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Visualization of lithium-ion transport and phase evolution within and between manganese oxide nanorods [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Article numbers 15,400 : digital, PDF file
Additional Creators
Brookhaven National Laboratory, United States. Department of Energy. Office of Basic Energy Sciences, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Multiple lithium-ion transport pathways and local phase changes upon lithiation in silver hollandite are revealed via in situ microscopy including electron diffraction, imaging and spectroscopy, coupled with density functional theory and phase field calculations. Here, we report unexpected inter-nanorod lithium-ion transport, where the reaction fronts and kinetics are maintained within the neighbouring nanorod. Notably, this is the first time-resolved visualization of lithium-ion transport within and between individual nanorods, where the impact of oxygen deficiencies is delineated. Initially, fast lithium-ion transport is observed along the long axis with small net volume change, resulting in two lithiated silver hollandite phases distinguishable by orthorhombic distortion. As a result, a slower reaction front is observed, with formation of polyphase lithiated silver hollandite and face-centred-cubic silver metal with substantial volume expansion. Our results indicate lithium-ion transport is not confined within a single nanorod and may provide a paradigm shift for one-dimensional tunnelled materials, particularly towards achieving high-rate capability.
Report Numbers
E 1.99:bnl--114057-2017-ja
bnl--114057-2017-ja
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Note
Published through SciTech Connect.
05/24/2017.
"bnl--114057-2017-ja"
"KC0201010"
Nature Communications 8 ISSN 2041-1723 AM
Feng Xu; Lijun Wu; Qingping Meng; Merzuk Kaltak; Jianping Huang; Jessica L. Durham; Marivi Fernandez-Serra; Litao Sun; Amy C. Marschilok; Esther S. Takeuchi; Kenneth J. Takeuchi; Mark S. Hybertsen; Yimei Zhu.
Funding Information
SC00112704
SC0012673
SC0012704
AC02-05CH11231
MA015MACA
View MARC record | catkey: 23757686