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Accelerated Proton Transfer in Asymmetric Active Units for Sustainable Acidic Oxygen Evolution Reaction.
Deng, Liming; Hung, Sung-Fu; Liu, Shuyi; Zhao, Sheng; Lin, Zih-Yi; Zhang, Chenchen; Zhang, Ying; Wang, Ai-Yin; Chen, Han-Yi; Peng, Jian; Ma, Rongpeng; Jiao, Lifang; Hu, Feng; Li, Linlin; Peng, Shengjie.
Affiliation
  • Deng L; College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
  • Hung SF; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan.
  • Liu S; College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
  • Zhao S; College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
  • Lin ZY; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan.
  • Zhang C; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
  • Zhang Y; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
  • Wang AY; Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
  • Chen HY; Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
  • Peng J; Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
  • Ma R; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China.
  • Jiao L; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China.
  • Hu F; College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
  • Li L; College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
  • Peng S; College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
J Am Chem Soc ; 146(33): 23146-23157, 2024 Aug 21.
Article in En | MEDLINE | ID: mdl-39109994
ABSTRACT
The poor durability of Ru-based catalysts limits the practical application in proton exchange membrane water electrolysis (PEMWE). Here, we report that the asymmetric active units in Ru1-xMxO2 (M = Sb, In, and Sn) binary solid solution oxides are constructed by introducing acid-resistant p-block metal sites, breaking the activity and stability limitations of RuO2 in acidic oxygen evolution reaction (OER). Constructing highly asymmetric Ru-O-Sb units with a strong electron delocalization effect significantly shortens the spatial distance between Ru and Sb sites, improving the bonding strength of the overall structure. The unique two-electron redox couples at Sb sites in asymmetric active units trigger additional chemical steps at different OER stages, facilitating continuous proton transfer. The optimized Ru0.8Sb0.2O2 solid solution requires a superlow overpotential of 160 mV at 10 mA cm-2 and a record-breaking stability of 1100 h in an acidic electrolyte. Notably, the scale-prepared Ru0.8Sb0.2O2 achieves efficient PEMWE performance under industrial conditions. General mechanism analysis shows that the enhanced proton transport in the asymmetric Ru-O-M unit provides a new working pathway for acidic OER, breaking the scaling relationship without sacrificing stability.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2024 Document type: Article Affiliation country: China Country of publication: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2024 Document type: Article Affiliation country: China Country of publication: United States