Ultra-Low-Potential Methanol Oxidation on Single-Ir-Atom Catalyst.

Gong, Liyuan; Zhu, Xiaorong; Nga, Ta Thi Thuy; Liu, Qie; Wu, Yujie; Yang, Pupu; Zhou, Yangyang; Xiao, Zhaohui; Dong, Chung-Li; Fu, Xianzhu; Tao, Li; Wang, Shuangyin

Gong, Liyuan; Zhu, Xiaorong; Nga, Ta Thi Thuy; Liu, Qie; Wu, Yujie; Yang, Pupu; Zhou, Yangyang; Xiao, Zhaohui; Dong, Chung-Li; Fu, Xianzhu; Tao, Li; Wang, Shuangyin.

Afiliación

Gong L; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China.
Zhu X; College of Materials Science and Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518000, China.
Nga TTT; School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
Liu Q; Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China.
Wu Y; Department of Physics, Tamkang University, Tamsui, 25137, Taiwan.
Yang P; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China.
Zhou Y; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China.
Xiao Z; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China.
Dong CL; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China.
Fu X; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China.
Tao L; Department of Physics, Tamkang University, Tamsui, 25137, Taiwan.
Wang S; College of Materials Science and Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518000, China.

Angew Chem Int Ed Engl ; 63(28): e202404713, 2024 Jul 08.

Article en En | MEDLINE | ID: mdl-38670925

ABSTRACT

ABSTRACT

Methanol oxidation plays a central role to implement sustainable energy economy, which is restricted by the sluggish reaction kinetics due to the multi-electron transfer process accompanied by numerous sequential intermediate. In this study, an efficient cascade methanol oxidation reaction is catalyzed by single-Ir-atom catalyst at ultra-low potential (<0.1âV) with the promotion of the thermal and electrochemical integration in a high temperature polymer electrolyte membrane electrolyzer. At the elevated temperature, the electron deficient Ir site with higher methanol affinity could spontaneous catalyze the CH3OH dehydrogenation to CO under the voltage, then the generated CO and H2 was electrochemically oxidized to CO2 and proton. However, the methanol cannot thermally decompose with the voltage absence, which confirm the indispensable of the coupling of thermal and electrochemical integration for the methanol oxidation. By assembling the methanol oxidation reaction with hydrogen evolution reaction with single-Ir-atom catalysts in the anode chamber, a max hydrogen production rate reaches 18âmol gIr -1 h-1, which is much greater than that of Ir nanoparticles and commercial Pt/C. This study also demonstrated the electrochemical methanol oxidation activity of the single atom catalysts, which broadens the renewable energy devices and the catalyst design by an integration concept.

Palabras clave

coupling of thermal and electrochemical; methanol oxidation reaction; single atom catalysts; ultra-low-potential

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania

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