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Thermoelectrochemically Activated MoO2 Powder Electrode for Lithium Secondary Batteries

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dc.contributor.authorKu, Jun H.-
dc.contributor.authorJung, Yoon S.-
dc.contributor.authorLee, Kyu T.-
dc.contributor.authorKim, Chang H.-
dc.contributor.authorOh, Seung M.-
dc.date.accessioned2009-07-30T03:06:38Z-
dc.date.available2009-07-30T03:06:38Z-
dc.date.issued2009-
dc.identifier.citationJ. Electrochem. Soc., 156, A688 (2009)en
dc.identifier.issn0013-4651-
dc.identifier.urihttp://hdl.handle.net/10371/5922-
dc.description.abstractThe high temperature lithiation behavior of the MoO2 electrode is examined, which is lithiated by one-electron reduction (by
addition reaction) at room temperature. At elevated temperatures, this electrode is lithiated with four-electron reduction by addition
and continued conversion reaction. As a result of four-electron reduction, the initial crystalline MoO2 phase is decomposed into a
nanosized mixture of metallic Mo and Li2O, which is in turn converted to nanosized MoO2 upon forthcoming delithiation. An
interesting feature here is that as-generated nanosized MoO2 is now fully lithiated up to four-electron reduction even at room
temperature. This phenomenon is named “thermoelectrochemical activation” because the extension from one- to four-electron
reduction is achieved by a simple charge–discharge cycling made at elevated temperatures. The thermoelectrochemically activated
MoO2 electrode delivers a reversible specific capacity that is close to the theoretical four-electron capacity (838 mAh g−1) with
an excellent cycle performance at room temperature.
en
dc.description.sponsorshipThis work was supported by the WCU program through KOSEF
funded by the Ministry of Education, Science and Technology (no.
400-2008-0230). The authors also acknowledge the Research Center
for Energy Conversion and Storage for financial support.
en
dc.language.isoenen
dc.publisherElectrochemical Societyen
dc.titleThermoelectrochemically Activated MoO2 Powder Electrode for Lithium Secondary Batteriesen
dc.typeArticleen
dc.contributor.AlternativeAuthor오승모-
dc.identifier.doi10.1149/1.3141670-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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