Inorganic Chemicals Industry ›› 2024, Vol. 56 ›› Issue (11): 30-38.doi: 10.19964/j.issn.1006-4990.2024-0151

• New energy battery materials • Previous Articles     Next Articles

Research progress and industrialization challenge of coal-based hard carbon anode materials for sodium ion batteries

XU You(), MA Luxiang, HAI Chunxi, DONG Shengde, XU Qi, HE Xin, PAN Wencheng, GAO Yawen, CHEN Ju, SUN Yanxia(), ZHOU Yuan()   

  1. College of Materials and Chemistry & Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China
  • Received:2024-03-15 Online:2024-11-10 Published:2024-04-30
  • Contact: SUN Yanxia, ZHOU Yuan E-mail:xuyou@stu.cdut.edu.cn;sunyanxia23@cdut.edu.cn;yzhou712@sina.com

Abstract:

Sodium-ion batteries have been widely used in smart grid and energy storage fields,but their development is limited by the factors such as large irreversible capacity,high redox potential and poor cycle performance of anode materials.Hard carbon materials,especially coal-based hard carbon anode materials,are considered to be the most potential anode materials for sodium-ion batteries because of their advantages such as large layer spacing,short-range carbon microcrystalline structure,low cost,rich resources and low working potential.However,they have some problems such as low capacity,poor cycling performance and difficulty in impurity removal.Therefore,the importance of coal-based hard carbon anode materials for sodium ion batteries and the preparation and modification methods of coal-based hard carbon were reviewed.The effects of modification strategies such as activation,heteroatom doping,pre-oxidation,composite carbon and mechanical ball milling on their electrochemical properties were described.Finally,the problems faced in industrialization challenges and corresponding solutions were put forward,and the development direction of coal-based hard carbon anode materials was prospected.

Key words: sodium ion battery, anode material, coal-based hard carbon, modification method, industrialization challenge

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