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Balance of N-Doping Engineering and Carbon Chemistry to Expose Edge Graphitic N Sites for Enhanced Oxygen Reduction Electrocatalysis.
Lai, Qingxue; Zheng, Hongmei; Tang, Zeming; Bi, Da; Chen, Ningning; Liu, Xingjiang; Zheng, Jing; Liang, Yanyu.
Afiliación
  • Lai Q; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao St., Nanjing 210016, P. R. China.
  • Zheng H; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao St., Nanjing 210016, P. R. China.
  • Tang Z; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao St., Nanjing 210016, P. R. China.
  • Bi D; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao St., Nanjing 210016, P. R. China.
  • Chen N; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao St., Nanjing 210016, P. R. China.
  • Liu X; Science and Technology on Power Sources Laboratory, Tianjin Institute of Power Sources, No. 6 Huake 7 Road, Haitai Ave., Tianjin 300384, P. R. China.
  • Zheng J; Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, No.159 Longpan Road, Nanjing 210037, P. R. China.
  • Liang Y; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao St., Nanjing 210016, P. R. China.
ACS Appl Mater Interfaces ; 13(51): 61129-61138, 2021 Dec 29.
Article en En | MEDLINE | ID: mdl-34908397
Nitrogen-doped nanocarbon materials (NCMs) have been developed as promising metal-free oxygen reduction reaction (ORR) electrocatalysts. However, insufficient attention on the balance of N-doping engineering and carbon chemistry significantly suppressed the revelation of the real active configurations as well as the ORR mechanism for NCMs. Herein, 1,4-phenylenediurea (BDU) with multifunctional blocks was designed for the synthesis of NCMs, realizing synchronous manipulation of N-doping engineering and carbon chemistry. The good balance between N-doping engineering (especially graphitic edge N configurations) and carbon chemistry (including the specific surface area, porosity distribution, and graphitization degree) at a pyrolysis temperature of 1000 °C resulted in the best ORR performance for obtaining N-doped carbon nanorod (NCR) materials. A general descriptor χ was then proposed for evaluating the balance states between N-doping engineering and carbon chemistry. The prediction of the ORR performance of NCMs from their physical properties as well as searching for the optimal active configuration from the relationships between ORR performance and different configurations can be realized from such a practical descriptor, which can also be extended to other nanocarbon-based metal-free electrocatalytic reactions for deeply understanding their electrocatalytic mechanisms.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos
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: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos