期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 2, 页码 1134-1147出版社
AMER CHEMICAL SOC
DOI: 10.1021/am2018628
关键词
diamond nanoparticles; Pt-Ru catalyst; membrane electrode assembly; fuel cell; methanol oxidation
资金
- NSF Center for Hierarchical Manufacturing at the University of Massachusetts [CMMI-0531171]
- NASA-URC Center for Advanced Nanoscale Materials [NNX10AQ17A]
- NSF-EPSCoR Institute for Functional Nanomaterials [OIA-0701525, EPS-1002410]
- National Science Foundation, Materials Research Science and Engineering Centers [DMR-0520404]
Diamond in nanoparticle form is a promising material that can be used as a robust and chemically stable catalyst support in fuel cells. It has been studied and characterized physically and electrochemically, in its thin film and powder forms, as reported in the literature. In the present work, the electrochemical properties of undoped and boron-doped diamond nanoparticle electrodes, fabricated using the ink-paste method, were investigated. Methanol oxidation experiments were carried out in both half-cell and full fuel cell modes. Platinum and ruthenium nanoparticles were chemically deposited on undoped and boron doped diamond nanoparticles through the use of NaBH4 as reducing agent and sodium dodecyl benzene:sulfonate (SDBS) as a surfactant. Before and after the reduction process, samples were characterized by electron microscopy and spectroscopic techniques. The ink-paste method was also used to prepare the membrane electrode assembly with Pt and Pt-Ru modified undoped and boron-doped diamond nanoparticle catalytic systems, to perform the electrochemical experiments in a direct methanol fuel cell system. The results obtained demonstrate that diamond supported catalyst nanomaterials are promising for methanol fuel cells.
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