摘要/Abstract
钠硒电池中硒正极导电率高(1×10–3 S/m), 体积比容量高(3253 mAh/cm3), 而钠负极原材料资源丰富, 成本低廉, 在基站式储能方面具有一定优势. 但是, 循环过程中硒正极的穿梭效应及体积变化等问题极大限制了钠硒电池的发展. 本综述总结了钠硒电池的基本原理和现存难题, 并详细介绍了其研究进展, 最后展望了钠硒电池的未来发展方向, 以期为钠硒电池的进一步研究提供新的思路.
关键词: 钠硒电池, 穿梭效应, 基站式储能, 正极材料
Sodium-selenium batteries show some advantages in stationary energy storage, benefitting from selenium cathode of high conductivity (1×10–3 S/m), high volume-specific capacity (3253 mAh/cm3), as well as sodium anode of abundant resources and low cost. However, the serious shuttle effect and volume change of selenium cathode greatly limit the further development. Herein, basic mechanism and current problems of sodium-selenium batteries are summarized, and the current research progress are discussed in detail. In end, future development of sodium-selenium is proposed, in order to provide some new perspectives.
Key words: sodium-selenium battery, shuttle effect, stationary energy storage, cathode material
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