Dedy Eka Priyanto, Hidenobu Shiroishii, Satoshi Tanimoto, Shunsuke Hirukawa, Morihiro Saito, Jun Kuwano
ASIAN CERAMIC SCIENCE FOR ELECTRONICS III AND ELECTROCERAMICS IN JAPAN XII 421-422 471-+ 2010年
Proton conducting ZrO2-yP(2)O(5) (y = 1.0, 1.2, 1.4, 1.6, 1.8) electrolytes based on a shell-core structure were synthesized with diammonium hydrogen phosphate by a solid state reaction, and their conductivities were investigated by ac-impedance spectroscopy. Among the ZrO2-yP(2)O(5) compositions, ZrO2-1.6P(2)O(5) showed the highest proton conductivity of 0.13 Scm(-1) at 250 degrees C. The conductivity increased with increasing P2O5 molar ratio and were significantly influenced by heat-treatments in the preparation process. Polytetraflouroethylene (PTFE) was also mixed into these electrolytes in order to improve the mechanical strength and long term durability.