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Unlocking Electrode Performance of Disordered Rocksalt Oxides Through Structural Defect Engineering and Surface Stabilization with Concentrated Electrolyte
http://hdl.handle.net/10131/0002001317
http://hdl.handle.net/10131/000200131739b70bb8-245d-4dcc-aa60-01ef9907068a
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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公開日 | 2024-10-09 | |||||||||||||
タイトル | ||||||||||||||
タイトル | Unlocking Electrode Performance of Disordered Rocksalt Oxides Through Structural Defect Engineering and Surface Stabilization with Concentrated Electrolyte | |||||||||||||
言語 | en | |||||||||||||
言語 | ||||||||||||||
言語 | eng | |||||||||||||
キーワード | ||||||||||||||
言語 | en | |||||||||||||
主題Scheme | Other | |||||||||||||
主題 | anionic redox; concentrated electrolyte solution; disordered rocksalt; Li-excess oxide; structural defects | |||||||||||||
資源タイプ | ||||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
資源タイプ | journal article | |||||||||||||
アクセス権 | ||||||||||||||
アクセス権 | open access | |||||||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||
著者 |
Zhang, Yanjia
× Zhang, Yanjia
ORCID
0000-0001-8272-187X
× Ugata, Yosuke
ORCID
0000-0002-8233-6725
× Campeon, BenoitDenis Louis
× Yabuuchi, Naoaki
ORCID
0000-0002-9404-5693
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抄録 | ||||||||||||||
内容記述タイプ | Abstract | |||||||||||||
内容記述 | Li-excess cation-disordered rocksalt oxides can boost the energy density of rechargeable batteries by using anionic redox, but the inferior reversibility of anionic redox hinders its use for practical applications. Herein, a binary system of Li3NbO4-LiMnO2 is targeted and the systematic study on factors affecting electrode reversibility, i.e., percolation probability, electronic conductivity, defect concentrations, and electrolyte solutions, is conducted. A Mn-rich sample, Li1.1Nb0.1Mn0.8O2, delivers a smaller reversible capacity compared with a Li-rich sample, Li1.3Nb0.3Mn0.4O2, because of the limitation of ionic migration associated with insufficient percolation probability for disordered oxides. Nevertheless, a larger reversible capacity of Li1.3Nb0.3Mn0.4O2 originates from excessive activation of anionic redox, leading to the degradation of electrode reversibility. The superior performance of Li1.1Nb0.1Mn0.8O2, including Li ion migration kinetics and electronic transport properties, is unlocked by the enrichment of structural defects for nanosized oxides. Moreover, electrode reversibility is further improved by using a highly concentrated electrolyte solution with LiN(SO2F)(2) through the surface stabilization on high-voltage exposure. Superior capacity retention, >100 cycles, is achieved for nanosized Li1.1Nb0.1Mn0.8O2. The electrolyte decomposition and surface stabilization mechanisms are also carefully examined, and it is revealed that the use of highly concentrated electrolyte solution can effectively prevent lattice oxygen being further oxidized and transition metal ion dissolution. | |||||||||||||
言語 | en | |||||||||||||
書誌情報 |
en : Advanced Energy Materials 巻 14, 号 23, ページ数 14, 発行日 2024-06-19 |
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ISSN | ||||||||||||||
収録物識別子タイプ | PISSN | |||||||||||||
収録物識別子 | 16146832 | |||||||||||||
DOI | ||||||||||||||
関連タイプ | isIdenticalTo | |||||||||||||
識別子タイプ | DOI | |||||||||||||
関連識別子 | https://doi.org/10.1002/aenm.202304074 | |||||||||||||
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出版タイプ | VoR | |||||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
出版者 | ||||||||||||||
出版者 | Wiley-VCH Verlag GmbH | |||||||||||||
言語 | en | |||||||||||||
助成情報 | ||||||||||||||
助成機関名 | Japan Society for the Promotion of Science | |||||||||||||
言語 | en | |||||||||||||
助成機関名 | JSPS | |||||||||||||
言語 | en | |||||||||||||
助成機関名 | JST, CREST | |||||||||||||
言語 | en | |||||||||||||
助成機関名 | MEXT Program: Data Creation and Utilization Type Materials Research and Development Project | |||||||||||||
言語 | en | |||||||||||||
助成機関名 | JST as part of Adopting Sustainable Partnerships for Innovative Research Ecosystem (ASPIRE) | |||||||||||||
言語 | en |