锂离子电池正极材料

高容量层状氧化物富镍正极因其成本优势而成为提高电动汽车续航里程的热点。然而,在富镍正极中,仍存在许多沿晶界产生微裂纹、活性物质与电解质界面发生副反应等问题,导致电化学性能迅速恶化。本课题组主要通过结构调控、组分设计、界面改进提高材料电化学性能,此外,还结合原位、非原位等表征手段研究了生长及衰减过程结构重构机理,为结构认识与改进进一步提供新视野。代表作:

(1)Zhengcheng Ye; Bin Zhang; Ting Chen; Zhenguo Wu*; Daqiang Wang; Wei Xiang;  Yan Sun; Yuxia Liu; Yang Liu; Jun Zhang; Yang Song and Xiaodong Guo*;  A Simple Gas-Solid Treatment for Surface Modification of Li-Rich Oxides Cathodes, Angew Chem Int Ed Engl 2021

2Mengke Zhang, Lang Qiu, Yan Sun, Yang Song, Zhenguo Wu, Yuxia Liu, Zhiwei Yang, Yang Liu, Jun Zhang, Benhe Zhong, Xiaodong Guo, Microstructure-Controlled Li-Rich Mn-Based Cathodes by a Gas-Solid Interface Reaction for Tackling the Continuous Activation of Li2MnO3, DOI: 10.1021/acsami.1c12221


3Lang Qiu; Wei Xiang; Wen Tian; Chun-liu Xu; Yong-chun Li; Zhen-guo Wu; Ting-ru Chen; Kun Jia; Dong Wang; Feng-rong He; Xiao-dong Guo*; Polyanion and cation co-doping stabilized Ni-rich Ni-Co-Al material as cathode with Enhanced electrochemical performance for Li-ion battery, Nano Energy, 2019, 63: 103818


4Weibo Hua; Mingzhe Chen; Björn Schwarz*; Michael Knapp; Michael Bruns; Juri Barthel; Xiushan Yang*; Florian Sigel; Raheleh Azmi; Anatoliy Senyshyn; Alkesandr Missiul; Laura Simonelli; Martin Etter; Suning Wang; Xiaoke Mu; Andy Fiedler; Joachim R. Binder; Xiao-dong Guo*; Shulei Chou*; Benhe Zhong; Sylvio Indris*; Helmut Ehrenberg; Lithium/Oxygen Incorporation and Microstructural Evolution during Synthesis of Li-Rich Layered Li[Li0.2Ni0.2Mn0.6]O2 Oxides, Advanced Energy Materials, 2019, 9(8): 1803094

(5)Lang Qiu, Yang Song, Mengke Zhang, Yihua Liu, Zhiwei Yang, Zhenguo Wu, Heng Zhang, Wei Xiang, Yuxia Liu, Gongke Wang, Yan Sun, Jun Zhang, Bin Zhang, Xiaodong Guo. Structural Reconstruction Driven by Oxygen Vacancies in Layered Ni-Rich Cathodes[J]. Advanced Energy Materials, 2022, 12(19): 2200022.

6)Lang Qiu, Mengke Zhang, Yang Song, Zhenguo Wu, Heng Zhang, Weibo Hua, Yan Sun, Qingquan Kong, Wei Feng, Ke Wang, Yao Xiao, Xiaodong Guo. Origin and Rein of Interface Fusion during Synthesis of Single-Crystal Ni-Rich Cathodes[J]. Angewandte Chemie International Edition, 2023, 62(12): e202300209



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