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Critical Current Density in Solid-State Lithium Metal Batteries: Mechanism, Influences, and Strategies

机译：固态锂金属电池中的临界电流密度：机制，影响和策略

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摘要

Solid-state lithium (Li) metal batteries (SSLMBs) have become a research hotspot in the energy storage field due to the much-enhanced safety and high energy density. However, the SSLMBs suffer from failures including dendrite-induced short circuits and contact-loss-induced high impedance, which are highly related to the Li plating/stripping kinetics and hinder the practical application of SSLMBs. The maximum endurable current density of lithium battery cycling without cell failure in SSLMB is generally defined as critical current density (CCD). Therefore, CCD is an important parameter for the application of SSLMBs, which can help to determine the rate-determining steps of Li kinetics in solid-state batteries. Herein, the theoretical and practical meanings for CCD from the fundamental thermodynamic and kinetic principles, failure mechanisms, CCD identifications, and influence factors for improving CCD performances are systematically reviewed. Based on these fundamental understandings, a series of strategies and outlooks for future researches on SSLMB are presented, endeavoring on increasing CCD for practical SSLMBs.
机译：由于安全性和高能量密度大大提高，固态锂（LI）金属电池（SSLMBS）已成为能量存储场中的研究热点。然而，SSLMBS遭受包括树突诱导的短路和接触损耗诱导的高阻抗的故障，这与Li电镀/剥离动力学高度相关，并阻碍了SSLMB的实际应用。 SSLMB中没有细胞衰竭的锂电池循环的最大恒定电流密度通常被定义为临界电流密度（CCD）。因此，CCD是应用SSLMB的重要参数，这有助于确定固态电池中Li动力学的速率确定步骤。在此，系统地综述了来自基本热力学和动力学原理，故障机制，CCD识别和影响因素的CCD的理论和实践含义。系统地综述了改善CCD性能的影响。根据这些基本谅解，提出了一系列关于SSLMB的研究的一系列策略和前景，努力增加CCD的实际SSLMB。

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  • 来源
    《Advanced Functional Materials》 |2021年第18期|2009925.1-2009925.33|共33页
  • 作者

    Lu Yang; Zhao Chen-Zi; Yuan Hong; Cheng Xin-Bing; Huang Jia-Qi; Zhang Qiang;

  • 作者单位

    Tsinghua Univ Dept Chem Engn Beijing Key Lab Green Chem React Engn & Technol Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Chem Engn Beijing Key Lab Green Chem React Engn & Technol Beijing 100084 Peoples R China;

    Beijing Inst Technol Adv Res Inst Multidisciplinary Sci Beijing 100081 Peoples R China;

    Tsinghua Univ Dept Chem Engn Beijing Key Lab Green Chem React Engn & Technol Beijing 100084 Peoples R China;

    Beijing Inst Technol Adv Res Inst Multidisciplinary Sci Beijing 100081 Peoples R China;

    Tsinghua Univ Dept Chem Engn Beijing Key Lab Green Chem React Engn & Technol Beijing 100084 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    battery failure; critical current density; dendrites; Li kinetics; Li metal anodes; solid#8208; state batteries; standards;

    机译：电池故障;临界电流密度;树突;李动力学;李金属阳极;固态电池;标准;

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