Micro reactor integrated μ-PEM fuel cell system: a feed connector and flow field free approach
[摘要] A system level microreactor concept for hydrogen generation with Sodium Borohydride (NaBH4) is demonstrated. The uniqueness of the system is the transport and distribution feature of fuel (hydrogen) to the anode of the fuel cell without any external feed connectors and flow fields. The approach here is to use palladium film instead of feed connectors and the flow fields; palladium's property to adsorb and desorb the hydrogen at ambient and elevated condition. The proof of concept is demonstrated with a polymethyl methacrylate (PMMA) based complete system integration which includes microreactor, palladium transport layer and the self-breathing polymer electrolyte membrane (PEM) fuel cell. The hydrolysis of NaBH4was carried out in the presence of platinum supported by nickel (NiPt). The prototype functionality is tested with NaBH4chemical hydride. The characterization of the integrated palladium layer and fuel cell is tested with constant and switching load. The presented integrated fuel cell is observed to have a maximum power output and current of 60 mW and 280 mA respectively.
[发布日期] [发布机构] Laboratory for Process Technology, IMTEK-Department of Microsystem Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany^1
[效力级别] 能源学 [学科分类]
[关键词] Distribution features;Hydrogen generations;Maximum power output;Palladium layers;PEM fuel cell system;Polymer electrolyte membranes;Sodium borohydrides;Transport layers [时效性]