Shell-Core Type Proton Conducting TiP2O7-Based Solid Electrolytes |
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| Journal | Key Engineering Materials (Volume 388) |
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| Volume | Electroceramics in Japan XI |
| Edited by | Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki |
| Pages | 57-60 |
| DOI | 10.4028/www.scientific.net/KEM.388.57 |
| Citation | Satoshi Tanimoto et al., 2008, Key Engineering Materials, 388, 57 |
| Online since | September, 2008 |
| Authors | Satoshi Tanimoto, Shunsuke Hirukawa, Takaaki Shirai, Shunsuke Sato, Tomohiro Kusano, Morihiro Saito, Jun Kuwano, Hidenobu Shiroishi |
| Keywords | Diphosphate, Ionic Conductivity, Proton, Shell-Core, Sol-Gel Method, Solid Electrolyte |
| Abstract | Shell-core type TiP2O7-based electrolytes were synthesized by a low-temperature sol-gel method, and their conductivities were investigated by ac-impedance spectroscopy. The samples heat-treated at 500°C showed higher proton conductivities of 3.8 × 10-2 - 1 × 10-2 Scm-1 at intermediate temperatures (100 - 300°C). The conductivity decreased by reheat-treatments at 600°C and 700°C due to a decrease in the amount of the conductive amorphous shells. However, the mechanical strength of the sample pellet significantly increased by the reheat-treatment. The sample reheat-treated at 600°C kept high conductivities of 8.8 × 10-3 - 1 × 10-3 Scm-1 in a range of 100°C - 300°C. |
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