摘要
通过盐酸多巴胺在含有氯铂酸溶液中聚合,包覆贵金属铂(Pt)单质,搅拌速度控制包覆颗粒的大小,并在氮气保护下高温处理,制得新型催化剂铂碳氮(Pt@CN)。通过扫描电子显微镜(SEM)、X射线光子能谱(XPS)等技术研究了其结构特征,并采用电化学仪器对新型材料在甲醇燃料电池中的应用进行检测。制得的Pt@CN催化剂性能比铂碳(Pt/C)好。Pt@CN、Pt/C的氧化峰位置分别为0.637V和0.665V,Pt@CN的峰位置比Pt/C负移了28mV。Pt@CN、Pt/C的氧化峰位置的电流密度分别为15.5mA和6.09mA,Pt@CN氧化甲醇的电流密度比Pt/C高2.5倍左右。
On the basis of dopamine self-aggregation in chloroplatinic acid solution,poly-dopamine coated platinum nanometer materials were prepared.A new type catalyst Pt@CN was prepared by control of stirring speed and heat treatment under nitrogen protection.The catalyst was characterized by scanning electron microscope（SEM）,X-ray photon spectroscopy（XPS）,and other technologies.The catalytic activity of Pt@CN in methanol fuel cell was evaluated by used cyclic voltammetry.Electrochemical tests showed that the catalyst material Pt@CN had good ability and obviously than Pt/C.Pt@CN compared with the Pt/C：the oxidation peak position were 0.637 Vand 0.665 Vrespectively,the peak position of Pt@CN negative shift 28 mv.Their oxidation peak current density were 15.5mA and 6.09 mA respectively,the Pt@CN electrotrocatalytic cativity in methanol oxidation reaction exhibited 2.5times higher than that of the commercial Pt/C.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第1期139-141,共3页
New Chemical Materials
基金
国家自然科学基金面上项目(21163007
21165009
21465011)
江西省主要科学技术和技术带头人计划(20133BCB22007)
关键词
催化剂
甲醇燃料电池
催化活性
电流密度
catalyst material
methanol fuel cell
catalytic activity
current density
