Performance of PEM fuel cells stack as affected by number of cell and gas flow-rate

1st International Symposium on Green Technology for Value Chains 2016

工业技术;生态环境科学

Syampurwadi, A.^1 ; Onggo, H.^1 ; Indriyati^1 ; Yudianti, R.^1

Research Unit for Clean Technology, Indonesian Institute of Sciences (LIPI), Jalan Cisitu 21/154 D, Bandung

40135, Indonesia^1

关键词: Flow configurations;    Gas diffusion electrodes;    High power density;    Low operating temperature;    Membrane electrode assemblies;    Nafion 117 membranes;    Operating temperature;    Portable power supplies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/60/1/012029/pdf
DOI  :  10.1088/1755-1315/60/1/012029

来源: IOP

【 摘 要 】

The proton exchange membrane fuel cell (PEMFC) is a promising technology as an alternative green energy due to its high power density, low operating temperatures, low local emissions, quiet operation and fast start up-shutdown. In order to apply fuel cell as portable power supply, the performance investigation of small number of cells is needed. In this study, PEMFC stacks consisting of 1, 3, 5 and 7-cells with an active area of 25 cm2per cell have been designed and developed. Their was evaluated in variation of gas flow rate. The membrane electrode assembly (MEA) was prepared by hot-pressing commercial gas diffusion electrodes (Pt loading 0.5 mg/cm2) on pre-treated Nafion 117 membrane. The stacks were constructed using bipolar plates in serpentine pattern and Z-type gas flow configuration. The experimental results were presented as polarization and power output curves which show the effects of varying number of cells and H2/O2flow-rates on the PEMFC performance. The experimental results showed that not only number of cells and gas flow-rates affected the fuel cells performance, but also the operating temperature as a result of electrochemistry reaction inside the cell.