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Development of high-capacity flexible sodium manganese periodate batteries with dual polymer electrolytes
Materials Today Communications ( IF 3.8 ) Pub Date : 2020-11-30 , DOI: 10.1016/j.mtcomm.2020.101928
Zhiqian Wang , Emine S. Karaman , Xianyang Meng , Giuseppe Di Benedetto , James L. Zunino , Somenath Mitra

We present the development of a dual-electrolyte, flexible battery based on sodium manganese periodate-zinc system. H3PO4-KCl quasi-solid dual electrolytes separated by an anion-exchange-membrane maintained the desired pH at electrodes and blocked unwanted ion movements. Poly(acrylic acid) based quasi-solid electrolytes were optimized to fortify the electrodes, increase electrode flexibility, eliminate free-flow liquids, and enhance battery performance. Anode electrolyte pH adjustment enhanced ionic conductivity and reduced zinc corrosion. The nano-grade NaMnIO6 showed a specific capacity of 650 mA h g−1, approximately 81 % of its theoretical capacity even when cells are bent. The capacity reported here is at least 80 % higher than other flexible battery reported before.



中文翻译:

具有双聚合物电解质的高容量柔性高碘酸钠锰电池的开发

我们介绍了基于高碘酸钠锰锌系统的双电解质柔性电池的开发。通过阴离子交换膜分离的H 3 PO 4 -KCl准固体双电解质在电极上保持所需的pH值,并阻止了不希望的离子运动。对基于聚丙烯酸的准固体电解质进行了优化,以增强电极强度,增加电极柔韧性,消除自由流动的液体并增强电池性能。阳极电解液的pH调节可增强离子电导率并减少锌腐蚀。纳米级NaMnIO 6的比容量为650 mA hg -1甚至在电池弯曲时也只能达到其理论容量的81%。此处报告的容量比以前报告的其他柔性电池至少高80%。

更新日期:2020-12-11
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