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Rechargeable Na-SO_2 Battery with Ethylenediamine Additive in Ether-Based Electrolyte

机译：具有乙二胺添加剂的可充电Na-SO_2电池在醚基电解质中

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摘要

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.
机译：可充电金属-O2电池引起了巨大的关注，因为它可以加速SO2固定/利用率并提供高能量密度。在此，通过Na 2 O 4的可逆形成/分解实现基于乙二胺（EDA）添加剂的基于醚基液体电解质的可充电Na-SO2电池。实验研究表明，EDA添加剂通过同时降低整体电极极化，增加完全放电容量，提高电池可循环性，提供三种益处。在电流密度为250 mA g（-1），电池与EDA添加剂的完全放电容量在没有EDA的情况下具有类似系统的两倍多。除了显着增强的容量之外，组装的NA-SO2电池还在200次循环后显示出优异的循环稳定性，这相当于总持续时间为1600小时。此外，借助于含SO 2的液体电解质的EDA强化Na阳极的耐腐蚀性。这项工作将为NA-SO2电池作为有前途的电池技术铺平了污染物的气体利用和储能。

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  • 来源
    《Advanced Functional Materials》 |2020年第28期|2002120.1-2002120.8|共8页
  • 作者

    Liu Xizheng; Ma Wenqing; Lei Xiaofeng; Zhang Shichao; Ding Yi;

  • 作者单位

    Tianjin Univ Technol Tianjin Key Lab Adv Funct Porous Mat Inst New Energy Mat & Low Carbon Technol Sch Mat Sci & Engn Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Tianjin Key Lab Adv Funct Porous Mat Inst New Energy Mat & Low Carbon Technol Sch Mat Sci & Engn Tianjin 300384 Peoples R China|Qilu Univ Technol Shandong Acad Sci Sch Mat Sci & Engn Jinan 250353 Peoples R China;

    Tianjin Univ Technol Tianjin Key Lab Adv Funct Porous Mat Inst New Energy Mat & Low Carbon Technol Sch Mat Sci & Engn Tianjin 300384 Peoples R China;

    Beihang Univ Sch Mat Sci & Engn Beijing 100191 Peoples R China;

    Tianjin Univ Technol Tianjin Key Lab Adv Funct Porous Mat Inst New Energy Mat & Low Carbon Technol Sch Mat Sci & Engn Tianjin 300384 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    ether-based electrolyte; ethylenediamine; Na-SO2 battery; Ru-rGO; SO2 utilization;

    机译：基于醚电解质;乙二胺;NA-SO2电池;RU-RGO;SO2利用;

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