Coal Char Derived Few-Layer Graphene Anodes for Lithium Ion Batteries

Photonics

Dan Wang¹  Santosh H. Vijapur¹ 

[1] Center for Electrochemical Engineering Research, Chemical and Biomolecular Engineering Department, Ohio University, Athens, OH 45701, USA;

关键词: graphene;    coal char;    coal electrolysis;    chemical vapor deposition;    lithium ion batteries;   

DOI  :  10.3390/photonics1030251

来源: mdpi

【 摘 要 】

Few-layer graphene films were synthesized through chemical vapor deposition technique using coal char as solid carbon source. Raman spectroscopy, X-ray diffraction, transmission electron microscopy, and selected area electron diffraction were used to characterize the graphene films. The electrochemical performance of the coal char derived few layer graphene anodes for lithium ion batteries was investigated by charge/discharge curves and discharge capacity at different current densities. The graphene anode maintained the reversible capacity at ~0.025, 0.013, and 0.007 mAh/cm² at a current density of 10, 30, and 50 µA/cm², respectively. The coal char derived graphene anodes show potential applications in thin film batteries for nanoelectronics.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.