Restoring garnet oxide electrolytes via ultra-fast sinteringOA
Garnet-type solid-state electrolytes(SSEs)are among the most promising electrolytes for solid-state lithium-metal batteries.However,the garnet electrolyte has inadequate stability in air,leading to the formation of lithium carbonate.This reduction in the lithium content in electrolytes can result in decreased ionic conductivity,increased interfacial resistance,and consequently,poor electrochemical performance.Here,we report a fast and effective method for recovering long-term stored garnet oxide.The lithium carbonate in long-term stored Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO)was completely removed by immersion in a LiOH solution followed by ultra-fast sintering.As a result,garnet SSEs can obtain higher ionic conductivity and lower electronic conductivity than their counterparts before treatment.In addition,an increased critical current density together with improved electrochemical performance of LiLiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)half-cells is also achieved for the recovered LLZTO.This work proposes a simple strategy for recycling garnet electrolytes for application in solidstate lithium-metal batteries.
Jiahao Feng;Chang Zhang;Tianyi Gao;Jinjiang Liang;Jiameng Yu;Luyao Wang;Wei Liu
School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,ChinaSchool of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,ChinaSchool of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,ChinaSchool of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,ChinaSchool of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,ChinaSchool of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,ChinaSchool of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China Shanghai Key Laboratory of High-resolution Electron Microscopy,ShanghaiTech University,Shanghai 201210,China
信息技术与安全科学
solid-state lithium-metal batterygarnet oxiderapid restorationultra-fast high-temperature sintering
《Journal of Advanced Ceramics》 2026 (1)
P.89-96,8
the Natural Science Foundation of Shanghai(No.24ZR1451200)the National Natural Science Foundation of China(Nos.92472119 and 52222311)the Development Fund for Schools of ShanghaiTech Universitysupported by the State Key Laboratory of New Ceramic Materials,Tsinghua University(No.KF202504)supported by the Center for High-resolution Electron Microscopy(ChEM)at ShanghaiTech University.
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