硬碳储钠负极材料研究进展

Research progress of hard carbon sodium storage anode materials

钠离子电池因其优异的低温性能、成本低和安全性高,有潜力在电动自行车和储能领域取代锂离子电池。然而,开发低成本、高可逆容量和优异循环稳定性的钠离子电池负极材料成为限制钠离子电池进一步发展的因素。硬碳材料因其丰富的原料来源、低廉的成本、易于获取、高碳产率、环境友好性以及含有多种元素等特点,受到了业界的广泛关注。为开发高性能硬碳材料,探讨了硬碳材料储钠机制,分析了前驱体选择和微观结构对硬碳材料性能的影响,总结了硬碳负极的研究现状,展望了硬碳材料在钠离子电池中的应用前景。

Sodium ion batteries have the potential to replace lithium-ion batteries in the fields of electric bicycles and energy storage due to their excellent low-temperature performance,low cost,and high safety.However,the development of low-cost,high reversible capacity,and excellent cycling stability sodium ion battery negative electrode materials has become a limiting factor for the further development of sodium ion batteries.Hard carbon materials have attracted wide spread attention in the industry due to their abundant raw material sources,low cost,easy accessibility,high carbon yield,environmental friendliness,and the presence of multiple elements.To develop high-performance hard carbon materials,the sodium storage mechanism of hard carbon materials was explored,the influence of precursor selection and microstructure on performance was analyzed,the research status of hard carbon negative electrodes was summarized,and the application prospects of hard carbon materials in sodium ion batteries were discussed.