A high-efficiency, compact design of open-cathode type PEMFCs with a hydrogen generation system

作者：Huang Zhen Ming; Su Ay^*; Hsu Che Jung; Liu Ying Chieh

来源：Fuel, 2014, 122: 76-81.

DOI：10.1016/j.fuel.2013.12.058

• PEMFC stacks
• Open-cathode
• Chemical hydrides
• Hydrogen generation
• Fuel cell system

In this paper we report on the development of a sub-kW fuel cell stack integrated with a NaBH4-based hydrogen generator. The fuel cell stack was built with 15 open-cathode PEMFCs and employed two fans to supply air for electrochemical reactions as well as for cooling. The open-cathode design simplifies the system%26apos;s balance-of-plant. The performance of the present YZFC-OA stack showed an optimum for air fan voltage at 9.0 V. A maximum power 355 W was recorded with H-2 inlet temperature 40 degrees C and stack voltage at 8 V. Reactant solution containing 20 wt.% NaBH4 and 3 wt.% NaOH was introduced into the structured catalyst at constant flow rate. For 14-pcs Ru catalyst and H2 rate of 6.08 L min (1) (0.43 L(H-2) min (1) g (1) catalyst), the conversion efficiency of hydrogen was about 87%. The performance and stability of the present YZFC-OA stack, and the feasibility of integrated stack and hydrogen generator have been demonstrated in this study.

• 出版日期2014-4-15