电解液改善锂离子电池低温析锂研究进展  

A review of electrolyte reducing lithium plating in lowtemperature lithium-ion batteries

作　　者：李泽珩 徐磊 姚雨星 闫崇 翟喜民 郝雪纯 陈爱兵[5] 黄佳琦 别晓非 孙焕丽 范丽珍 张强[1,7,8] LI Zeheng;XU Lei;YAO Yuxing;YAN Chong;ZHAI Ximin;HAO Xuechun;CHEN Aibing;HUANG Jiaqi;BIE Xiaofei;SUN Huanli;FAN Lizhen;ZHANG Qiang(Tsinghua Center for Green Chemical Engineering Electrification,Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China;College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,Zhejiang,China;Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China;China FAW Group Co.,Ltd.,Changchun 130013,Jilin,China;College of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei,China;Institute of Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Institute for Carbon Neutrality,Tsinghua University,Beijing 100084,China;Shanxi Research Institute for Clean Energy,Tsinghua University,Taiyuan 030032,Shanxi,China)

机构地区：[1]清华大学化学工程系,绿电化工研究中心,绿色反应工程与工艺北京市重点实验室,北京100084 [2]浙江大学化学工程与生物工程学院,浙江杭州310058 [3]北京理工大学前沿交叉科学研究院,北京100081 [4]中国第一汽车股份有限公司,吉林长春130013 [5]河北科技大学化学与制药工程学院,河北石家庄050018 [6]北京科技大学新材料技术研究院,北京100083 [7]清华大学碳中和研究院,北京100084 [8]清华大学山西清洁能源研究院,山西太原030032

出　　处：《储能科学与技术》2024年第7期2192-2205,共14页Energy Storage Science and Technology

基　　金：京津冀协同创新共同体建设专项(22344402D);北京市自然科学基金重点项目(Z200011);国家自然科学基金项目(22379014,52100342,U21A2080);吉林省重大专项(20210301021GX);山西省重点研发计划(202102060301011);鄂尔多斯-清华碳中和协同创新专项,清华大学自主科研。

摘　　要：锂离子电池作为便携式电子产品和电动汽车的“心脏”,在推动人类社会的无化石燃料化中发挥着至关重要的作用。然而,在低温条件下(0℃及以下)充电时,锂离子电池电极极化急剧增大,导致了严重的析锂问题。通过合理设计低温电解液,降低低温充电时电极极化,并构建稳定的电解液-电极界面,可以有效遏制析锂及其对锂离子电池带来的不利影响。本文首先阐释了低温下锂离子电池析锂的形成机制,并指出低温电解液的设计是改善锂离子电池低温析锂行为的有效途径。接着,本文进一步介绍了缓解低温析锂问题的几种电解液设计策略,包括降低去溶剂化能垒的弱溶剂化电解液和共嵌入电解液、衍生低阻抗固态电解质界面膜(SEI)的局部高盐电解液以及钝化析锂的羧酸酯基高盐电解液,同时比较了这些策略的优劣势。最后,结合现有研究成果,展望了电解液调控低温析锂行为的未来研究方向,提出了发展实时析锂预警方法、采用实用化条件评估电解液抑制低温析锂能力以及设计兼顾电化学动力学和界面稳定性的高比能硅碳负极用低温电解液,以望实现低温锂离子电池的高容量发挥和长循环寿命。Lithium-ion batteries(LIBs)are strongly considered the"heart"of portable electronic devices and electric vehicles,playing a vital role in advancing the de-fossil fuels for our sustainable world.However,during charging in low-temperature conditions(0℃and below),the electrode polarization of LIBs increases,leading to significant Li plating.To address this issue,it is imperative to strategically design low-temperature electrolytes,that can reduce electrode polarization during low-temperature charging and establish a stable electrolyte-electrode interface.By doing so,it becomes feasible to effectively mitigate Li plating and its detrimental impacts on LIBs.In this review,we firstly introduce the formation mechanism of low-temperature lithium plating and emphasize that the implementation of lowtemperature electrolyte to mitigating the low-temperature Li plating in working LIBs.Subsequently,we summarize various electrolyte design strategies aimed at mitigating the challenges posed by low-temperature Li plating.The strategies include weakly solvating electrolytes and solvent co-intercalation electrolytes to lower the desolvation energy barrier,localized high-concentration electrolytes for low-impedance SEI formation,and ester-based high-concentration electrolytes for passivating plated Li.Furthermore,we analyzed the strengths and weaknesses of these strategies.Lastly,drawing on existing research findings,we outline the future directions concerning the regulation of low-temperature Li plating behavior through electrolyte solutions.Emphasis is placed on the necessity of developing realtime early-warning methods for Li plating,evaluating the effectiveness of electrolytes in inhibiting low-temperature Li plating under practical conditions,and designing of lowtemperature electrolytes tailored for silicon-carbon composite anodes that consider both electrochemical kinetics and interfacial stability.These approaches aim to simultaneously achieve high capacity and long lifespan of low-temperature LIBs.

关 键 词：析锂 低温 电解液 锂离子电池 电极极化 

分 类 号：TM911[电气工程—电力电子与电力传动]