標題: Novel Bilayer Composite Membrane for Passive Direct Methanol Fuel Cells with Pure Methanol
作者: Tsai, Li-Duan
Chien, Hung-Chung
Huang, Wei-Han
Huang, Chiu-Ping
Kang, Chi-yun
Lin, Jiunn-Nan
Chang, Feng-Chih
應用化學系
Department of Applied Chemistry
關鍵字: Nafion;sulfonated graphene oxide;sulfonated activated carbon;methanol crossover;direct methanol fuel cells
公開日期: 1-七月-2013
摘要: The bilayer composite membrane composed of the sulfonated graphene oxide (SGO)/Nafion and sulfonated activated carbon (SAC)/Nafion composite membrane is designed and prepared by repeatedly bar-coating. With the carefully chosen of solvent, the bilayer composite membrane has shown identical thickness on SEM observation. The SGO/Nafion side has a low methanol permeability ascribed to the unique selectivity of the SGO. Moreover, the SAC side has good water retention which can facilitate the back diffusion water produced by the cathode. The unique design of composite membranes confers low methanol crossover and high proton conductivity at the same time. The bilayer composite membrane shows better power density than Nafion 212 and Nafion 115 and the performance monitored for 24h to ensure the stable power density and the durability of the membrane.
URI: http://hdl.handle.net/11536/22608
ISSN: 1452-3981
期刊: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume: 8
Issue: 7
起始頁: 9704
結束頁: 9713
顯示於類別:期刊論文