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spatial control of lithium Deposition by controlling the Lithiophilicity with Copper(Ⅰ)Oxide Boundaries

能源与环境材料（英文） 2023年第5期6卷 183-191页

作者： Ju Ye Kim Oh B.Chae Gukbo Kim Woo-Bin Jung Sungho Choi Do Youb Kim San Moon Jungdon Suk Yongku Kang Mihye Wu Hee-Tae Jung Department of Chemical and Biomolecular Engineering(BK-21 four)and Institute for Nanocentury Korea Advanced Institute of Science and Technology(KAIST)DaejeonKorea Chemical & Process Technology Division Korea Research Institute of Chemical TechnologyDaejeon 34114Korea School of Engineering Brown UniversityProvidence 02912USA Department of Chemistry University of Rhode IslandKingston 02881USA Department of Chemical and Biomolecular Engineering(BK-21 four)and Institute for Nanocentury Korea Advanced Institute of Science and Technology(KAIST)DaejeonKorea Department of Chemical and Biomolecular Engineering(BK-21 four)and Institute for Nanocentury Korea Advanced Institute of Science and Technology(KAIST)DaejeonKorea School of Engineering and Applied Sciences Harvard UniversityCambridge 02138USA Advanced Materials Division Korea Research Institute of Chemical TechnologyDaejeon 34114Korea Department of Chemical and Biomolecular Engineering(BK-21 four)and Institute for Nanocentury Korea Advanced Institute of Science and Technology(KAIST)DaejeonKorea Advanced Materials Division Korea Research Institute of Chemical TechnologyDaejeon 34114Korea

spatial control of lithium deposition is the most important issue in lithium-metal batteries because of the considerable control of lithium dendrite suppression via the uniform distribution of Li+*** seed materials are crucial for the behavior of lithium deposition,in-depth studies on their physical and chemical control have not been ***,we describe a new design of seed structure comprising a wrinkled Cu/graphene substrate surrounded by copper(Ⅰ)oxide(Cu2O)on a graphene grain boundary over a large area,which is fabricated by the oxidation of the Cu surface via graphene boundary defects by using chemical vapor deposition(CVD).Scanning and transmission electron microscopy results reveal that Cu2O on the graphene boundary can render a preferential reaction with lithium during the first deposition and assist in the uniform deposition of lithium by preventing the agglomeration of lithium clusters during the second *** two-step process is attributed to the degree of selectivity due to the difference in lithium affinity,which allows long-term electrochemical stability and a high rate capability via boundary *** study highlights the significance of the boundary effect,which can open new avenues for the formation of a large family of seed structures in lithium-metal batteries.

关键词： Cu2O boundary dendrite-free lithium deposition lithium-metal battery lithium spatial control seed boundary effect

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