Quasi-Decoupled Solid–Liquid Hybrid Electrolyte for Highly Reversible Interfacial Reaction in Aqueous Zinc–Manganese Battery

Yicai Pan; Zhexuan Liu; Sainan LiuLipin QinYongqiang YangMiao ZhouYanyan SunXinxin CaoShuquan LiangGuozhao Fang

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Quasi-Decoupled Solid–Liquid Hybrid Electrolyte for Highly Reversible Interfacial Reaction in Aqueous Zinc–Manganese Battery

机译：Quasi-Decoupled Solid–Liquid Hybrid Electrolyte for Highly Reversible Interfacial Reaction in Aqueous Zinc–Manganese Battery

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Aqueous zinc–manganese batteries with low cost, reliable safety, and considerableenergy density, show promise for grid-scale storage. Their durable operationis highly dependent on the reversibility and stability of both electrodeinterfaces, which is limited by the different requirements of the interfaces ofmanganese-based cathodes and zinc anodes. Here, a quasi-decoupled solid–liquid hybrid electrolyte is proposed, which demonstrates good compatibilityand high reversibility for both interfaces with different electrolyte environments,showing quasi-decoupling characteristics. Such a hybrid electrolytecan endow the anode interface with abundant favorable nucleation sites forachieving uniform zinc platting/stripping, as well as limit the presence of freeH_2O molecules, to suppress side-reactions. This electrolyte is also adapted toa reversible and stable MnO_2/Mn~(2+) manganese deposition/dissolution reactionat the cathode interface by restricting OH?/H+ ion diffusion, preventingformation of irreversible electrochemically inert MnOOH. As a result, thequasi-decoupled solid–liquid hybrid electrolyte enables Zn‖Zn cycling for morethan 500 h, and a specific capacity of a Zn‖α-MnO_2 battery up to 348 mAh g~(?1)at 0.2 A g~(?1). It also allows 87 capacity retention after 500 cycles at 0.5 A g~(?1).This work provides a new insight into electrolyte design that focuses on thedifferent requirements of differing electrode interfaces.

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来源
《Advanced energy materials》 |2023年第11期|2203766.1-2203766.11|共11页
作者
Yicai Pan; Zhexuan Liu; Sainan LiuLipin QinYongqiang YangMiao ZhouYanyan SunXinxin CaoShuquan LiangGuozhao Fang;
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作者单位

School of Materials Science and EngineeringKey Laboratory of Electronic Packaging and AdvancedFunctional Materials of Hunan ProvinceCentral South UniversityChangsha 410083, P. R. China;

School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083, P. R. China;

Office of Scientific Research ManagementGuangxi University of Science and TechnologyLiuzhou, Guangxi 545006, P. R. ChinaCollege of Mechanical EngineeringHunan Institute of Science and TechnologyYueyang 414000, P. R. China;

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hybrid electrolytes; interfacial reversibility; interfacial stability; quasidecoupled electrolytes; zinc–manganese batteries;

Quasi-Decoupled Solid–Liquid Hybrid Electrolyte for Highly Reversible Interfacial Reaction in Aqueous Zinc–Manganese Battery

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