摘要
钠离子电池作为一种新型的化学电源,因钠资源储量丰富、成本低廉等优势,在规模储能领域具有应用前景,近年来受到了人们的广泛关注.为了获得比能量高、循环寿命长和快速充放电能力强的先进钠离子电池,人们正致力于开发比容量高、循环性能好和倍率性能佳的储钠电极材料和离子电导率高、电化学窗口宽的功能电解液,并取得了重要进展.目前,有前景的正极材料主要有高容量的层状氧化物、高电位的氟磷酸盐和长寿命的磷酸盐;可用的负极材料主要包括循环稳定性强的钛基层状氧化物和碳材料、比容量大的金属/非金属单质和低成本的金属化合物;有效的功能电解液有酯类电解液和醚类电解液.本综述详细总结了上述几类电极材料和电解液的最新研究进展,重点介绍了它们的电化学性质、科学难题及解决策略.
Sodium ion batteries （SIBs） as a new chemical power source have recently attracted a great attention for large-scale energy storage owing to the abundance and low cost of sodium resources. In order to achieve advanced SIBs with high specific energy, long cycling lifetime and fast charge/discharge ability, efforts have been devoted to developing advanced electrode materials with large specific capacity, robust cycling stability and good rate capability, as well as functional electrolytes with high ion-conductivity and wide electrochemical window. Promising cathode materials include high-capacity layered oxides, high-potential fluorophosphates and long-lifetime phosphates. Available anode materials consist of highly stable Ti-based layered oxides and carbon materials, high-capacity elemental metals/non-metals and low-cost metal-based compounds. Effective electrolytes involve ester-based electrolytes and ether-based electrolytes. This review summarizes the recent advance of electrode materials and electrolytes for SIBs, mainly focusing on their electrochemical properties, existing challenges and resolution strategies.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2017年第2期154-162,共9页
Acta Chimica Sinica
基金
先进能源材料化学创新团队滚动支持(IRT13R30)
国家自然科学基金(21421001)资助~~
关键词
钠离子电池
正极材料
负极材料
电解液
sodium ion batteries
cathode materials
anode materials
electrolytes
