首页|High Ion-Selectivity of Garnet Solid Electrolyte Enabling Separation of Metallic Lithium

High Ion-Selectivity of Garnet Solid Electrolyte Enabling Separation of Metallic Lithium

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Ionic selectivity is of significant importance in both fundamental science and practical applications.For instance,an ion-selective material allows the passage of a particular kind of ions while blocking the others,which could be used for purification of materials.Herein,the Li-ion-selectivity of a garnet-type solid electrolyte is discussed by comparing the difference of activation energy between different ions migrating in solids.The high ion-selectivity is confirmed by harvesting high-purity metallic lithium(99.98 wt％)from low-lithium-purity sources(80 wt％)at a moderate temperature(190 ℃).This gives it huge potential in separating lithium with impurities especially alkali and alkali-earth elements.The cost of metallic lithium production is only 25％of the international lithium price.The proposed electrochemical metallic lithium separating method is advantageous compared with the traditional process in terms of efficiency,safety,and cost.

ion separatingionic selectivitylithium metalsolid electrolyte

Haitian Zhang、Jialiang Lang、Kai Liu、Yang Jin、Kuangyu Wang、Yulong Wu、Siqi Shi、Li Wang、Hong Xu、Xiangming He、Hui Wu

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Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 10084,China

School of Materials Science and Engineering,State Key Laboratory of New Ceramics and Fine Processing,Tsinghua University,Beijing 10084,China

School of New Energy,State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China

School of Electrical Engineering,Research Center of Grid Energy Storage and Battery Application,Zhengzhou University,Zhengzhou 450001,China

School of Materials Science and Engineering Shanghai University,Shanghai 200444,China

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Basic Science Center Program of the National Natural Science Foundation of China(NSFC)Beijing Natural Science Foundation

51788104JQ19005

2023

10.1002/eem2.12425

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(6)
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