Improvement of conversion efficiency of solid oxide fuel cell to apply to electric vehicle

提高固体氧化物燃料电池的转换效率以应用于电动汽车

• 批准号: 10558071
• 负责人: IHARA Manabu
• 金额: $ 6.91万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10558071/
• 关键词: fuel cell electric vehicle; hydrocarbon fuel; dry methane; solid oxide; fuel cell; GDC; anode reaction mechanism; 電気自動車; ドライメタン燃料

Stable power generation from a solid oxide fuel cell (SOFC) with a Ni/Gd-doped CeO_2 Cermet (GDC) anode in 100% dry-methane (CH_4) fuel was achieved at a maximum power density of 17OmW/cm^2 at 900 °C. The SOFC did not degrade even after 120 h of operation. The DC polarization of the Ni/GDC anode in hydrogen (H_2) fuel and in 4.5% dry-methane fuel was measured (by using the current interruption method) and then compared with those of Ni/YSZ, Pt/YSZ and Pt anodes. The apparent reaction orders of the oxygen activity for Ni/GDC anodes in both hydrogen fuel and 4.5% dry-methane fuel were smaller than those for Ni/YSZ, Pt/YSZ, and Pt anodes. Based on the previously proposed anode reaction mechanism for Ni/YSZ and Pt/YSZ anodes in hydrogen fuel and 4.5% dry-methane fuel, the stable power generation of the SOFC with the Ni/GDC anode in 100% dry-methane fuel was probably due to the high equilibrium constant between the oxygen in YSZ and the oxygen on the three-phase boundary on the anodes.

采用Ni/Gd掺杂CeO_2金属陶瓷（GDC）阳极的固体氧化物燃料电池（SOFC）在900 °C下以100%的干甲烷（CH_4）为燃料实现了稳定的发电，最大功率密度为170 mW/cm^2。SOFC即使在运行120 h后也没有降解。用电流中断法测量了Ni/GDC阳极在氢燃料和4.5%干甲烷燃料中的直流极化，并与Ni/YSZ、Pt/YSZ和Pt阳极进行了比较。在氢燃料和4.5%干甲烷燃料中，Ni/GDC阳极的氧活性的表观反应级数均小于Ni/YSZ、Pt/YSZ和Pt阳极。基于先前提出的Ni/YSZ和Pt/YSZ阳极在氢燃料和4.5%干甲烷燃料中的阳极反应机理，具有Ni/GDC阳极的SOFC在100%干甲烷燃料中的稳定发电可能是由于YSZ中的氧与阳极上的三相边界上的氧之间的高平衡常数。

项目成果

Jan Van herie, Manabu Ihara et al.: "Improved tubular SOFC for quick thermal cycling"Proc. of 4th European Solid Oxide Fuel Cell Forum. 2. 251-260 (2000)

Jan Van herie、Manabu Ihara 等人：“用于快速热循环的改进管状 SOFC”Proc。

Manabu Ihara et al.: "Effect of the steam-methane ratio on reactions occuring on Ni/Yttria-stabilized zirconia cermet anodes used in solid oxide fuel cells"Journal of Electrochemical Society. 146. 2481-2487 (1999)

Manabu Ihara 等人：“蒸汽与甲烷比例对固体氧化物燃料电池中使用的镍/氧化钇稳定氧化锆金属陶瓷阳极上发生的反应的影响”电化学学会杂志。

Manabu Ihara et al.: "Similarity and difference of DC polarization characteristics and electrode reactions between Ni/YSZ anodes and Pt/YSZ anodes in SOECs with dry CH4 fuel"Proc. of 7th International Symposium on Solid Oxide Fuel Cells (SOFC VII)(Electro

Manabu Ihara 等人：“使用干 CH4 燃料的 SOEC 中 Ni/YSZ 阳极和 Pt/YSZ 阳极之间的直流极化特性和电极反应的相似性和差异”Proc。

Jan Van herie, Manabu Ihara et al.: "Concept and Technology of SOFC for Electric Vehicles"Solid State Ionics. 132. 333-342 (2000)

Jan Van herie、Manabu Ihara 等人：“电动汽车 SOFC 的概念和技术”固态离子学。

Jan Van herle, Manabu Ihara, et al.: "Concept and Technology of SOFC for Electric Vehicles"Solid State Ionics. 132. 333-342 (2000)

Jan Van Herle、Manabu Ihara 等人：“电动汽车 SOFC 的概念和技术”固态离子学。