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Rechargeable Na–SO2 Battery with Ethylenediamine Additive in Ether‐Based Electrolyte
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2020-05-25 , DOI: 10.1002/adfm.202002120 Xizheng Liu 1 , Wenqing Ma 1, 2 , Xiaofeng Lei 1 , Shichao Zhang 3 , Yi Ding 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2020-05-25 , DOI: 10.1002/adfm.202002120 Xizheng Liu 1 , Wenqing Ma 1, 2 , Xiaofeng Lei 1 , Shichao Zhang 3 , Yi Ding 1
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Rechargeable metal–SO2 batteries have drawn tremendous attention because it can accelerate SO2 fixation/utilization and offer high energy density. Herein, a rechargeable Na–SO2 battery based on an ether‐based liquid electrolyte with an ethylenediamine (EDA) additive is realized via the reversible formation/decomposition of Na2S2O4. Experimental investigations reveal that the EDA additive provides three benefits by simultaneously decreasing the overall electrode polarization, increasing the full discharge capacity, and improving battery cyclability. At a current density of 250 mA g−1, the full discharge capacity of the battery with the EDA additive is more than twice of a similar system in the absence of EDA. In addition to the significantly enhanced capacity, the as‐assembled Na–SO2 battery demonstrates excellent cyclic stability after 200 cycles, which is equivalent to a total duration of 1600 h. Moreover, the corrosion resistance of Na anode is strengthened with the aid of EDA in the SO2‐containing liquid electrolyte. This work will pave the way for Na–SO2 batteries as a promising battery technology toward both pollutant gas utilization and energy storage.
中文翻译：
乙二胺添加剂的乙二胺可充电Na-SO2电池
可充电金属SO 2电池引起了极大的关注，因为它可以加速SO 2的固定/利用并提供高能量密度。在此，通过可逆的Na 2 S 2 O 4形成/分解，实现了基于醚基液体电解质和乙二胺（EDA）添加剂的Na-SO 2可充电电池。实验研究表明，EDA添加剂可通过同时降低整体电极极化，增加全放电容量并改善电池可循环性而提供三个好处。在250 mA g -1的电流密度下，使用EDA添加剂的电池的完全放电容量是不使用EDA的同类系统的两倍以上。除了显着提高的容量外，组装后的Na–SO 2电池在200个循环后表现出出色的循环稳定性，这相当于1600小时的总持续时间。此外，借助EDA在含SO 2的液体电解质中增强了Na阳极的耐腐蚀性。这项工作将为Na-SO 2电池铺平道路，将其作为一种有前途的电池技术用于污染气体的利用和能量存储。
更新日期：2020-07-09
中文翻译：
乙二胺添加剂的乙二胺可充电Na-SO2电池
可充电金属SO 2电池引起了极大的关注，因为它可以加速SO 2的固定/利用并提供高能量密度。在此，通过可逆的Na 2 S 2 O 4形成/分解，实现了基于醚基液体电解质和乙二胺（EDA）添加剂的Na-SO 2可充电电池。实验研究表明，EDA添加剂可通过同时降低整体电极极化，增加全放电容量并改善电池可循环性而提供三个好处。在250 mA g -1的电流密度下，使用EDA添加剂的电池的完全放电容量是不使用EDA的同类系统的两倍以上。除了显着提高的容量外，组装后的Na–SO 2电池在200个循环后表现出出色的循环稳定性，这相当于1600小时的总持续时间。此外，借助EDA在含SO 2的液体电解质中增强了Na阳极的耐腐蚀性。这项工作将为Na-SO 2电池铺平道路，将其作为一种有前途的电池技术用于污染气体的利用和能量存储。
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