High-Capacity Hard Carbon Pyrolyzed from Subbituminous Coal as Anode for Sodium-Ion Batteries
| Autor: | Jiangfeng Qian, Lifen Xiao, Xinping Ai, An-Hui Lu, Haiyan Lu, Yuliang Cao, Shaofa Sun, Hanxi Yang |
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| Rok vydání: | 2019 |
| Předmět: |
Bituminous coal
Materials science Carbonization business.industry geology.rock_type geology Energy Engineering and Power Technology Sodium-ion battery chemistry.chemical_element Anode chemistry Chemical engineering Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Coal Electrical and Electronic Engineering business Carbon Pyrolysis Faraday efficiency |
| Zdroj: | ACS Applied Energy Materials. 2:729-735 |
| ISSN: | 2574-0962 |
| DOI: | 10.1021/acsaem.8b01784 |
| Popis: | A pyrolyzed subbituminous carbon is synthesized through a simple one-step carbonization process as low-cost and high-capacity anode for sodium-ion batteries (SIB). The pyrolyzed subbituminous carbon, SHC-1300 anode shows high Na storage capacity of 291 mA h g–1 at 20 mA g–1 and high initial Coulombic efficiency of 79.5%, as well as stable cycling performance, exhibiting a promising alternative anode for affordable and high-performance SIB. Furthermore, according to the investigation of the electrochemical performance and structural characterizations, the SHC-1300 pyrolyzed from subbituminous coal with flexible structure demonstrates a better electrochemical performance compared with the BHC-1300 pyrolyzed from bituminous coal with rigid structure. The sodium storage mechanism and structural evolution reported in this work may give a new prospect for the selection of pyrolyzed carbon materials for high-performance sodium-ion batteries. |
| Databáze: | OpenAIRE |
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