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

Title
In Operando Monitoring of the Pore Dynamics in Ordered Mesoporous Electrode Materials by Small Angle X-ray Scattering
Authors
김한수
Keywords
mesoporous electrode; in operando monitoring; small-angle X-ray scattering; pore dynamics; Li-storage
Issue Date
2015-06
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v. 9, NO 5, Page. 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
http://pubs.acs.org/doi/abs/10.1021/acsnano.5b01378http://hdl.handle.net/20.500.11754/25690
ISSN
1936-0851; 1936-086X
DOI
http://dx.doi.org/10.1021/acsnano.5b01378
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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