文献类型：期刊文献

英文题名：Catalytic Graphitization of Anthracite as an Anode for Lithium-Ion Batteries

作者：Wang, Tao[1];Wang, Yongbang[1];Cheng, Guo[1];Ma, Cheng[1];Liu, Xiaojun[1];Wang, Jitong[1,2];Qiao, Wenming[1,2];Ling, Licheng[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2020

卷号：34

期号：7

起止页码：8911

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20204109319863);WOS:【SCI-EXPANDED(收录号:WOS:000551544900099)】；

基金：This work is partly supported by the National Natural Science Foundation of China (nos. U1710252, 21978097), the Young Elite Scientists Sponsorship Program by CAST (2017QNRC001), and the Fundamental Research Funds for the Central Universities (50321 0419 18013, 50321041917001).

语种：英文

外文关键词：Graphitization - Ions - Anthracite - Praseodymium compounds - High temperature applications - Cerium oxide - Catalysts - Graphite - Lithium-ion batteries

摘要：Synthetic graphite is an ideal anode material, which could replace the natural graphite for Li-ion batteries. However, high-temperature graphitization makes the process costly and energy-intensive, which impedes its larger-scale production and commercial applications. Herein, synthetic graphite was prepared from anthracite via catalytic graphitization using H3BO3, La2O3, Pr6O11, and CeO2 as catalysts. Results show that the catalysts could decrease the graphitization temperature from 2800 to 2600 degrees C and improve the regularity of graphite microcrystals. The synthetic graphite graphitized using La2O3 as a catalyst has higher degree of graphitization and regular graphite layers, which could promote the fast diffusion of Li+/e(-). Therefore, the synthetic graphite delivers an outstanding electrochemical performance with high reversible capacities of 337.2 mA h.g(-1) at 0.2 C. Moreover, the synthetic graphite shows superior rate performance and long charge/discharge life with a reversible capacity of over 89.2% after 500 cycles at 2 C. Therefore, the excellent electrochemical performance verifies a potential feasibility for the production of synthetic graphite materials from anthracite coal in a large scale for high-performance anodes in lithium-ion batteries.