399 0

Full metadata record

DC FieldValueLanguage
dc.contributor.author백운규-
dc.date.accessioned2016-10-10T07:47:17Z-
dc.date.available2016-10-10T07:47:17Z-
dc.date.issued2015-04-
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY A, v. 3, NO 16, Page. 8590-8596en_US
dc.identifier.issn2050-7488-
dc.identifier.issn2050-7496-
dc.identifier.urihttp://pubs.rsc.org/en/Content/ArticleLanding/2015/TA/C5TA00467E#!divAbstract-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/23708-
dc.description.abstractTitanium niobium oxide (TiNb2O7) has been reported recently as an attractive anode material for lithium ion batteries due to its practical capacity of similar to 280 mA h g(-1), which is much higher than those of well-known metal oxide materials such as TiO2 and Li4Ti5O12. However, low electronic conductivity and poor lithium diffusivity limit its practical use as the active material in lithium ion batteries. Here, we synthesized porous TiNb2O7 nanofibers decorated with Ti1-xNbxN bumps via electro-spinning and thermal ammonia gas treatment. As-prepared nanofibers have one-dimensional geometry with an average diameter of similar to 110 nm, and consist of similar to 70 nm crystallites and pores in the range of 0-40 nm, shortening pathways for Li+ ion migration into the host material. Furthermore, conductive Ti1-xNbxN bumps with a particle size of similar to 5 nm were formed on the surface via thermal ammonia gas treatment which render fast electron transport along the longitudinal direction. The fibers have a specific discharge capacity of similar to 254 mA h g(-1) at 1 C and a superior rate capability (similar to 183 mA h g(-1) at 100 C). They also show a robust cycle performance over 500 cycles. These dramatic achievements are attributed to heterogeneous nano-structuring creating a porous structure, and the conductivity of the metal nitride achieved by optimal synthetic conditions.en_US
dc.description.sponsorshipThis work was financially supported by the National Research Foundation of Korea (NRF) through Grant no. K20704000003TA050000310, Global Research Laboratory (GRL) Program provided by the Korean Ministry of Education, Science and Technology (MEST).en_US
dc.language.isoenen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.subjectRECHARGEABLE LITHIUM BATTERIESen_US
dc.subjectVANADIUM NITRIDEen_US
dc.subjectOXYNITRIDEen_US
dc.subjectTIO2en_US
dc.subjectFILMen_US
dc.subjectSTORAGEen_US
dc.subjectNBNen_US
dc.subjectPHOTOCATALYSISen_US
dc.subjectPERFORMANCEen_US
dc.subjectELECTRODESen_US
dc.titlePorous TiNb2O7 nanofibers decorated with conductive Ti1-xNbxN bumps as a high power anode material for Li-ion batteriesen_US
dc.typeArticleen_US
dc.relation.no16-
dc.relation.volume3-
dc.identifier.doi10.1039/c5ta00467e-
dc.relation.page8590-8596-
dc.relation.journalJOURNAL OF MATERIALS CHEMISTRY A-
dc.contributor.googleauthorPark, Hyunjung-
dc.contributor.googleauthorSong, Taeseup-
dc.contributor.googleauthorPaik, Ungyu-
dc.relation.code2015000269-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ENERGY ENGINEERING-
dc.identifier.pidupaik-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE