A green electrochemical transformation of inferior coals to crystalline graphite for stable Li-ion storage. Issue 13 (12th March 2019)

• Record Type: Journal Article
• Authors: Zhu, Zhenglu; Zuo, Haibin; Li, Shijie; Tu, Jiguo; Guan, Wei; Song, Wei-Li; Zhao, Jun; Tian, Donghua; Jiao, Shuqiang
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 13(2019)
• Page Start: 7533
• Page End: 7540
• Publication Date: 2019-03-12
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta12412d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : With the increasing demand for the efficient utilization of global resources, a green strategy for the transformation of inferior coals to highly value-added products is demonstrated. Abstract : With the increasing demand for the efficient utilization of global resources, green strategies for the transformation of inferior coals to highly value-added products are largely required. In this study, a green approach was demonstrated for the conversion of inferior coals into crystalline graphite using a simple purification and high-efficiency electrochemical method. After being processed in the molten CaCl2 salt under 2.6 V at 950 °C for 6 h, the products presented a highly graphitic structure with high degree of graphitization. The as-prepared graphite was employed as a negative electrode material for lithium-ion batteries, delivering a highly reversible capacity of 510 mA h g −1 at 1C. High-performance lithium-ion storage represents an efficient green strategy to reuse inferior coals for conversion into value-added products via a more sustainable route.