Preparation of cathode catalyst layer with composite of electrospun Pt nanofibers and Pt/C on the performance of a PEMFC

• Main Authors: Ming-Tung Sung, 宋明棟
• Other Authors: Ming-Hsing Chang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/58835412099709605504

碩士 === 大同大學 === 機械工程學系(所) === 101 === In this study, the electrospinning method was used to fabricate the catalyst layer for a proton exchange membrane fuel cell (PEMFC). The corresponding membrane electrode assembly (MEA) was also made by hot press and the fuel cell performance has been tested. The electrospun nanofibers were produced by electrospun solution made of PVP polymer mixed with Pt precursor (H2PtCl6) to be catalyst layers. Besides, the cathode catalyst layer was fabricated by different mixing ratio of Pt/C and Pt nanofibers and the performance was tested. The Pt nanofibers are sprayed on carbon cloth and then hot-pressed together with Nafion 117 membrane to form the MEA. The different Pt loading with composite of Pt/C and Pt nanofibers and Nafion contents were mixed to produce cathode catalyst layer. Then, analyzing the best parameters of catalyst layer and performance of fuel cell. The results indicated that cathode catalyst layers fabricated only by Pt nanofibers couldn’t enhance the performance of fuel cell, but the traditional Pt/C mixed with fitting ratio of Pt nanofibers could enhance the performance effectively. Results showed that the performance is fine, when loading ratio of Pt is 1:4 in the mixture of Pt nanofibers and Pt/C. Then finding out the best Nafion content with the mixing ratio of Pt, the fuel cell have the best performance with 30% content of Nafion.