| 摘要 |
A proton conductor gas sensor whose durability at high temperature is enhanced by using gel not converted to sol even at high temperature in a water reservoir. Fine particles of silica are gelled by adding water thereto and agitating the mixture under shear force. The thus obtained gel ( 34 ) is placed in a water reservoir of proton conductor gas sensor ( 2 ) and fed through steam introduction port ( 30 ) to MEA ( 10 ).
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