| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 |
18권 2호, p.1945 |
| 발표분야 |
에너지 |
| 제목 |
Intermediate-temperature, non-humidified fuel cells with highly proton-conducting inorganic electrolyte |
| 초록 |
Proton conductors capable of operation at intermediate temperature of 100–300 °C and under non-humidified conditions are required for fuel cell system with lower cost and higher efficiency. Various types of anhydrous proton conductors have been investigated thus far. Recently, several metal pyrophosphates have been reported to exhibit relatively high proton conductivity at the intermediate temperatures. In this study, a series of AIII0.5BV0.5P2O7 compounds were investigated as promising proton conductors (AIII and BV denote trivalent and pentavalent metals, respectively). A series of AIII0.5BV0.5P2O7 compounds were synthesized, of which In0.5Sb0.5P2O7, Fe0.5Nb0.5P2O7, and Fe0.5Ta0.5P2O7 exhibited the highest proton conductivities in the intermediate temperature, in non-humidified air. The proton conductivity of these compounds was further enhanced by the introduction of AIII or BV deficiency into the bulk. Consequently, Fe0.4Ta0.5P2O7 exhibited the highest proton conductivities of 0.06 S cm-1 at 100 °C and 0.27 S cm-1 at 300 °C. We also demonstrated a non-humidified hydrogen-air fuel cell using Fe0.4Ta0.5P2O7 as an electrolyte in the temperature range. |
| 저자 |
허필원1, 김기현1, 박찬호1, 최경환1, Takashi Hibino2
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| 소속 |
1삼성종합기술원, 2Nagoya Univ. |
| 키워드 |
Intermediate temperature; Non-humidified condition; Inorganic proton conductor; Fe0.4Ta0.4P2O7
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| E-Mail |
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| VOD |
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| 원문파일 |
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