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Bio-inspired synthesis of transition-metal oxide hybrid ultrathin nanosheets for enhancing the cycling stability in lithium-ion batteries

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Nano Research 2022年第6期15卷 5064-5071页

作者： Yan-Ru Wang Qing-Feng Zhuang Yi Li Ya-Lin Hu Yang-Yi Liu Qiao-Bao Zhang Lei Shi Chuan-Xin He Xiao Zheng Shu-Hong Yu Department of Chemistry Institute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleInstitute of EnergyHefei Comprehensive National Science CenterUniversity of Science and Technology of ChinaHefei 230026China Division of Theoretical and Computational Sciences Hefei National Laboratory for Physical Sciences at the MicroscaleDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhenGuangdong 518060China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamenFujian 361005China

Constructing two-dimensional(2D)structures for transition-metal oxides(TMOs)can optimize their electronic structures and enable high specific surface areas,thereby offering routes to enhancing the performance of TMOs in energy storage and ***,most 2D TMOs,e.g.,Fe_(2)O^(3),remain so far synthetically challenging due to their intrinsic non-layered ***,inspired by the mechanism of biomineralization,we report the synthesis of CuO/Fe_(2)O^(3)hybrid ultrathin nanosheets by using polyvinylpyrrolidone-decorated CuO nanosheets as growth modifiers to modulate the hydrolysis process of Fe^(2+).The formulated“absorption-and-crystallization”two-step formation processes of such 2D hybrid structures accorded well with the biomineralization scheme in *** the in-situ transmission electron microscopy(TEM)study,theoretical calculation,and control experiments,we validated that the large density of 2D/2D interfaces enabled by this bio-inspired synthesis process can overcome the self-stacking phenomenon during lithium-ion battery cycling,leading to their high operation *** work emphasizes the bio-inspired synthesis of 2D TMOs as a promising pathway toward material design and performance optimization.

关键词： bio-inspired synthesis two-dimensional transition-metal oxides hybrid nanosheets interfaces lithium-ion batteries

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