New DMFC anode structure consisting of platinum nanowires deposited into a Nafion membrane
New DMFC anode structure consisting of platinum nanowires deposited into a Nafion membrane
复制标题
DOI：
10.1021/jp0711747
复制
发表时间：
2007-05
影响因子：
3.7
通讯作者：
Zhenxing Liang;T. Zhao
中科院分区：
文献类型：
--
作者：
Zhenxing Liang;T. Zhao
我们提出了一种新的DMFC阳极结构，由电化学沉积到Nafion膜的部分层中的铂纳米线组成。在这种Pt-Nafion集成电极中形成的铂纳米线网络不仅提供电子传导路径，而且还充当甲醇氧化反应的催化剂，而没有Pt的膜的剩余部分保持作为电解质的功能。透射电子显微镜（TEM）图像显示Pt纳米线均匀分布在膜的部分层中，直径在2 ~ 3 nm之间。循环伏安测试表明，Pt−Nafion集成电极具有比传统E-TEK电极更大的电化学活性表面积。具有这种新的阳极结构的DMFC表现出较低的甲醇渗透率，作为将Pt纳米线并入膜的亲水性孔的结果。DMFC的性能测试进一步表明...
We propose a new DMFC anode structure consisting of platinum nanowires that are electrochemically deposited into the partial layer of a Nafion membrane. The formed platinum-nanowire network in such a Pt−Nafion integrated electrode not only provides the electron conduction paths but also functions as the catalyst for the methanol oxidation reaction, while the remaining part of the membrane with no Pt keeps on the function as the electrolyte. Transmission electron microscopy (TEM) images showed that Pt nanowires were uniformly distributed into the partial layer of the membrane, with the diameter ranging from 2 to 3 nm. Cyclic voltammetry tests showed that the Pt−Nafion integrated electrode possessed a larger electrochemically active surface area than did the conventional E-TEK electrode. The DMFC with this new anode structure demonstrated a lower rate of methanol crossover as the result of the incorporation of Pt nanowires into the hydrophilic pores of the membrane. The DMFC performance test further showed ...