Synthesis of hierarchical porous carbon from metal carbonates towards high-performance lithium storage. Issue 7 (16th February 2018)

• Record Type: Journal Article
• Authors: Liang, Chu; Liang, Sheng; Xia, Yang; Gan, Yongping; Fang, Libin; Jiang, Yinzhu; Tao, Xinyong; Huang, Hui; Zhang, Jun; Zhang, Wenkui
• Is Part Of: Green chemistry. Volume 20:Issue 7(2018)
• Page Start: 1484
• Page End: 1490
• Publication Date: 2018-02-16
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/c7gc02841e
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Hierarchical porous carbon (HPC) has become increasingly important in tackling global environmental and energy-related challenges. Abstract : Hierarchical porous carbon (HPC) has become increasingly important in tackling global environmental and energy-related challenges. However, its wide utilization is still limited by the complicated and environment-unfriendly synthesis process. Herein, we report a green and facile strategy to synthesize HPC from abundant metal carbonates without any emission of CO2 or/and noxious gases. The sponge-like HPC synthesized from reacting lithium carbonate (Li2 CO3 ) with lithium hydride (LiH) exhibits high specific surface area and porosity, enabling high-performance lithium storage. The Li2 CO3 -derived HPC achieves a reversible capacity of ∼1750 mA h g −1 at a current density of 0.2 A g −1, among the highest reversible lithium storage capacities for HPCs. Moreover, excellent cycling stability and superior rate performance are demonstrated with a high capacity of 505 mA h g −1 even at 4.0 A g −1 over 2000 stable cycles. Such a rational and environment-friendly strategy might pave the way for the large-scale synthesis and utilization of HPCs in high-performance energy storage.