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Porous pyrrhotite Fe7S8 nanowire/SiOx/nitrogen-doped carbon matrix for high-performance Li-ion-battery anodes.
Guo, Xiaotian; Wang, Sibo; Yang, Biao; Xu, Yuxia; Liu, Yong; Pang, Huan.
Afiliación
  • Guo X; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China.
  • Wang S; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China.
  • Yang B; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China.
  • Xu Y; Guangling College, Yangzhou University, Yangzhou 225009, Jiangsu, PR China.
  • Liu Y; Henan Key Laboratory of Non-Ferrous Materials Science & Processing Technology, Henan University of Science and Technology, Luoyang, PR China.
  • Pang H; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China. Electronic address: huanpangchem@hotmail.com.
J Colloid Interface Sci ; 561: 801-807, 2020 Mar 01.
Article en En | MEDLINE | ID: mdl-31767394
Iron sulfides, known as attractive anode materials for rechargeable lithium-ion batteries, have been extensively studied. Nevertheless, low electrical conductivity and huge volume expansion of iron sulfides hinder its practical applications. Herein, a novel method was developed to synthesize ternary porous Fe7S8 nanowires/SiOx/nitrogen-doped carbon matrix by facile hydrothermal method and subsequent sulfidation derived from bamboo leaves. The SiOx/nitrogen-doped carbon matrix can ensure the growth of nanowires, maintain the structural stability, improve the conductivity and provide improved capacity of Fe7S8. The 3D matrix structure and porous properties of Fe7S8 nanowires effectively relieve the volume change upon the insertion/extraction of Li+. The Fe7S8/SiOx/nitrogen-doped carbon anode exhibited a superior discharge capacity of 1060.2 mA h g-1 at 200 mA g-1 along with good long cycling performance of 415.8 mA h g-1 at the 1000th cycle at 5 A g-1. The facile strategy for preparing ternary Fe7S8 composites with superb LIB electrochemical performances demonstrates a great potential in electrochemical energy storage.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2020 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2020 Tipo del documento: Article Pais de publicación: Estados Unidos