Water vapor absorption and proton conductivity of (Ba1−xLax)2In2O5+x
2006
Kakinuma, Katsuyoshi | Tomita, Aya | Yamamura, Hiroshi | Atake, Tooru
The proton conductivity of (Ba₁₋ₓLaₓ)₂In₂O₅₊ₓ system has been investigated as a function of the La content, temperature and amount of absorbed water. The proton conductivity increased with La content up to x = 0.10, to reach a maximum of 1.12 × 10⁻⁵ (S/cm) at 400 °C. From that point on, it decreased. From the results of thermogravimetry and mass spectra, we confirmed that the water was absorbed in the (Ba₁₋ₓLaₓ)₂In₂O₅₊ₓ system, in a maximum quantity of 0.14 mol/mol (sample). The proton conductivity increased monotonically with the quantity of water uptake, suggesting that this variable is one of the dominant parameter of proton conductivity in this system.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library