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Revisiting Phase Transformation Mechanisms in LiNi0.5Mn1.5O4High Voltage Cathodes with Operando Microdiffraction

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成果类型:
期刊论文
作者:
Martens, Isaac;Vostrov, Nikita;Mirolo, Marta;Colalongo, Mattia;Kus, Peter;...
通讯作者:
Schulli, Tobias U.;Drnec, J
作者机构:
[Schülli, TU; Richard, Marie-Ingrid; Mirolo, Marta; Colalongo, Mattia; Martens, Isaac; Drnec, Jakub; Vostrov, Nikita; Schulli, Tobias U.] European Synchrotron Radiat Facil, F-38000 Grenoble, France.
[Kus, Peter] Charles Univ Prague, Fac Math & Phys, Dept Surface & Plasma Sci, Prague 180008, Czech Republic.
[Richard, Marie-Ingrid] Univ Grenoble Alpes, NRS, MEM, IRIG,CEA Grenoble, Grenoble, France.
[Wang, Lianzhou] Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia.
[Wang, Lianzhou] Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia.
通讯机构:
[Schülli, TU; Drnec, J ] E
European Synchrotron Radiat Facil, F-38000 Grenoble, France.
语种:
英文
期刊:
ACS Materials Letters
ISSN:
2639-4979
年:
2022
卷:
4
期:
12
页码:
2528-2536
基金类别:
The authors thank Claire Villevieille for the donation of the electrolyte and the ESRF staff for technical support. This work was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant agreement numbers 814106 (TEESMAT) and 818823 (CARINE)). X.Z. acknowledges support from the National Natural Science Foundation of China (52202210). Scientific and technical assistance for TEM imaging was provided by the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, University of Queensland.
机构署名:
本校为其他机构
院系归属:
材料科学与工程学院
摘要:
Understanding the phase transition mechanisms of active materials inside Li-ion batteries is critical for rechargeability and optimizing the power/energy density of devices. In this work, high-energy microfocused X-ray diffraction is used to measure in operando the state-of-charge heterogeneities inside a high-voltage spinel (LiMn1.5Ni0.5O4, LMNO) cathode. The structure of an active material which resists complete delithiation is studied to move toward unlocking the full storage capacity of ion-conductive spinels. High-precision diffraction als...

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