首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Fuel cell system with sodium borohydride hydrogen generator for small unmanned aerial vehicles
Authors:Eun Sang Jung  Hyuntak Kim  Sejin Kwon
Institution:1. Department of Bioenvironmental Energy, College of Natural Resource and Life Sciences, Pusan National University, Busan, Republic of Korea;2. Department of Aerospace Engineering, School of Mechanical and Aerospace Engineering, College of Engineering, KAIST, Daejeon, Republic of Korea
Abstract:A 100 W proton exchange membrane fuel cell (PEMFC) system with a sodium borohydride (NaBH4) hydrogen generator was investigated for small unmanned aerial vehicles (UAVs). The performance of a cobalt–phosphorous/nickel foam catalyst was evaluated to determine the change in catalytic activity under real operating conditions. The response time increased owing to oxidation of the metals and accumulation of sodium; however, the catalyst remained active at high reaction temperatures. A NaBH4 hydrogen generator with the catalyst was developed for a 100 W PEMFC system. The hydrogen generation rate was stable for 3 h, and the conversion efficiency was 97.8%. Finally, a 100 W PEMFC system with the NaBH4 hydrogen generator was investigated for small UAVs. The maximum power and energy density of the PEMFC system were 95.96 W and 185.2 Wh/kg, respectively.
Keywords:Cobalt–phosphorous/nickel foam catalyst  hydrolysis  proton exchange membrane fuel cell  sodium borohydride  unmanned aerial vehicle
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号