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Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
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  • Synchrotron Radiation Application Researches

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In Operando Monitoring of the Pore Dynamics in Ordered Mesoporous Electrode Materials by Small Angle X-ray Scattering

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Title
In Operando Monitoring of the Pore Dynamics in Ordered Mesoporous Electrode Materials by Small Angle X-ray Scattering
Author
Park, Gwi OkYoon, JeongbaePark, EunjunPark, Su BinKim, HyunchulKim, Kyoung HoJin, XingShin, Tae JooKim, HansuThon, Won-SubKim, Ji Man
Issue Date
2015-05
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.9, no.5, pp.5470 - 5477
Abstract
To monitor dynamic volume changes of electrode materials during electrochemical lithium storage and removal process is of utmost importance for developing high performance lithium storage materials. We herein report an in operando probing of mesoscopic structural changes in ordered mesoporous electrode materials during cycling with synchrotron-based small angel X-ray scattering (SAXS) technique. In operando SAXS studies combined with electrochemical and other physical characterizations straightforwardly show how porous electrode materials underwent volume changes during the whole process of charge and discharge, with respect to their own reaction mechanism with lithium. This comprehensive information on the pore dynamics as well as volume changes of the electrode materials will not only be critical in further understanding of lithium ion storage reaction mechanism of materials, but also enable the innovative design of high performance nanostructured materials for next generation batteries
URI
https://scholarworks.unist.ac.kr/handle/201301/17543
URL
http://pubs.acs.org/doi/abs/10.1021/acsnano.5b01378
DOI
10.1021/acsnano.5b01378
ISSN
1936-0851
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