Aqueous Electrochemical Energy Storage with a Mediator-Ion Solid Electrolyte,Advanced Energy Materials

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Aqueous Electrochemical Energy Storage with a Mediator-Ion Solid Electrolyte
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2017-01-06 08:06:02 , DOI: 10.1002/aenm.201602454
Xingwen Yu ₁ , Martha M. Gross ₁ , Shaofei Wang ₁ , Arumugam Manthiram ₁

Affiliation

This study presents a battery concept with a “mediator-ion” solid electrolyte for the development of next-generation electrochemical energy storage technologies. The active anode and cathode materials in a single cell can be in the solid, liquid, or gaseous form, which are separated by a sodium-ion solid-electrolyte separator. The uniqueness of this mediator-ion strategy is that the redox reactions at the anode and the cathode are sustained by a shuttling of a mediator sodium ion between the anolyte and the catholyte through the solid-state electrolyte. Use of the solid-electrolyte separator circumvents the chemical-crossover problem between the anode and the cathode, overcomes the dendrite-problem when employing metal-anodes, and offers the possibility of using different liquid electrolytes at the anode and the cathode in a single cell. The battery concept is demonstrated with two low-cost metal anodes (zinc and iron), two liquid cathodes (bromine and potassium ferricyanide), and one gaseous cathode (air/O₂) with a sodium-ion solid electrolyte. This novel battery strategy with a mediator-ion solid electrolyte is applicable to a wide range of electrochemical energy storage systems with a variety of cathodes, anodes, and mediator-ion solid electrolytes.

中文翻译：

介电离子固体电解质的水电化学储能

这项研究提出了带有“中介离子”固体电解质的电池概念，用于开发下一代电化学能量存储技术。单个电池中的活性阳极和阴极材料可以呈固态，液态或气态形式，并由钠离子固体电解质隔板隔开。这种介体离子策略的独特之处在于，阳极和阴极之间的介电钠离子通过固态电解质穿梭，从而维持了阳极和阴极的氧化还原反应。固体电解质隔板的使用避免了阳极和阴极之间的化学交叉问题，克服了使用金属阳极时的枝晶问题，并提供了在单个电池中在阳极和阴极使用不同液体电解质的可能性。₂）用钠离子固体电解质。具有介体离子固体电解质的这种新颖的电池策略适用于具有各种阴极，阳极和介体离子固体电解质的各种电化学储能系统。

更新日期：2017-06-08

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