R. Kawamura, Ryosuke Sakamoto, Y. Oshima, J. Otomo
{"title":"MICROSTRUCTURE OBSERVATION AND ELECTRICAL CONDUCTIVITIES OF PROTON-CONDUCTING TiO2-P2O5 GLASS-CERAMIC SOLID ELECTROLYTES","authors":"R. Kawamura, Ryosuke Sakamoto, Y. Oshima, J. Otomo","doi":"10.3363/PRB.28.24","DOIUrl":null,"url":null,"abstract":"A new, fast proton-conducting TiO2-P2O5 glass-ceramic was developed and investigated through microstructure observation and electrical conductivity measurements. TiO2-P2O5 glass-ceramic samples were prepared by a sol-gel method and post-annealing heat treatment. With an increase in the post-annealing temperature, growth of TiP2O7 crystals in the TiO2P2O5 glassy phase was observed. In addition, a tenfold enhancement in maximum conductivity was observed after postannealing heat treatment compared with the as-prepared sample and polycrystalline TiP2O7. The interfacial layer between the TiO2-P2O5 glassy phase and the TiP2O7 crystal phase may act as a fast proton-conducting path, thereby improving the total conductivity. This hypothesis is discussed using the brick layer model. (Received Sep. 29, 2013; Accepted Nov. 22, 2013)","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"76 1","pages":"24-29"},"PeriodicalIF":0.0000,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Phosphorus Research Bulletin","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3363/PRB.28.24","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A new, fast proton-conducting TiO2-P2O5 glass-ceramic was developed and investigated through microstructure observation and electrical conductivity measurements. TiO2-P2O5 glass-ceramic samples were prepared by a sol-gel method and post-annealing heat treatment. With an increase in the post-annealing temperature, growth of TiP2O7 crystals in the TiO2P2O5 glassy phase was observed. In addition, a tenfold enhancement in maximum conductivity was observed after postannealing heat treatment compared with the as-prepared sample and polycrystalline TiP2O7. The interfacial layer between the TiO2-P2O5 glassy phase and the TiP2O7 crystal phase may act as a fast proton-conducting path, thereby improving the total conductivity. This hypothesis is discussed using the brick layer model. (Received Sep. 29, 2013; Accepted Nov. 22, 2013)
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