Enhancing Ion Transport and Suppressing Electron Conduction: a Hybrid Interlayer for Stable Garnet‐Based Solid‐State Batteries
Source abstract
Abstract
Abstract Cubic doped Li7La3Zr2O12s (LLZOs) are promising solid‐state electrolytes (SSE) for solid‐state lithium batteries due to their excellent lithium‐ion conductivities and electrochemical stability. However, they face the challenge of lithium dendrite growth. Here, a hybrid interlayer–alloy phases (LiZn, Li22Sn5, Li5Sn2) and Li2O–is created by an in situ reaction between the modified layer Zn2SnO4 (ZSO) on LLZO and lithium metal anodes. Benefiting from the synergistic effect of the fast lithium‐ion conduction of the Li5Sn2 alloy, the strong affinity between the LiZn alloy and LLZO, and electronic insulator Li2O, a super‐conformal structure at the Li/ZSO‐LLZO interface is formed, effectively inhibiting the formation of lithium dendrites in ZSO‐LLZO SSE. Consequently, Li/ZSO‐LLZO/Li symmetric batteries deliver stable cycling (2500 h under 0.3 mA cm−2 at 25 °C and 6000 h under 0.5 mA cm−2 at 60 °C) performances with superhigh critical current densities of 2.5 mA cm−2 at 25 °C and 3.8 mA cm−2 at 60 °C. Moreover, the LiFePO4/ZSO‐LLZO/Li battery delivers capacities of 137.45 mAh g−1 under 1 C for 500 cycles and 111.78 mAh g−1 under a high rate of 2 C for 300 cycles. This work with a hybrid interlayer opens a boulevard for designing energy‐dense and long‐life solid‐state batteries.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Perovskite Materials and Applications · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Hubei Provincial Key Laboratory of Green Materials for Light Industry Hubei University of Technology Wuhan 430068 China
Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang 441022 China
Hubei Key Laboratory of Pollutant Analysis & Reuse Technology College of Chemistry and Chemical Engineering Hubei Normal University Huangshi 435002 China
Scienceand Technology On Aerospace Chemical Power Laboratory Laboratory of Emergency Safety and Rescue Technology Hubei Institute of Aerospace Chemotechnology Xiangyang 441003 China
State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
College of Materials Science and Engineering Hunan University Changsha 410082 China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Hubei Province · Hubei Provincial Key Laboratory of Green Materials for Light Industry · Natural Science Foundation of Hunan Province
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