Preparation of Advanced Carbon Anode Materials from Mesocarbon Microbeads for Use in High C-Rate Lithium Ion Batteries

Materials

Ming-Dar Fang¹  Tsung-Han Ho¹  Jui-Pin Yen²  Yu-Run Lin²  Jin-Long Hong³  She-Huang Wu⁴  Jiin-Jiang Jow¹ 

[1]Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan

[2] E-Mails:

[3]China Steel Chemical Corporation, Kaohsiung 80245, Taiwan

[4] E-Mails:

[5]Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan

[6] E-Mail:

[7]Department of Materials Engineering, Tatung University, Taipei 80104, Taiwan

[8] E-Mail:

关键词: mesocarbon microbeads;    soft carbon;    anode materials;    high C-rate;    lithium ion battery;    charge rate capability;   

DOI  :  10.3390/ma8063550

来源: mdpi

【 摘 要 】

Mesophase soft carbon (MSC) and mesophase graphite (SMG), for use in comparative studies of high C-rate Lithium Ion Battery (LIB) anodes, were made by heating mesocarbon microbeads (MCMB) at 1300 °C and 3000 °C; respectively. The crystalline structures and morphologies of the MSC, SMG, and commercial hard carbon (HC) were investigated by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and Raman spectroscopy. Additionally, their electrochemical properties, when used as anode materials in LIBs, were also investigated. The results show that MSC has a superior charging rate capability compared to SMG and HC. This is attributed to MSC having a more extensive interlayer spacing than SMG, and a greater number of favorably-oriented pathways when compared to HC.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.