Synthesis of hierarchical porous carbon from metal carbonates towards high-performance lithium storage
| Autor: | Zhang Wenkui, Sheng Liang, Yongping Gan, Chu Liang, Libin Fang, Hui Huang, Yinzhu Jiang, Xinyong Tao, Yang Xia, Jun Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Lithium carbonate chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pollution Energy storage 0104 chemical sciences Metal chemistry.chemical_compound chemistry Chemical engineering Lithium hydride Specific surface area visual_art visual_art.visual_art_medium Environmental Chemistry Lithium 0210 nano-technology Porosity Carbon |
| Zdroj: | Green Chemistry. 20:1484-1490 |
| ISSN: | 1463-9270 1463-9262 |
| DOI: | 10.1039/c7gc02841e |
| Popis: | 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 (Li2CO3) with lithium hydride (LiH) exhibits high specific surface area and porosity, enabling high-performance lithium storage. The Li2CO3-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. |
| Databáze: | OpenAIRE |
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