On-board hydrogen production by hydrolysis from designed Al–Cu alloys and the application of this technology to polymer electrolyte membrane fuel cells

摘要: Abstract Al–Cu alloys containing various amounts of Cu (2–5 wt.%) are designed to increase the hydrogen production rate in an alkaline solution by precipitating electrochemically noble Al 2 phase along grain boundary. All exhibit a microstructure with precipitates, which is solution, The generation increases as amount increases, and Al- 5 wt.% alloy exhibits 4.7 times greater than that pure Al. This significant affected combined action galvanic corrosion intergranular corrosion. When produced hydrolysis directly fed polymer electrolyte membrane fuel cell (PEMFC) anode, voltage stable value approximately 0.73 V without humidifier.