Porous palladium copper nanoparticles for the electrocatalytic oxidation of methanol in direct methanol fuel cells
文献类型：期刊论文
| 作者 | Shih ZY ; Wang CW ; Xu GB ; Chang HT |
| 刊名 | journal of materials chemistry a
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:15页码:4773-4778 |
| 关键词 | OXYGEN REDUCTION REACTION FORMIC-ACID OXIDATION WALLED CARBON NANOTUBES NANOPOROUS PDCU ALLOY ALCOHOL OXIDATION FACILE SYNTHESIS CO OXIDATION ELECTROOXIDATION PLATINUM NANOCRYSTALS |
| ISSN号 | 2050-7488 |
| 通讯作者 | shih zy |
| 中文摘要 | a facile method has been demonstrated for the preparation of pdcu nanoparticles (nps) with various morphologies from pd2+ and cu2+ reduced by ascorbate in the presence of dodecyltrimethylammonium chloride (dtac) at 95 degrees c. we have found that dtac is important to assist the growth of pdcu with high-energy surfaces through the etching and capping of certain surfaces of pd and pdcu seeds. by varying the pd2+/cu2+ molar ratio, different morphologies of pdcu nps have been prepared. cubic pdcu nps have a dominant pd3cu composition when prepared at a high pd2+/cu2+ molar ratio (20/1), while porous pdcu nps have a dominant pdcu3 composition when prepared at a low pd2+/cu2+ molar ratio (1/10). the copper content not only controls the morphology, but also affects the catalytic activity toward the methanol oxidation reaction (mor) in alkaline media. upon increasing the copper content, the catalytic activity toward the mor increases, mainly due to the advantages of the electroactive surface area, more direct cathodic oxide reduction (lower onset potential for the formation of pd-oh), and synergistic effects. porous pdcu np-modified electrodes provide a higher catalytic activity (363 a g(-1)) toward the mor at a more negative onset potential (-0.62 v vs. ag/agcl) on the porous pdcu electrodes than commercial pd/c-modified ones do (180 a g(-1)) at -0.52 v. to the best of our knowledge, this is the first example using porous pdcu np-modified electrodes as anodes under alkaline conditions in direct methanol fuel cells (dmfcs). with the advantages of high electrochemical activity, stability, and cost effectiveness, the porous pdcu nps have great potential as anode catalysts for dmfcs. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000316282800021 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50339]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Shih ZY,Wang CW,Xu GB,et al. Porous palladium copper nanoparticles for the electrocatalytic oxidation of methanol in direct methanol fuel cells[J]. journal of materials chemistry a,2013,1(15):4773-4778. |
| APA | Shih ZY,Wang CW,Xu GB,&Chang HT.(2013).Porous palladium copper nanoparticles for the electrocatalytic oxidation of methanol in direct methanol fuel cells.journal of materials chemistry a,1(15),4773-4778. |
| MLA | Shih ZY,et al."Porous palladium copper nanoparticles for the electrocatalytic oxidation of methanol in direct methanol fuel cells".journal of materials chemistry a 1.15(2013):4773-4778. |
入库方式： OAI收割
来源：长春应用化学研究所
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