期刊
ADVANCED ENERGY MATERIALS
卷 11, 期 11, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202003640
关键词
battery behaviors; carbon; ion storage/release mechanisms; K-ion batteries; Na-ion batteries
类别
资金
- National Natural Science Foundation of China [51761145047]
- Fundamental Research Funds for the Central Universities [KG16044301]
This article discusses the development status and comparative analysis of carbon anode materials for SIBs and PIBs, emphasizing the importance of understanding the storage/release mechanisms of Na+/K+ in carbon materials for achieving ideal performance.
As novel post lithium-ion batteries, sodium-ion batteries/potassium-ion batteries (SIBs/PIBs) are emerging and show bright prospect in large-scale energy storage applications due to abundant Na/K resources. Further benefits of this technology include, its low cost, chemical inertness and safety. Extensive research findings have demonstrated that carbon-based materials are promising candidates for both SIBs and PIBs. Although the two alkali-ion batteries have similar internal components and electrochemical reaction mechanisms, in carbon-based materials the storage/release behaviors of Na+ and K+ are not exactly the same. Therefore, a comprehensive comparison of Na+/K+ storage behaviors in carbon anode materials is lacking. It is absolutely imperative to understand these mechanisms more clearly to achieve ideal performance. Herein, three potential Na+/K+ storage/release behaviors are discussed, which are i) intercalation/deintercalation mechanism, ii) adsorption/desorption mechanism, and iii) pore-filling mechanism. This review not only attempts to summarize the development status of carbon anode materials (graphite, graphene, hard carbon and soft carbon), but also provides a comprehensive comparison (mechanism, capacity, rate capability, diffusion coefficient, cyclability, potassiation/sodiation potential) between SIBs and PIBs. Finally, critical issues and perspectives are discussed to demonstrate possible development directions for carbon anode materials for SIBs and PIBs.
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