| 甲醇氧化PtSnCo/C阳极催化剂 |
| |
| 引用本文： | 李庆武,魏子栋,陈四国,齐学强,柳晓,丁炜,马宇.甲醇氧化PtSnCo/C阳极催化剂[J].物理化学学报,2011,27(12):2857-2862. |
| |
| 作者姓名： | 李庆武 魏子栋 陈四国 齐学强 柳晓 丁炜 马宇 |
| |
| 作者单位： | State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Chemistry andChemical Engineering, Chongqing University, Chongqing 400044, P. R. China |
| |
| 基金项目： | 国家自然科学基金，重庆大学985 创新人才培养建设计划，中央高校基础研究基金 |
| |
| 摘 要： | 通过乙二醇液相分步还原法制备了金属质量分数为20%的PtSn/C二元及PtSnCo/C三元催化剂.采用X射线衍射(XRD)光谱法、能量散射谱(EDS)对催化剂进行了表征;通过阳极线性伏安扫描法(LSV)、连续循环伏安法(CV)、预吸附单层CO溶出法研究了其电化学性质.结果表明,PtSnCo/C三元催化剂较商业化JM-PtRu/C催化剂具有更好的氧化甲醇催化活性.循环伏安扫描100圈后发现,PtSn/C二元催化剂的甲醇氧化峰电流快速衰减到其初始氧化峰电流的11%左右,而PtSnCo/C三元催化剂仅衰减到其初始值的50%左右,这表明PtSnCo/C三元催化剂具有更好的化学稳定性.在PtSnCo/C催化剂上,甲醇氧化起始电位比直接吸附CO后的CO阳极溶出电位负,意味着甲醇在PtSnCo/C催化剂上氧化的中间产物不是CO,而是比CO更为活泼且易于氧化的中间物种.
|
| 关 键 词： | 直接甲醇燃料电池 PtSnCo/C PtSn/C 稳定性 甲醇氧化 |
| 收稿时间： | 2011-05-04 |
| 修稿时间： | 2011-09-05 |
PtSnCo/C Anode Catalyst for Methanol Oxidation |
| |
| LI Qing-Wu,WEI Zi-Dong,CHEN Si-Guo,QI Xue-Qiang,LIU Xiao,DING Wei,MA Yu.PtSnCo/C Anode Catalyst for Methanol Oxidation[J].Acta Physico-Chimica Sinica,2011,27(12):2857-2862. |
| |
| Authors: | LI Qing-Wu WEI Zi-Dong CHEN Si-Guo QI Xue-Qiang LIU Xiao DING Wei MA Yu |
| |
| Institution: | State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Chemistry andChemical Engineering, Chongqing University, Chongqing 400044, P. R. China |
| |
| Abstract: | A binary metallic catalyst(PtSn/C) and a ternary metallic catalyst(PtSnCo/C) with a metal mass fraction of 20% were prepared by borohydride reduction and subsequent hydrothermal treatment in a glycol liquid phase.The structure and composition of the as-prepared electrocatalysts were characterized by X-ray diffraction(XRD) and energy-dispersive spectrometry(EDS).Their activity and stability for the catalysis of methanol oxidation were evaluated by anodic linear sweep voltammetry(LSV),cyclic voltammetry(CV),a... |
| |
| Keywords: | Dierct methanol fuel cell PtSnCo/C PtSn/C Stability Methanol oxidation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
|
