Guoxiang Zheng, Yifan Jin, Michal Sedlacik, Elif Vargun, Yifan Zhang, Ying He, Petr Saha, Qilin Cheng
{"title":"Mortise-tenon-like ionic/electronic conductive interface facilitates long-cycle solid-state lithium metal batteries","authors":"Guoxiang Zheng, Yifan Jin, Michal Sedlacik, Elif Vargun, Yifan Zhang, Ying He, Petr Saha, Qilin Cheng","doi":"10.1039/d4ta05312e","DOIUrl":null,"url":null,"abstract":"The high energy density and superior safety of solid-state lithium metal batteries (SSLMBs) has been recognized as a next-generation energy storage system with great attention. Garnet-type oxide solid-state electrolytes, especially Li6.4La3Zr1.4Ta0.6O12 (LLZTO), with high ionic conductivity, low activation energy and superior stability with Li, are among the most promising solid-state electrolyte materials. However, high interfacial resistance, uneven lithium deposition and lithium dendrite growth between Li/LLZTO interfaces have hindered the industrialization development of SSLMBs. In this work, a novel mortise-tenon-like hybrid ionic/electronic conductive interface (Li/LZFC@LLZTO) is constructed, which is composed of LiF, LiCl, and Li-Zn alloy through an in situ transformation reaction. As expected, the interfacial impedance of Li/LZFC@LLZTO|Li is significantly reduced from 128 Ω cm2 to 2.7 Ω cm2 and the critical current density increases from 0.3 mA cm-2 to 2.1 mA cm-2, as well as prominent cycling performance of 6600 h at 0.2 mA cm-2 or 900 h at 0.4 mA cm-2. Consequently, both the Li|LZFC@LLZTO|LiFePO4 and Li|LZFC@LLZTO|LiNi0.8Co0.1Mn0.1O2 full cells exhibit excellent rate performance. Furthermore, Li|LZFC@LLZTO|LiFePO4 can maintain a high discharge specific capacity close to 140 mAh g-1 at 0.2 C after 150 cycles of stable cycling. This work lays the foundation for developing garnet-based SSLMBs with high critical current density, low interfacial impedance and long-term cycling performance.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta05312e","RegionNum":2,"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 high energy density and superior safety of solid-state lithium metal batteries (SSLMBs) has been recognized as a next-generation energy storage system with great attention. Garnet-type oxide solid-state electrolytes, especially Li6.4La3Zr1.4Ta0.6O12 (LLZTO), with high ionic conductivity, low activation energy and superior stability with Li, are among the most promising solid-state electrolyte materials. However, high interfacial resistance, uneven lithium deposition and lithium dendrite growth between Li/LLZTO interfaces have hindered the industrialization development of SSLMBs. In this work, a novel mortise-tenon-like hybrid ionic/electronic conductive interface (Li/LZFC@LLZTO) is constructed, which is composed of LiF, LiCl, and Li-Zn alloy through an in situ transformation reaction. As expected, the interfacial impedance of Li/LZFC@LLZTO|Li is significantly reduced from 128 Ω cm2 to 2.7 Ω cm2 and the critical current density increases from 0.3 mA cm-2 to 2.1 mA cm-2, as well as prominent cycling performance of 6600 h at 0.2 mA cm-2 or 900 h at 0.4 mA cm-2. Consequently, both the Li|LZFC@LLZTO|LiFePO4 and Li|LZFC@LLZTO|LiNi0.8Co0.1Mn0.1O2 full cells exhibit excellent rate performance. Furthermore, Li|LZFC@LLZTO|LiFePO4 can maintain a high discharge specific capacity close to 140 mAh g-1 at 0.2 C after 150 cycles of stable cycling. This work lays the foundation for developing garnet-based SSLMBs with high critical current density, low interfacial impedance and long-term cycling performance.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.