Affiliation:
1. Graduate School of Engineering Nagasaki University Nagasaki 852‐8521 Japan
2. Graduate School of Engineering University of Hyogo Himeji Hyogo 671‐2280 Japan
3. Research Center for Advanced Measurement and Characterization National Institute for Materials Science Tsukuba 305‐0047 Japan
4. Department of Chemistry University of Calgary Calgary Alberta T2N 1N4 Canada
Abstract
AbstractAll‐solid‐state lithium batteries (ASSLBs) are prepared using garnet‐type solid electrolytes by quick liquid phase sintering (Q‐LPS) without applying high pressure during the sintering. The cathode layers are quickly sintered with a heating rate of 50–100 K min−1 and a dwell time of 10 min. The battery performance is dramatically improved by simultaneously optimizing materials, processes, and architectures, and the initial discharge capacity of the cell with a LiCoO2‐loading of 8.1 mg reaches 1 mAh cm−2 and 130 mAh g−1 at 25 °C. The all‐solid‐state cell exhibits capacity at a reduced temperature (10 °C) or a relatively high rate (0.1 C) compared to the previous reports. The Q‐LPS would be suitable for large‐scale manufacturing of ASSLBs. The multiphysics analyses indicate that the internal stress reaches 1 GPa during charge/discharge, which would induce several mechanical failures of the cells: broken electron networks, broken ion networks, separation of interfaces, and delamination of layers. The experimental results also support these failures.
Funder
Advanced Low Carbon Technology Research and Development Program
Japan Science and Technology Agency
Natural Sciences and Engineering Research Council of Canada
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
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