摘要
采用水热法制备了高分散碳载Pt/C和Pt-SnO2/C电催化剂。采用XRD、SEM、TEM和激光粒度仪等方法对制得的纳米催化剂进行了表面微观结构分析。采用电化学工作站测试循环伏安曲线(CV)等表征Pt/C和Pt-SnO2/C纳米催化剂电催化活性。测试结果表明,Pt-SnO2/C纳米催化剂的峰电流密度(131.05 m A·cm-2)是Pt/C催化剂的峰电流密度(65.48 m A·cm-2)的2倍;Pt-SnO2/C催化的电化学表面积(108.4 m2·g-1)远高于Pt/C催化剂的电化学表面积(99.14 m2·g-1);Pt-SnO2/C纳米粒子比Pt/C纳米粒子具有更强的抗CO中毒能力和更高的电催化活性。
Highly dispersed carbon supported Pt/C and Pt-SnO2/C anode catalysts are prepared by hydrothermal method.X-ray diffraction（ XRD）,scanning electron microscopy（ SEM）,transmission electron microscopy（ TEM） and Laser particle size analyzer are used to analyze the composition of nanometer catalyst.Cyclic voltammogram,chronoamperometry and AC impedance are used to represent the electrocatalytic performance of all catalysts.The results show that the peak current density of PtSnO2/C catalyst（ 131.05 m A·cm^-2） is twice as the peak current density of Pt/C catalyst（ 65.48 m A·cm^-2）.The electrochemical surface area of Pt-SnO2/C catalyst（ 108.4 m^2·g^-1） is much higher than that of Pt/C catalyst（ 99.14 m^2·g^-1）.Pt-SnO2/C catalyst has better resistance to CO poisoning and higher electrocatalytic activities.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2015年第10期2786-2791,共6页
Bulletin of the Chinese Ceramic Society
基金
江苏省高校自然科学研究项目(15KJD430002)
