摘要
利用循环伏安方法电聚合导电高分子聚苯胺,应用到直接甲醇燃料电池(DMFC)中制备聚苯胺载Pt电极。电极的制备分两个步骤,首先电聚合载体聚苯胺,然后沉积催化剂Pt。聚苯胺载Pt电极的制备,提高了Pt的分散度,增加了Pt在电催化体系中的利用率。聚苯胺载铂电极(Pt/PANI/C)与直接碳载铂电极(Pt/C)通过比较甲醇的电催化氧化活性可知,Pt/PANI/C电极催化氧化甲醇的最大电流为50.7mA.cm-2,为Pt/C电极最大氧化电流7.6mA.cm-2的6.7倍。扫描电镜表征Pt/PANI/C电极上的铂颗粒大小为0.4μm左右。
Polyaniline electropolymerized onto carbon paper by the cyclic voltammetric method loaded Pt as electrode in direct methanol fuel cells. The fabrication of polyaniline with platinum catalyst particles consists of a two steps, first electropolymerization of aniline onto carbon paper, then electrodeposition of platinum. The polyaniline was found to have a significant bearing on separation of the platinum particles, which increases the level of platinum utilization in systems. The electroactivation of the methanol oxidized on carbon paper electrode（Pt/C） and on polyaniline electrode with Pt loading（Pt/PANI/C） were studied, the maximum oxidation current of methanol on Pt/PANI/C is 50.7mA·cm^-2, which is 6.7 times that on the Pt/C. Microscopy of the deposited electrocatalyst partides were investigated by SEM.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2006年第4期360-363,共4页
Acta Energiae Solaris Sinica
基金
国家自然科学基金资助项目(50274010
50074003)
国家高新技术研究发展计划(863)(2002AA-302404)
