Title :
Optimization of efficiency and energy density of passive micro fuel cells and galvanic hydrogen generators
Author :
Hahn, Robert ; Wagner, Stefan ; Krumbholz, Steffen ; Reichl, Herbert
Author_Institution :
Fraunhofer IZM, Berlin
Abstract :
A PEM micro fuel cell system is described which is based on self-breathing PEM micro fuel cells in the power range between 1 mW and 1 W. Hydrogen is supplied with on-demand hydrogen production with help of a galvanic cell, that produces hydrogen when Zn reacts with water. The system can be used as a battery replacement for low power applications and has the potential to improve the run time of autonomous systems. The efficiency has been investigated as function of fuel cell construction and tested for several load profiles.
Keywords :
fuel cells; micromechanical devices; efficiency optimization; energy density; galvanic hydrogen generators; low power applications; micro fuel cells; power 1 mW to 1 W; Assembly; Batteries; Biomembranes; Electrodes; Fuel cells; Fuel storage; Galvanizing; Hydrogen; Methanol; Power generation;
Conference_Titel :
Design, Test, Integration and Packaging of MEMS/MOEMS, 2008. MEMS/MOEMS 2008. Symposium on
Conference_Location :
Nice
Print_ISBN :
978-2-35500-006-5
DOI :
10.1109/DTIP.2008.4752947
