Pt/C anodic catalysts with controlled morphology for direct dimethyl ether fuel cell: The role of consecutive surface

详细信息    查看全文

• 作者：Fengzhan Si^a ; ^c ; Xiumei Chen^a ; Liang Liang^a ; Chenyang Li^a ; Jianhui Liao^a ; Changpeng Liu^a ; Xinbo Zhang^b ; ^{xbzhang@ciac.jl.cn"" rel=""nofollow} ; Wei Xing^a ; ^{xingwei@ciac.jl.cn"" rel=""nofollow}
• 关键词：Electrooxidation ; Consecutive surface ; Anodic catalyst ; Direct dimethyl ether fuel cell ; Nanowires
• 刊名：Electrochimica Acta
• 出版年：2011
• 出版时间：1 July 2011
• 年：2011
• 卷：56
• 期：17
• 页码：5966-5971
• 全文大小：1401 K

文摘

Two types of Pt nanowires (NWs)/C catalysts with different aspect ratios and one type of Pt nanoparticles/C catalyst are successfully synthesized, and DME electrochemical performance on different extent consecutive surfaces is investigated. The morphology and crystallization are confirmed with electron microscopes and XRD. The electrochemical tests show that the nanowire catalysts, especially the one with higher aspect ratio, possess higher electrochemical surface areas, higher absorption capacity of DME, higher CO tolerance, higher electron transfer coefficient, and higher activity towards DME electrooxidation than those of the nanoparticle catalyst. The results prove that the consecutive surface favors for direct dimethyl ether fuel cell (DDFC) anodic catalyst, which are contributive to the study of the mechanism of DME electrooxidation on Pt surface and designing an effective catalyst for anodic DDFC.