Constructing a Multifunctional Interlayer toward Ultra-High Critical Current Density for Garnet-Based Solid-State Lithium Batteries

Min Gao; Zhinan Gong; Hongqiang LiHaibin ZhaoDaming ChenYaqing WeiDe LiYuanxun LiLiang YangYong Chen

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Constructing a Multifunctional Interlayer toward Ultra-High Critical Current Density for Garnet-Based Solid-State Lithium Batteries

机译：Constructing a Multifunctional Interlayer toward Ultra-High Critical Current Density for Garnet-Based Solid-State Lithium Batteries

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All-solid-state lithium batteries (ASSLBs), exhibiting great advantages of highenergy density and safety, are proposed to be the next generation energystorage system. However, the successful commercialization of garnet-basedASSLBs is hindered by the poor contact between solid-state electrolytes(Li_(6.25)Ga_(0.25)La_3Zr_2O_(12), LGLZO) and lithium anode, as well as low criticalcurrent density (CCD). Herein, an indium tin oxide (ITO) layer is preparedon LGLZO by ultrasonic spraying technique, where ITO reacts with moltenlithium to form a composite interlayer, consisting of Li_(13)In_3, Li_2O, and LiInSn.Experiments and density functional theory calculations demonstrate thatsuch a unique interlayer plays a multifunctional role in achieving simultaneouslybetter interface wettability, uniform Li deposition, and dendrite suppressionat Li/LGLZO interface. Consequently, the CCD of ITO-treated symmetriccell is increased to a record-high value of 12.05 mA cm~(?2) at room temperature,which is expected to promote practical application of ASSLBs. Moreover,the Li/ITO@LGLZO/Li cell exhibits a low interfacial resistance of only5.9 Ω cm~2 and performs stable electrochemical operations for over 2000 h at2 mA cm~(?2). The Li/ITO@LGLZO/LiFePO4 full cell also delivers superior electrochemicalperformances, demonstrating the efficiency of the ITO layer.

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来源
《Advanced functional materials》 |2023年第22期|2300319.1-2300319.8|共8页
作者
Min Gao; Zhinan Gong; Hongqiang LiHaibin ZhaoDaming ChenYaqing WeiDe LiYuanxun LiLiang YangYong Chen;
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作者单位

State Key Laboratory of Marine Resource Utilization in South China SeaSchool of Materials Science and EngineeringHainan Provincial Key Laboratory of Research on Utilization of Si-Zr-TiResourcesHainan UniversityHaikou 570228, P. R. China;

State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengdu 610054, P. R. China;

Guangdong Key Laboratory for Hydrogen Energy TechnologiesSchool of Materials Science and Hydrogen EnergyFoshan UniversityFoshan 528000, P. R. China;

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all-solid-state lithium batteries (ASSLBS); garnet electrolytes; interface modification; multifunctional composite layers; ultrasonic spray technology;

Constructing a Multifunctional Interlayer toward Ultra-High Critical Current Density for Garnet-Based Solid-State Lithium Batteries

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