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學年
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112 |
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學期
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1 |
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出版（發表）日期
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2023-10-23 |
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作品名稱
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Unveiling the Evolution of LiCoO2 beyond 4.6 V |
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作品名稱（其他語言）
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著者
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Zixin Wu, Guifan Zeng, Jianhua Yin, Chao-Lung Chiang, Qinghua Zhang, Baodan Zhang, Jianken Chen, Yawen Yan, Yonglin Tang, Haitang Zhang, Shiyuan Zhou, Qingsong Wang, Xiaoxiao Kuai, Yan-Gu Lin, Lin Gu, Yu Qiao, Shi-Gang Sun |
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單位
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出版者
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著錄名稱、卷期、頁數
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ACS Energy Letters, 8(11), 4806-4817 |
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摘要
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The working mechanism of LiCoO2 beyond 4.6 V presents complicated issues: (1) the ambiguous multistructural evolutions, (2) the vague O-related anionic redox reactions (ARR) triggered by the overlap Co–O bands, and (3) the serious electrode–electrolyte interface stability challenges. The intricate relationship among them turns into a classic “chicken and egg” conundrum, leading to a confusing evolution process of LiCoO2. Herein, from an ingenious perspective combining stacking faults and nonhomogeneous delithiation, we originally demonstrate a series of intergrowth phase evolutions from O3 to O1, passing through the so-called H1-3 phase. Moreover, in sharp contrast to the O–O dimer formed in a traditional Li-rich layered cathode, a moderate and stable arrangement of oxidized lattice oxygen is unveiled as a manifestation of ARR in LiCoO2. Additionally, we clarify the nature that dehydrogenation and hydrolysis of electrolyte trigger the chain decompositions and intensify the surface degradation. |
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關鍵字
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Chemical structure, Electrodes, Electrolytes, Oxygen, Phase transitions |
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語言
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en_US |
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ISSN
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期刊性質
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國外 |
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收錄於
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SCI
SSCI
Scopus
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產學合作
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通訊作者
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Xiaoxiao Kuai, Yan-Gu Lin, Lin Gu, Yu Qiao |
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審稿制度
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否 |
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國別
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USA |
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公開徵稿
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出版型式
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,電子版 |