Kim, MinJoong Eom, KwangSup Kwon, JaeYoung Cho, EunAe Kwon, HyukSang 2024-01-20T13:33:03Z 2024-01-20T13:33:03Z 2021-09-04 2012-11-01 0378-7753 https://pubs.kist.re.kr/handle/201004/128666 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 the electrochemically noble Al2Cu phase along the grain boundary. All of the Al-Cu alloys exhibit a microstructure with Al2Cu precipitates, which is electrochemically noble to Al in an alkaline solution, along the grain boundary. The hydrogen generation rate of Al-Cu alloys increases as the amount of Cu increases, and the Al- 5 wt.% Cu alloy exhibits a 4.7 times greater hydrogen generation rate than that of pure Al. This significant increase in hydrogen generation is affected by the combined action of galvanic corrosion and intergranular corrosion. When hydrogen produced by the hydrolysis of Al Cu alloys is directly fed to a polymer electrolyte membrane fuel cell (PEMFC) anode, the cell voltage exhibits a stable value of approximately 0.73 V without a humidifier. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER BOROHYDRIDE SOLUTION SODIUM-BOROHYDRIDE ALUMINUM-ALLOYS GENERATION PERFORMANCE KINETICS On-board hydrogen production by hydrolysis from designed Al-Cu alloys and the application of this technology to polymer electrolyte membrane fuel cells Article 10.1016/j.jpowsour.2012.06.008 1 JOURNAL OF POWER SOURCES, v.217, pp.345 - 350 JOURNAL OF POWER SOURCES 217 345 350 scie scopus 000308782200052 2-s2.0-84863090184 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article BOROHYDRIDE SOLUTION SODIUM-BOROHYDRIDE ALUMINUM-ALLOYS GENERATION PERFORMANCE KINETICS Aluminum copper alloy Hydrolysis On-board hydrogen production Galvanic corrosion Intergranular corrosion Polymer electrolyte membrane fuel cells