Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/125239
DC Field | Value | |
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dc.title | CONTROL OF STRUCTURE AND FUNCTIONAL PROPERTIES OF GA:M5+-CODOPED LITHIUM LANTHANUM ZIRCONATE (LI7LA3ZR2O12) (M=Ta, Nb) SOLID ELECTROLYTES BY AN OPTIMIZED PROCESSING PROFILE | |
dc.contributor.author | GU WENYI | |
dc.date.accessioned | 2016-06-30T18:01:26Z | |
dc.date.available | 2016-06-30T18:01:26Z | |
dc.date.issued | 2016-01-22 | |
dc.identifier.citation | GU WENYI (2016-01-22). CONTROL OF STRUCTURE AND FUNCTIONAL PROPERTIES OF GA:M5+-CODOPED LITHIUM LANTHANUM ZIRCONATE (LI7LA3ZR2O12) (M=Ta, Nb) SOLID ELECTROLYTES BY AN OPTIMIZED PROCESSING PROFILE. ScholarBank@NUS Repository. | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/125239 | |
dc.description.abstract | GARNET-TYPE LITHIUM FAST-ION CONDUCTOR LI7LA3ZR2O12 (LLZ) IS A PROMISING CANDIDATE TO FACILITATE THE DESIGN OF HIGH ENERGY BATTERIES DUE TO ITS STABILITY IN CONTACT WITH LITHIUM AND CATHODE MATERIALS AND HIGH LI+-ION YET NEGLIGIBLE ELECTRONIC CONDUCTIVITY. HERE, THE SYNTHESIS OF LLZ WITH PENTAVALENT (TA,NB), TRIVALENT (AL,GA), OR HEXAVALENT (TE) DOPANTS WAS SYSTEMATICALLY INVESTIGATED USING CONVENTIONAL SOLID-STATE REACTIONS OR LOW-TEMPERATURE SOL-GEL PROCESSES. EFFECTS OF DOPANTS ON STABILISATION OF THE FAST-ION CONDUCTING CUBIC PHASE, STRUCTURAL DETAILS, LI+-ION ORDERING AND CONDUCTIVITY AND THEIR CORRELATION WERE STUDIED SYSTEMATICALLY BY X-RAY OR NEUTRON DIFFRACTION, IMPEDANCE SPECTROSCOPY AND MOLECULAR DYNAMICS SIMULATIONS. FORMATION AND DECOMPOSITION MECHANISMS AND THE INFLUENCE OF CO2 THEREON WERE STUDIED. THE INCORPORATION OF GA2O3 AS A SINTERING AGENT RESULTED IN GA:TA5+/NB5+-CODOPED LLZ WITH ~10% INCREASED DENSITY AND HENCE AN ENHANCED LI+ ION CONDUCTIVITY. ITS APPLICATION AS | |
dc.language.iso | en | |
dc.subject | Lithium Lanthanum Zirconate, LLZ, Solid electrolyte, Li-air batteries, Processing profile | |
dc.type | Thesis | |
dc.contributor.department | MATERIALS SCIENCE AND ENGINEERING | |
dc.contributor.supervisor | ADAMS, STEFAN NIKOLAUS | |
dc.description.degree | Ph.D | |
dc.description.degreeconferred | DOCTOR OF PHILOSOPHY | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Ph.D Theses (Open) |
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GuWY.pdf | 8.76 MB | Adobe PDF | OPEN | None | View/Download |
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