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Shin, Tae Joo
Synchrotron Radiation Research Lab.
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In Operando Monitoring of the Pore Dynamics in Ordered Mesoporous Electrode Materials by Small Angle X-ray Scattering

Author(s)
Park, Gwi OkYoon, JeongbaePark, EunjunPark, Su BinKim, HyunchulKim, Kyoung HoJin, XingShin, Tae JooKim, HansuThon, Won-SubKim, Ji Man
Issued Date
2015-05
DOI
10.1021/acsnano.5b01378
URI
https://scholarworks.unist.ac.kr/handle/201301/17543
Fulltext
http://pubs.acs.org/doi/abs/10.1021/acsnano.5b01378
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
Publisher
AMER CHEMICAL SOC
ISSN
1936-0851
Keyword (Author)
mesoporous electrodein operando monitoringsmall-angle X-ray scatteringpore dynamicsLi-storage
Keyword
RECHARGEABLE LITHIUM BATTERIESELECTROCHEMICAL LITHIATIONSILICA TEMPLATESFACILE SYNTHESISSNO2 NANOWIREION BATTERIESSTORAGEMICROSCOPYPERFORMANCECONVERSION

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