TY - JOUR
T1 - Long-term stability of sulfated hydrous titania-based electrolyte for water electrolysis
AU - Kim, Seok Jun
AU - Sakai, Takaaki
AU - Oda, Hiroyuki
AU - Okuyama, Yuji
AU - Mizutani, Yumi
AU - Hamagami, Jun Ichi
AU - Matsuka, Maki
AU - Ishihara, Tatsumi
AU - Matsumoto, Hiroshige
N1 - Funding Information:
This study was supported by the Industrial Technology Research Grant Program in from New Energy and Industrial Technology Development Organization and by the Research Fellow of the Japan Society for the Promotion of Science and by World Premium International Research Center Initiative (WPI), MEXT, Japan.
PY - 2012/11
Y1 - 2012/11
N2 - The long-term stability in water was investigated for an inorganic proton conductor based on sulfated hydrous titania electrolyte in water electrolysis. Heat treatment temperature in the range of 400-700 °C during synthesis of the material was chosen as the critical parameter for the conductivity and stability in water. Electric resistance of the membrane electrode assembly using the sulfated hydrous titania in water and pH were investigated by the effect of heat treatment temperature on the stability of conductivity and acid detachment. TG, Fourier transform infrared spectroscopy, and energy-dispersive X-ray analysis measurements were performed to understand the amount and state of the sulfate groups on the surface of sulfated hydrous titania. Heat treatment at 650 °C was found to obtain good conduction behavior for the sulfated hydrous titania and was confirmed to work for a stable water electrolysis.
AB - The long-term stability in water was investigated for an inorganic proton conductor based on sulfated hydrous titania electrolyte in water electrolysis. Heat treatment temperature in the range of 400-700 °C during synthesis of the material was chosen as the critical parameter for the conductivity and stability in water. Electric resistance of the membrane electrode assembly using the sulfated hydrous titania in water and pH were investigated by the effect of heat treatment temperature on the stability of conductivity and acid detachment. TG, Fourier transform infrared spectroscopy, and energy-dispersive X-ray analysis measurements were performed to understand the amount and state of the sulfate groups on the surface of sulfated hydrous titania. Heat treatment at 650 °C was found to obtain good conduction behavior for the sulfated hydrous titania and was confirmed to work for a stable water electrolysis.
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U2 - 10.1007/s10008-012-1793-5
DO - 10.1007/s10008-012-1793-5
M3 - Article
AN - SCOPUS:84868628760
SN - 1432-8488
VL - 16
SP - 3587
EP - 3592
JO - Journal of Solid State Electrochemistry
JF - Journal of Solid State Electrochemistry
IS - 11
ER -