期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 167, 期 2, 页码 -出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1945-7111/ab6439
关键词
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资金
- Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the US Department of Energy through the Advanced Battery Materials Research Program (Battery500 Consortium)
- US Department of Energy [DE-AC07-05ID14517, DE-AC05-76RLO1830]
Understanding the role of pressure on improving cycle life for high energy rechargeable lithium metal batteries (LMBs) is crucial for their adoption in practical applications. In this work, a fixed-gap test fixture is developed to monitor stack pressure of a multilayer, 300 Wh kg(-1) LMB over 245 cycles. During early cycling, a linear fade in discharge capacity is mirrored by a steady increase in baseline pressure. In later cycles, cell failure is linked to a large increase in baseline pressure due to irreversible side reactions such as continued SEI formation and gas evolution, as corroborated by incremental capacity analysis. (C) 2020 The Electrochemical Society (ECS). Published on behalf of ECS by IOP Publishing Limited.
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