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

MATSUDA, Atsunori; KANZAKI, Takao; TADANAGA, Kiyoharu; TATSUMISAGO, Masahiro; MINAMI, Tsutomu

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

MATSUDA, Atsunori; KANZAKI, Takao; TADANAGA, Kiyoharu et al.

Journal of the Ceramic Society of Japan, 2002, 110(1278), 131-134

Permalink : https://hdl.handle.net/2115/73943

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アクセス権	open access
URI	https://hdl.handle.net/2115/73943
タイトル	Phosphosilicate Gels as a Solid State Proton Conductor at Medium Temperature and Low Humidity
タイトル	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
著者	MATSUDA, Atsunori ; KANZAKI, Takao ; TADANAGA, Kiyoharu ; TATSUMISAGO, Masahiro ; MINAMI, Tsutomu
著者名 MATSUDA, Atsunori 松田, 厚範
著者名 KANZAKI, Takao 勘崎, 廷夫
e-Rad_Researcher 90244657 著者名 TADANAGA, Kiyoharu 忠永, 清治
著者名 TATSUMISAGO, Masahiro 辰巳砂, 昌弘
著者名 MINAMI, Tsutomu 南, 努
言語	英語
キーワード	Proton conduction
	Phosphosilicate gel
	Phosphoric acid
	Medium temperature range
	Low humidity
発行日	2002-02-01
出版者	Ceramic Society of Japan
出版者	日本セラミックス協会
収録物名	Journal of the Ceramic Society of Japan
収録物名	日本セラミックス協会学術論文誌
巻(号)	110(1278)
ページ	131-134
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution-NoDerivatives 4.0 International
PISSN	0914-5400
EISSN	1882-1022
NCID	AN10040326
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.2109/jcersj.110.131