  • Tang J; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Liu X; Key Laboratory of Quantum Physics and Photonic Quantum Information, Ministry of Education, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China.
  • Xiong X; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Zeng Q; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Ji Y; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Liu C; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Li J; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Zeng H; Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui, 230026, P. R. China.
  • Dai Y; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Zhang X; Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui, 230026, P. R. China.
  • Li C; Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Anhui, 230026, P. R. China.
  • Peng H; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Jiang Q; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Zheng T; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang, 313001, P. R. China.
  • Pao CW; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
  • Xia C; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, Zhejiang, 313001, P. R. China.
Adv Mater ; : e2407394, 2024 Aug 15.
Article em En | MEDLINE | ID: mdl-39148174
ABSTRACT
Proton exchange membrane water electrolysers promise to usher in a new era of clean energy, but they remain a formidable obstacle in designing active and durable electrocatalysts for the acidic oxygen evolution reaction (OER). In this study, a protonated iridium oxide embedded with single-atom dispersed ruthenium atoms (H3.8Ir1- xRuxO4) that demonstrates exceptional activity and stability in acidic water oxidation is introduced. The single Ru dopants favorably induce localized oxygen vacancies in the Ir─O lattice, synergistically strengthening the adsorption of OOH* intermediates and enhancing the intrinsic OER activity. In addition, the preferential oxidation of Ru and the electronegativity of the oxygen vacancies significantly stabilize the Ir─O active sites, improving the OER stability. Consequently, the H3.8Ir1─ xRuxO4 catalyst shows an overpotential of 255 mV at 10 mA cm-2 and displays exceptional catalytic endurance in acidic electrolytes, surpassing 1100 h, representing a remarkable one-order-of-magnitude increase in stability compared to that of pristine H3.8IrO4. A proton exchange membrane electrolyser utilizing the H3.8Ir1- xRuxO4 catalyst as an anode exhibits stable performance for more than 1280 h under a high current density of 2 A cm-2.
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2024 Tipo de documento: Article
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2024 Tipo de documento: Article