@article{6a48117dba0344afaeed8f349f1482f0,
title = "Multiscale Understanding of Surface Structural Effects on High-Temperature Operational Resiliency of Layered Oxide Cathodes",
abstract = "The worldwide energy demand in electric vehicles and the increasing global temperature have called for development of high-energy and long-life lithium-ion batteries (LIBs) with improved high-temperature operational resiliency. However, current attention has been mostly focused on cycling aging at elevated temperature, leaving considerable gaps of knowledge in the failure mechanism, and practical control of abusive calendar aging and thermal runaway that are highly related to the eventual operational lifetime and safety performance of LIBs. Herein, using a combination of various in situ synchrotron X-ray and electron microscopy techniques, a multiscale understanding of surface structure effects involved in regulating the high-temperature operational tolerance of polycrystalline Ni-rich layered cathodes is reported. The results collectively show that an ultraconformal poly(3,4-ethylenedioxythiophene) coating can effectively prevent a LiNi 0.8Co 0.1Mn 0.1O 2 cathode from undergoing undesired phase transformation and transition metal dissolution on the surface, atomic displacement, and dislocations within primary particles, intergranular cracking along the grain boundaries within secondary particles, and intensive bulk oxygen release during high state-of-charge and high-temperature aging. The present work highlights the essential role of surface structure controls in overcoming the multiscale degradation pathways of high-energy battery materials at extreme temperature.",
author = "Xiang Liu and Xinwei Zhou and Qiang Liu and Jiecheng Diao and Chen Zhao and Luxi Li and Yuzi Liu and Wenqian Xu and Amine Daali and Ross Harder and Robinson, \{Ian K.\} and Mouad Dahbi and Jones Alami and Guohua Chen and Xu, \{Gui Liang\} and Khalil Amine",
note = "Funding Information: X.L., X.Z., and Q.L. contributed to this work equally. Research at Argonne National Laboratory was funded by the US Department of Energy (DOE) Vehicle Technologies Office. Use of the Advanced Photon Source and Center for Nanoscale Materials, Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under Contract No. DE‐AC02‐06CH11357. This research used the mail‐in program at Beamline 17‐BM of the Advanced Photon Source. X.L., G.X., and K.A. acknowledge the support of the U.S. China Clean Energy Research Center (CERC‐CVC2). Q.L. and G.C. thank the funding support from Hong Kong Research Grants Council (GRF 15221719), Otto Poon Charitable Foundation (No. 847W), and The Hong Kong Polytechnic University (No. P0034050). The submitted manuscript has been created by Chicago Argonne, LLC, Operator of Argonne National Laboratory (*Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE‐AC02‐06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid‐up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Aces Plan. https://lenergy.govi/downloads/doe-public-access-plan . Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",
year = "2022",
month = jan,
day = "27",
doi = "10.1002/adma.202107326",
language = "English",
volume = "34",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",
number = "4",
}
