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An improvement on the electrocatalytic performance of ZIF-67 byin situself-growing CNTs on surface.
Tang, Miao; Sun, Jintao; Naibao, Huang; Wang, Bin; Ge, Xiaowen; Dong, Wenjing; Li, Wanting; Sun, Xiannian.
Afiliación
  • Tang M; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Sun J; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Naibao H; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Wang B; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Ge X; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Dong W; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Li W; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
  • Sun X; College of Transportation Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China.
Nanotechnology ; 35(23)2024 Mar 19.
Article en En | MEDLINE | ID: mdl-38430570
ABSTRACT
Efficient and robust oxygen reduction reaction (ORR) catalysts are essential for the development of high-performance anion-exchange membrane fuel cells (AEMFC). To enhance the electrochemical performance of metal-organic frameworks of cobalt-based zeolite imidazolium skeleton (ZIF-67), this study reported a novel ZIF-67-4@CNT byin situgrowing carbon nanotubes (CNTs) on the surface of ZIF-67 via a mild two-step pyrolysis/oxidation treatment. The electrochemical results showed that the as-prepared ZIF-67-4@CNT after CTAB modification exhibited excellent catalytic activity with good stability, with Eonset, E1/2, and Ilimit, respectively were 0.98 V (versus RHE), 0.87 V (versus RHE) and 6.04 mA cm-2@1600 rpm, and a current retention rate of about 94.21% after polarized at 0.80 V for 10 000 s, which were all superior to that of the commercial 20 wt% Pt/C. The excellent ORR catalytic performance was mainly attributed to the large amount of thein situgrowing CNTs on the surface, encapsulated with a wide range of valence states of metallic cobalt.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanotechnology Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanotechnology Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido