Intermediate temperature fuel cells via an ion-pair coordinated polymer electrolyte†,Energy & Environmental Science

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Intermediate temperature fuel cells via an ion-pair coordinated polymer electrolyte†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-03-01 00:00:00 , DOI: 10.1039/c7ee03595k
Kwan-Soo Lee _{1,

2,

3} , Sandip Maurya _{1,

2,

3} , Yu Seung Kim _{1,

2,

3} , Cortney R. Kreller _{1,

2,

3} , Mahlon S. Wilson _{1,

2,

3} , Dennis Larsen _{3,

4,

5} , S. Elango Elangovan _{3,

4,

5} , Rangachary Mukundan _{1,

2,

3}

Affiliation

Fuel cells are attractive devices that convert chemical energy into electricity through the direct electrochemical reaction of hydrogen and oxygen. Intermediate temperature fuel cells operated at 200–300 °C can simplify water and thermal managements, enable the use of non-precious or low-loading precious metal catalysts and provide insensitivity toward fuel and air impurities such as carbon monoxide. However, the performance of current intermediate temperature fuel cells is poor due to a lack of highly-conductive membrane electrolytes and optimal electrodes designed for these fuel cells. Here, we demonstrate high-performing intermediate temperature fuel cells that use SnP₂O₇–polymer composite membranes and a quaternary ammonium-biphosphate ion-pair coordinated polymer electrolyte in the electrodes. The peak power density of the fuel cell under H₂ and O₂ reached 870 mW cm⁻² at 240 °C with minimal performance loss under exposure to 25% carbon monoxide.

中文翻译：

通过离子对配位聚合物电解质的中温燃料电池†

燃料电池是有吸引力的设备，它们通过氢和氧的直接电化学反应将化学能转化为电能。在200–300°C下运行的中温燃料电池可以简化水和热管理，可以使用非贵重或低负载的贵金属催化剂，并且对燃料和空气杂质（例如一氧化碳）不敏感。然而，由于缺少高导电性膜电解质和为这些燃料电池设计的最佳电极，当前的中温燃料电池的性能很差。在这里，我们演示了使用SnP ₂ O ₇的高性能中温燃料电池-电极中的聚合物复合膜和季铵-磷酸二氢根离子对配位的聚合物电解质。在240°C下，H ₂和O ₂下燃料电池的峰值功率密度达到870 mW cm ^-2，而暴露于25％一氧化碳下的性能损失最小。

更新日期：2018-03-01

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