{"title":"Suppressing Li voids in all-solid-state lithium metal batteries through Li diffusion regulation","authors":"","doi":"10.1016/j.joule.2024.07.007","DOIUrl":null,"url":null,"abstract":"<p>The application of all-solid-state lithium metal batteries (ASSLMBs) is hampered by the dynamic deterioration of solid-solid contacts. Anodic degradation is primarily attributed to the accumulation of lithium (Li) voids due to the limited Li diffusion abilities of the anodes. Here, a ternary composite Li anode is introduced by comprising carbon materials embedded within the Li-magnesium substrate. This design effectively suppresses the Li void-induced dynamic deterioration of interfacial contact during continuous cycling. The enhanced Li diffusion pathway with accelerated diffusion rate in bulk anode aids in maintaining contact post-Li stripping, therefore mitigating interface damage caused by Li void formation. The ternary composite anode affords an areal capacity of 14.2 mAh cm<sup>−2</sup> with Li utilization rate of 85%. Cooperated with LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> (NCM622) cathodes, the full cells exhibit long-term stability of >300 cycles under room temperature. These findings provide an effective strategy to construct conformal interfaces for high-capacity and long-life ASSLMBs.</p>","PeriodicalId":343,"journal":{"name":"Joule","volume":null,"pages":null},"PeriodicalIF":38.6000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Joule","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.joule.2024.07.007","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The application of all-solid-state lithium metal batteries (ASSLMBs) is hampered by the dynamic deterioration of solid-solid contacts. Anodic degradation is primarily attributed to the accumulation of lithium (Li) voids due to the limited Li diffusion abilities of the anodes. Here, a ternary composite Li anode is introduced by comprising carbon materials embedded within the Li-magnesium substrate. This design effectively suppresses the Li void-induced dynamic deterioration of interfacial contact during continuous cycling. The enhanced Li diffusion pathway with accelerated diffusion rate in bulk anode aids in maintaining contact post-Li stripping, therefore mitigating interface damage caused by Li void formation. The ternary composite anode affords an areal capacity of 14.2 mAh cm−2 with Li utilization rate of 85%. Cooperated with LiNi0.6Co0.2Mn0.2O2 (NCM622) cathodes, the full cells exhibit long-term stability of >300 cycles under room temperature. These findings provide an effective strategy to construct conformal interfaces for high-capacity and long-life ASSLMBs.
期刊介绍：
Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.
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