Khan Ziyauddin, Vagin Mikhail, Crispin Xavier
Laboratory of Organic Electronics Department of Science and Technology Linköping University SE60174 Norrköping Sweden.
Adv Sci (Weinh). 2020 Jan 19;7(5):1902866. doi: 10.1002/advs.201902866. eCollection 2020 Mar.
In recent years, there has been an upsurge in the study of novel and alternative energy storage devices beyond lithium-based systems due to the exponential increase in price of lithium. Sodium (Na) metal-based batteries can be a possible alternative to lithium-based batteries due to the similar electrochemical voltage of Na and Li together with the thousand times higher natural abundance of Na compared to Li. Though two different kinds of Na-O batteries have been studied specifically based on electrolytes until now, very recently, a hybrid Na-air cell has shown distinctive advantage over nonaqueous cell systems. Hybrid Na-air batteries provide a fundamental advantage due to the formation of highly soluble discharge product (sodium hydroxide) which leads to low overpotentials for charge and discharge processes, high electrical energy efficiency, and good cyclic stability. Herein, the current status and challenges associated with hybrid Na-air batteries are reported. Also, a brief description of nonaqueous Na-O batteries and its close competition with hybrid Na-air batteries are provided.
近年来，由于锂价格呈指数级增长，对新型及替代锂基系统的储能装置的研究热潮兴起。钠基金属电池可能是锂基电池的一种替代选择，因为钠和锂具有相似的电化学电压，且钠的天然丰度比锂高数千倍。尽管到目前为止，基于电解质专门研究了两种不同类型的钠氧电池，但最近，一种混合钠空气电池相对于非水电池系统显示出独特优势。混合钠空气电池具有一个基本优势，即形成高度可溶的放电产物（氢氧化钠），这导致充放电过程的过电位低、电能效率高且循环稳定性好。本文报道了混合钠空气电池的现状及相关挑战。此外，还简要介绍了非水钠氧电池及其与混合钠空气电池的激烈竞争情况。
