Pd nanoparticles supported on nitrogen doped carbon black （Vulcan XC-72R） with two different levels of doping were prepared by the microwave-assisted ethylene glycol reduction process and used as catalyst for the fo...Pd nanoparticles supported on nitrogen doped carbon black （Vulcan XC-72R） with two different levels of doping were prepared by the microwave-assisted ethylene glycol reduction process and used as catalyst for the formic acid electro-oxidation （FAEO）. The results indicate that the different nitrogen doping contents in Pd/N-C catalysts have a significant effect on the performance of FAEO. A higher N content facilitates the uniform dispersion of Pd nanoparticles on carbon black with narrow particle size distribution. Furthermore, the electrochemical results show that the catalyst with a higher N-doping content possesses a higher catalytic activity and a long-term stability for FAEO. The peak current density of the Pd/N-C （high） catalyst is 1.27 and 2.31 times that of the Pd/N-C （low） and homemade Pd/C-H catalyst. The present paper may provide a simple method for preparation of high-performance anode catalyst for direct formic acid fuel cells （DFAFCs）.展开更多
文摘Pd nanoparticles supported on nitrogen doped carbon black （Vulcan XC-72R） with two different levels of doping were prepared by the microwave-assisted ethylene glycol reduction process and used as catalyst for the formic acid electro-oxidation （FAEO）. The results indicate that the different nitrogen doping contents in Pd/N-C catalysts have a significant effect on the performance of FAEO. A higher N content facilitates the uniform dispersion of Pd nanoparticles on carbon black with narrow particle size distribution. Furthermore, the electrochemical results show that the catalyst with a higher N-doping content possesses a higher catalytic activity and a long-term stability for FAEO. The peak current density of the Pd/N-C （high） catalyst is 1.27 and 2.31 times that of the Pd/N-C （low） and homemade Pd/C-H catalyst. The present paper may provide a simple method for preparation of high-performance anode catalyst for direct formic acid fuel cells （DFAFCs）.
