Electrocatalytical Property of Hybrid AuPd/Polyaniline/AO-MWCNTs Nanomaterials for Direct Formic Acid Fuel Cells

• Main Authors: Meng-Yuan Chung, 鍾夢緣
• Other Authors: Yuh-Jing Chiou
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/78890833710059292924

碩士 === 大同大學 === 化學工程學系(所) === 104 === DFAFCs (direct formic acid fuel cells) can be a promising green energy which will not increase the carbon dioxide concentration. In order to promote the efficiency of DFAFCs, the prepared nano palladium catalyst should have good electrocatalytic performance and stability to be applied as anodic catalyst for formic acid oxidation. This study used conductive polymer Polyaniline (PANI) to modified AO-MWCNTs. Two PANI to AO-MWCNTs proportions of 20:80 and 80:20 were prepared as PANI/AO-MWCNTs-20/80 and PANI/AO-MWCNTs-80/20 as the catalyst supporters. This PANI modification is expected to suppress electron trapping by defect on the surface of AO-MWCNTs and enhance the conductivity of the electrocatalyst. Three Pd synthesizing methods, x-ray photosynthesis, NaBH4 reduction and polyol method, are applied to deposit Pd or AuPd nanoparticles on PANI modified AO-MWCNTs. The composition, structure and morphology are analyzed by Raman、TGA、FTIR、XRD、SEM、HRTEM, and ICP respectively. The results show that PANI synthesized by chemical method were successfully coated on MWCNTs, the excessive PANI coated on MWCNTs cause the metal difficult to coated. The Pd or AuPd particle size of metal is around to 1~10 nm. 01A-Pd/(PANI/AO-MWCNTs)-(20/80) has the best electrocatalytical performance. It reveals that the PANI modification can enhance Pd catalytic ability of formic acid oxidation.