HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Phosphosilicate Gels as a Solid State Proton Conductor at Medium Temperature and Low Humidity

This item is licensed under:Creative Commons Attribution-NoDerivatives 4.0 International

Files in This Item:
JCS110.131-134.pdf825.5 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Phosphosilicate Gels as a Solid State Proton Conductor at Medium Temperature and Low Humidity
Other Titles: 中温低湿度におけるプロトン伝導性固体としてのホスホシリケートゲル
Authors: MATSUDA, Atsunori1 Browse this author
KANZAKI, Takao2 Browse this author
TADANAGA, Kiyoharu3 Browse this author →KAKEN DB
TATSUMISAGO, Masahiro4 Browse this author
MINAMI, Tsutomu5 Browse this author
Authors(alt): 松田, 厚範1
勘崎, 廷夫2
忠永, 清治3
辰巳砂, 昌弘4
南, 努5
Keywords: Proton conduction
Phosphosilicate gel
Phosphoric acid
Medium temperature range
Low humidity
Issue Date: 1-Feb-2002
Publisher: Ceramic Society of Japan
Journal Title: Journal of the Ceramic Society of Japan
Journal Title(alt): 日本セラミックス協会学術論文誌
Volume: 110
Issue: 1278
Start Page: 131
End Page: 134
Publisher DOI: 10.2109/jcersj.110.131
Abstract: Phosphosilicate (P2O5-SiO2) gels with a P/Si molar ratio of 1.0 heat-treated at 150°C were found to retain a high conductivity of 1.5×10-2S·cm-1 even after holding at a temperature of 130°C at a relative humidity of 0.7% for about 400 min. On the other hand, the conductivity of the porous silica gels impregnated with 5M H3PO4 largely decreased from 1×10-2 to 6×10-6S·cm-1 during holding under the same conditions for about 400 min. The difference in the changes of conductivities between phosphosilicate gels and H3PO4-impregnated porous silica gels with holding time indicates that the former can retain larger amounts of adsorbed water at 130°C than the latter. Condensed structural units with Si-O-P-OH groups in the phosphosilicate gels are expected to enhance the retention of the adsorbed water in the gels aiid improve the proton conductivity even at relatively high temperatures and low humidity conditions.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 忠永 清治

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University