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Enhancing Oxygen Evolution Reaction Performance of Metal-Organic Frameworks through Cathode Activation.
Dong, Jie; Boukhvalov, Danil W; Lv, Cuncai; Humphrey, Mark G; Zhang, Chi; Huang, Zhipeng.
Afiliación
  • Dong J; China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical Science and Engineering Institution, Tongji University, Shanghai, 200092, China.
  • Boukhvalov DW; College of Science, Nanjing Forestry University, Nanjing, 210037, China.
  • Lv C; Institute of Physics and Technology, Ural Federal University, Mira Str. 19, Yekaterinburg, 620002, Russia.
  • Humphrey MG; Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
  • Zhang C; Research School of Chemistry, Australian National University, Canberra, 2601, ACT, Australia.
  • Huang Z; China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical Science and Engineering Institution, Tongji University, Shanghai, 200092, China.
ChemSusChem ; : e202401176, 2024 Jul 05.
Article en En | MEDLINE | ID: mdl-38967038
ABSTRACT
Due to their abundant active sites and porous structures, metal-organic frameworks (MOFs) have garnered significant interest as oxygen evolution reaction (OER) electrocatalysts. Nevertheless, the development of MOF s-based electrocatalysts with efficient OER activity and excellent stability simultaneously still face challenges. Herein, a cathodic activation strategy was used to enhance the OER electrocatalytic performance of M-HHTP for the first time, where M refers to Ni, Cu, Co, Fe, while HHTP denotes 2, 3, 6, 7, 10, 11-hexahydroxytriphenylene. As a prototype, the activated Ni-HHTP (HA-Ni-HHTP) demonstrates outstanding OER performance, with an overpotential as low as 140 mV at 20 mA cm-2 and a small Tafel slope of 78.7 mV-1, surpassing commercial RuO2 and rivaling state-of-the-art MOFs-based electrocatalysts. Characterizations and density functional theory calculations reveal that the superior performance of HA-Ni-HHTP is primarily ascribed to changes in semiconductor type, contact angle, and oxygen vacancy content induced by cathodic activation. Electrochemical impedance spectroscopy analysis using the transmission line model confirms that cathodic activation accelerates charge transport, enhancing the OER process. Furthermore, the cathodic activation strategy holds promise for improving the water oxidation performance of other MOFs such as Fe-HHTP, Co-HHTP, and Cu-HHTP.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ChemSusChem Asunto de la revista: QUIMICA / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ChemSusChem Asunto de la revista: QUIMICA / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania