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Superstructure-Assisted Single-Atom Catalysis on Tungsten Carbides for Bifunctional Oxygen Reactions.
Li, Hongguan; Wang, Wu; Xue, Sikang; He, Jiarui; Liu, Chen; Gao, Guangying; Di, Shuanlong; Wang, Shulan; Wang, Jing; Yu, Zhiyang; Li, Li.
Afiliación
  • Li H; School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Wang W; State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Xue S; Foshan Graduate School of Innovation, Northeastern University, Foshan 528311, Guangdong, People's Republic of China.
  • He J; Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Liu C; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, People's Republic of China.
  • Gao G; Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Di S; School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Wang S; Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Wang J; Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Yu Z; Department of Chemistry, College of Science, Northeastern University, Shenyang 110819, Liaoning, People's Republic of China.
  • Li L; State Key Laboratory of Metastable Materials Science and Technology, Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, Hebei, People's Republic of China.
J Am Chem Soc ; 146(13): 9124-9133, 2024 Apr 03.
Article en En | MEDLINE | ID: mdl-38515273
ABSTRACT
Single-atom catalysis (SAC) attracts wide interest for zinc-air batteries that require high-performance bifunctional electrocatalysts for oxygen reactions. However, catalyst design is still highly challenging because of the insufficient driving force for promoting multiple-electron transfer kinetics. Herein, we report a superstructure-assisted SAC on tungsten carbides for oxygen evolution and reduction reactions. In addition to the usual single atomic sites, strikingly, we reveal the presence of highly ordered Co superstructures in the interfacial region with tungsten carbides that induce internal strain and promote bifunctional catalysis. Theoretical calculations show that the combined effects from superstructures and single atoms strongly reduce the adsorption energy of intermediates and overpotential of both oxygen reactions. The catalyst therefore presented impressive bifunctional activity with an ultralow potential gap of 0.623 V and delivered a high power density of 188.5 mW cm-2 for assembled zinc-air batteries. This work opens up new opportunities for atomic catalysis.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos