Boosting the ultrahigh initial coulombic efficiency of porous carbon anodes for sodium-ion batteries via in situ fabrication of a passivation interface
| العنوان: | Boosting the ultrahigh initial coulombic efficiency of porous carbon anodes for sodium-ion batteries via in situ fabrication of a passivation interface |
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| المؤلفون: | Minghao Zhang, Chuan Wu, Feng Wu, Ying Bai, Yu Li, Zhaohua Wang |
| المصدر: | Journal of Materials Chemistry A. 9:10780-10788 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Passivation, Renewable Energy, Sustainability and the Environment, chemistry.chemical_element, 02 engineering and technology, General Chemistry, Electrolyte, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, 0104 chemical sciences, Carboxymethyl cellulose, Anode, chemistry, Chemical engineering, Specific surface area, medicine, General Materials Science, 0210 nano-technology, Carbon, Faraday efficiency, medicine.drug |
| الوصف: | Porous carbon materials are regarded as one of the most promising candidates for sodium-ion batteries (SIBs) due to their fast sodium storage performance. However, the inadequate initial coulombic efficiency (ICE) resulting from the large specific surface area still hinders the commercialization of porous carbon anodes. Thus, it is important to synthesize porous carbon anodes with high electrochemical performance and improved ICE. Here we prepare a nitrogen and oxygen rich porous carbon material (NOPC) and construct a uniform passivation layer using a sodium carboxymethyl cellulose (CMC) binder on the surface of the NOPC material. The uniform passivation layer effectively deactivates the functional groups and suppresses the decomposition of electrolytes, resulting in an excellent ICE of 90%, which is ultrahigh and competitive among the reported carbon-based anodes in SIBs. Specifically, the as-prepared porous carbon anode delivers a reversible capacity of 191.7 mA h g−1 after 1000 cycles at 10 A g−1 with a capacity retention of 90%. This work suggests a general method to improve the ICE of a carbon material and hopefully facilitates the commercialization process of SIBs. |
| تدمد: | 2050-7496 2050-7488 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::3a6dae1f6d7b457a86df7d8a8456245eTest https://doi.org/10.1039/d1ta00845eTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........3a6dae1f6d7b457a86df7d8a8456245e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20507496 20507488 |
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