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N, F Co-Doped Carbon Material Self-Supporting Cathode for High-Performance Lithium-Oxygen Batteries.
Sun, Guangting; Fu, Yaning; Li, Jie; Ma, Shiyu; Lu, Youcai; Liu, Qing-Chao.
Afiliación
  • Sun G; Zhengzhou University, The College of Chemistry, CHINA.
  • Fu Y; Zhengzhou University, The College of Chemistry, CHINA.
  • Li J; Zhengzhou University, The College of Chemistry, CHINA.
  • Ma S; Henan University of Engineering, School of Chemical and Printing-Dyeing Engineering, CHINA.
  • Lu Y; Zhengzhou University, The College of Chemistry, CHINA.
  • Liu QC; Zhengzhou University, College of Chemistry and Molecular Engineering, No. 100 science boulevard in zhengzhou, henan province, CHINA.
ChemSusChem ; : e202401644, 2024 Sep 19.
Article en En | MEDLINE | ID: mdl-39299914
ABSTRACT
The Li-O2 battery has emerged as a promising energy storage system due to its exceptionally high theoretical energy density of 3500 Wh kg-1. However, the sluggish kinetics associated with the formation and decomposition of discharge product Li2O2 poses several challenges in Li-O2 batteries, including excessive overpotential, limited rate performance, and reduced actual specific energy. Consequently, the development of cost-effective cathode catalysts with enhanced catalytic activity and long-term stability represents a viable approach to address these challenges. In this study, commercial melamine foam is utilized as a precursor material which was subjected to pyrolysis at elevated temperatures with PVDF to synthesize N,F co-doped self-supporting carbon cathode (NF-NSC). Remarkably, thanks to the synergistic effects of N, F heteroatomic in conjunction with the inherent three-dimensional reticular porous structure, NF-NSC exhibited enhanced electrochemical performance when utilized in Li-O2 batteries. Specifically, the NF-NSC cathode demonstrated an impressive discharge specific capacity of up to 35204 mAh g-1 alongside a low over-potential (0.86 V) and excellent cycling stability (146 cycles).
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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