| 石榴石型固态电解质Li7La3Zr2O12的改性研究现状 |
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| 引用本文： | 李金瑶,董生德,马路祥,周园.石榴石型固态电解质Li7La3Zr2O12的改性研究现状[J].硅酸盐通报,2022,41(8):2871-2878. |
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| 作者姓名： | 李金瑶 董生德 马路祥 周园 |
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| 作者单位： | 成都理工大学材料与化学化工学院,成都 610059 |
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| 摘 要： | 固态电解质是高安全性、高能量密度的全固态锂电池的核心部件,其典型代表Li7La3Zr2O12(LLZO)具有高离子电导率、高机械强度、高电化学稳定性、低界面阻抗以及对锂金属负极良好的稳定性等优势,是科研人员重点关注的对象之一,但与液态电解质相比,目前LLZO仍存在低离子电导率和与电极固-固界面接触等问题。本文主要简介了LLZO的晶体结构、改性方式等对其离子电导率及界面阻抗的影响,同时对LLZO现存的问题进行了总结,对LLZO的未来发展方向进行了展望,为探索全固态锂电池的实际生产应用提供理论指导。
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| 关 键 词： | 固态电解质 Li7La3Zr2O12 全固态锂电池 晶体结构 离子电导率 界面阻抗 |
| 收稿时间： | 2022-04-20 |
Recent Progress on Modification of Garnet Li7La3Zr2O12 Solid-State Electrolyte |
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| LI Jinyao,DONG Shengde,MA Luxiang,ZHOU Yuan.Recent Progress on Modification of Garnet Li7La3Zr2O12 Solid-State Electrolyte[J].Bulletin of the Chinese Ceramic Society,2022,41(8):2871-2878. |
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| Authors: | LI Jinyao DONG Shengde MA Luxiang ZHOU Yuan |
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| Affiliation: | College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | Solid-state electrolyte is the core component of all-solid-state lithium battery with the characteristics of high safety and high energy density. The typical representative Li7La3Zr2O12 (LLZO) has been paid extensive attention by researchers due to its high ionic conductivity, high mechanical strength, high electrochemical stability, low interfacial impedance, and good stability for lithium metal anodes. However, compared to liquid-state electrolytes, problems such as lower ionic conductivity and less contact with the solid-solid interface of electrodes in LLZO still exist. This research mainly introduced effects of the crystal structure and modification method of LLZO on its performances of ionic conductivity and interface impedance. Existing problems of LLZO were summarized, and future development directions were prospected. This research provides theoretical guidance for the practical production and application of all-solid-state lithium batteries. |
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| Keywords: | solid-state electrolyte Li7La3Zr2O12 all-solid-state lithium battery crystal structure ionic conductivity interface impedance |
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