电解质
材料科学
法拉第效率
成核
锂(药物)
保形涂层
阳极
涂层
化学工程
图层(电子)
氧化物
钝化
电极
纳米技术
冶金
化学
有机化学
物理化学
内分泌学
工程类
医学
作者
Laura C. Merrill,Daniel Long,Kathryn Small,Katherine L. Jungjohann,Kevin Leung,Kimberly L. Bassett,Katharine L. Harrison
标识
DOI:10.1021/acs.jpcc.2c05385
摘要
Artificial solid electrolyte interphases have provided a path to improved cycle life for high energy density, next-generation anodes like lithium metal. Although long cycle life is necessary for widespread implementation, understanding and mitigating the effects of aging and self-discharge are also required. Here, we investigate several coating materials and their role in calendar life aging of lithium. We find that the oxide coatings are electronically passivating whereas the LiF coating slows charge transfer kinetics. Furthermore, the Coulombic loss during self-discharge measurements improves with the oxide layers and worsens with the LiF layer. It is found that none of the coatings create a continuous conformal, electronically passivating layer on top of the deposited lithium nor are they likely to distribute evenly through a porous deposit, suggesting that none of the materials are acting as an artificial solid electrolyte interphase. Instead, they likely alter performance through modulating lithium nucleation and growth.
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