作者: Reza B. Moghaddam , Samaneh Shahgaldi , Xianguo Li
DOI: 10.1007/S11708-017-0492-4
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摘要: High activity catalyst with simple low-cost synthesis is essential for fuel cell commercialization. In this study, a facile procedure the of cube-like Pt nanoparticle (PtCube) composites high surface area carbon supports developed by mixing precursor in organic batches, hence, one pot synthesis. The PtCube grow Vulcan XC-72 or Ketjen black, respectively, and then treated 5.5 h at 185oC (i.e., PtCube5.5/V PtCube5.5/K). resulting particle sizes shapes are similar; however, PtCube5.5/K has larger electrochemical active (EASA) remarkably better formic acid (FA) oxidation performance. Optimization PtCube/K leads to PtCube10/K that been 10 185oC. With EASA, also more FA than other composites. Impedance spectroscopy analysis temperature asprepared untreated) indicates less resistive, highest limiting capacitance among electrodes. Consistently, voltammetric EASA largest PtCube10/K. Furthermore, compared two commercial Pt/C catalysts, Tanaka Kikinzoku Kogyo (TKK), Johnson Matthey (JM)Pt/C catalysts. TKK higher PtCube10/K, as expected from their relative particles (3–4 nm vs. 6–7 PtCube10/K), significantly activity.