摘要
采用浸渍法合成了Pt/C及Pt-SnO2/C催化剂。SEM结果表明:催化剂存在团聚现象,颗粒较大。循环伏安法(CV)研究表明:与Pt/C相比,Pt-SnO2/C不但降低了甲醇氧化的起峰电位(约0.2 V),并提高了电催化活性。SnO2有利于形成OH-吸附,加速了甲醇氧化中间体CO的脱附。
The Pt/C and Pt-SnO2/C catalysts were synthesized by the impregnation method. The SEM result showed that the reunion and large grains were found on catalysts. The cyclic vohammetry （CV） method test indicated that compared with Pt/C, the Pt-SnO2/C not only decreased the methanol oxidation potential （about 0.2 V）, also increased its electrocatalytic activity. SnO2 favored the OH^- adsorption. It accelerated the desorption of CO which was the intermediate product in the CH3OH oxidation.
出处
《电池》
CAS
CSCD
北大核心
2006年第6期420-422,共3页
Battery Bimonthly
