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Acid induced conversion towards a robust and lithiophilic interface for Li-Li7La3Zr2O12 solid-state batteries
Ruan, Yadong; Lu, Yang; Huang, Xiao; Su, Jianmeng; Sun, Changzhi; Jin, Jun; Wen, Zhaoyin
2019-06-28
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume7Issue:24Pages:14565
SubtypeArticle
AbstractSolid-state lithium batteries (SSBs) promise high energy and power densities, as well as enhanced safety, owing to the use of Li metal and nonflammable solid-state electrolytes. In particular, cubic garnet-type Ta-substituted Li7La3Zr2O12 (LLZTO) is known for its high ionic conductivity and stability against Li metal. However, poor interfacial contact of the Li/LLZO interface is an obstacle that has come to light in the face of more demanding applications. Herein, to tackle this problem, a novel and facile strategy is demonstrated using H3PO4 to react with the Li2CO3/LiOH passivation layer of the LLZTO surface to form a uniform Li3PO4 modification layer. The Li3PO4 layer not only promotes interfacial wettability by reducing the significant difference of the surface energy, but also produces a robust solid electrolyte interphase (SEI) to inhibit lithium dendrite penetration. The symmetric cell exhibits a dramatically reduced interfacial resistance of 7.0 Ohm cm(2) and ultrastable galvanostatic cycling, over 1600 hours at 0.1 mA cm(-2) and over 450 hours at 0.5 mA cm(-2). Besides this, hybrid solid-state full cells matched with different cathodes also displayed excellent electrochemical performances. LiFePO4 exhibited stable cycling (similar to 150 mA h g(-1)) and a good rate performance. In particular, for a S cathode, the coulombic efficiencies remained higher than 99% over 200 cycles. The use of a ternary NCM523 cathode also confirmed the anodic interfacial stability up to high voltage (4.5 V). Therefore, this facile strategy provides a stepping stone for future applications of solid-state Li-ion and Li-S batteries.
DOI10.1039/c9ta01911a
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27035
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Ruan, Yadong,Lu, Yang,Huang, Xiao,et al. Acid induced conversion towards a robust and lithiophilic interface for Li-Li7La3Zr2O12 solid-state batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(24):14565.
APA Ruan, Yadong.,Lu, Yang.,Huang, Xiao.,Su, Jianmeng.,Sun, Changzhi.,...&Wen, Zhaoyin.(2019).Acid induced conversion towards a robust and lithiophilic interface for Li-Li7La3Zr2O12 solid-state batteries.JOURNAL OF MATERIALS CHEMISTRY A,7(24),14565.
MLA Ruan, Yadong,et al."Acid induced conversion towards a robust and lithiophilic interface for Li-Li7La3Zr2O12 solid-state batteries".JOURNAL OF MATERIALS CHEMISTRY A 7.24(2019):14565.
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