首页 | 本学科首页   官方微博 | 高级检索  
     


Preparation and properties of functionalized multiwalled carbon nanotubes/polypropylene nanocomposite bipolar plates for polymer electrolyte membrane fuel cells
Authors:Shu-Hang Liao   Cheng-Chih Weng   Chuan-Yu Yen   Min-Chien Hsiao   Chen-Chi M. Ma   Ming-Chi Tsai   Ay Su   Ming-Yu Yen   Yu-Feng Lin  Po-Lan Liu
Affiliation:aDepartment of Chemical Engineering, National Tsing Hua University, Hsin-Chu 30043, Taiwan, ROC;bDepartment of Engineering and System Science, National Tsing Hua University, Hsin-Chu 30043, Taiwan, ROC;cFuel Cell Center, Yuan Ze University, Tao-Yuan 32003, Taiwan, ROC;dPlastics Industry Development Center, Tai-Chung 40768, Taiwan, ROC
Abstract:Multiwalled carbon nanotubes (MWCNTs) are covalently modified with different molecular weights 400 and 2000 poly(oxyalkylene)-amine bearing the diglycidyl ether of bisphenol A (DGEBA) epoxy (POA400-DGEBA and POA2000-DGEBA) oligomers. The oxidized MWCNTs (MWCNTs-COOH) are converted to the acid chloride-functionalized MWCNTs, followed by the reaction with POA-DGEBAs to prepare the MWCNTs/POA400-DGEBA and MWCNTs/POA2000-DGEBA. FTIR, thermogravimetric analysis (TGA) and high resolution X-ray photoelectron spectra (XPS) reveal that the POA-DGEBAs are covalently attached to the surface of MWCNTs. The morphology of MWCNTs/POA-DGEBA is observed by TEM. The POA400-DGEBA coated on the MWCNTs is thicker and more uniform. However, the coating of POA2000-DGEBA on the MWCNTs shows a worm-like bulk substance and the MWCNT surface is bare. In addition, the flexural strength and the bulk electrical conductivity of the MWCNTs/polypropylene nanocomposite bipolar plates are measured 59% and 505% higher than those of the original composite bipolar plates by adding 8 phr of MWCNTs/POA400-DGEBA. The maximum current density and power density of the single cell test for the nanocomposite bipolar plate with 4 phr MWCNTs/POA400-DGEBA are 1.32 A cm−2 and 0.533 W cm−2, respectively. The overall performance confirms the functionalized MWCNTs/polypropylene nanocomposite bipolar plates prepared in this study are suitable for PEMFC application.
Keywords:Fuel cell   Bipolar plate   Nanocomposite   Functionalized carbon nanotube   Polypropylene
本文献已被 ScienceDirect 等数据库收录!
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