Study of Nano-Composite Proton Conducting Membranes for an Intermediate-Temperature H2S Solid Oxide Fuel Cell
Nano-composite proton conducting membranes of an intermediate-temperature H2S solid oxide fuel cell were prepared using a sol-gel technique. The membranes have been characterized and observed using scanning electron microscope (SEM) and energy dis-persive X-ray (EDX). Electrolyte performance prepared by a conventional route and a new technique of gel-solution preparation was compared. Relation of ionic conductivity performance of micro and nano-composite electrolytes of Li2S04 + A1203 with temperature variation was explored. The microstructure, compactivity, mechanical strength, and conductivity of membranes were improved comparing with those of the same bulk composition prepared from mixtures of lithium sulfate as well as alumina powder. The remarkable enhancement in ionic conductivity was obtained for nano-composite Li2SO4 + Al2O3. The less gas crossover and better stability of an intermediate-temperature H2S solid oxide fuel cell with nano-composite Li2SO4 + Al2O3 proton-conducting membranes were observed, and the maximum power density of up to 135 mW·cm-2 and maximum current density of about 480 mA·cm-2 were achieved at 750t and 101.13kPa.
intermediate-temperature solid oxide fuel cell (ITSOFC) proton-conducting membrane hydrogen sulfide
ZHONG Li WEI Guo-lin LUO Jing-li CHUANG Karl
College of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, Department of Chemical and Materials Engineering, University of Alberta,Edmonton, Alberta, Canada, T
国际会议
北京
英文
144-146
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）