离子束溅射制备Pt及Pt合金催化电极材料的电化学活性研究  

Study on the Electrochemical Activities of Pt and Pt Based Alloys Catalytic Electrode Materials Produced by Ion Beam Sputtering

作　　者：昝林寒[1] 杨滨[1] 李旸[1] 

机构地区：[1]昆明贵金属研究所,云南昆明650221

出　　处：《贵金属》2005年第1期26-29,共4页Precious Metals

基　　金：国家自然科学基金资助项目(No.50001003)

摘　　要：Pt(Pt合金)/C催化电极是燃料电池及电解法制氢的关键部件,提高Pt(Pt合金)/C电极的催化活性一直是研究的热点。本文采用离子束溅射技术(IBS),以石墨纤维布为基底,制备了Pt/C、PtRu/C、PtTi/C和PtNi/C催化电极材料。在2电极电解槽中测试了电极的电化学活性。结果表明,PtRu/C电极比纯铂及其它合金电极具有更好的催化活性。用于间接电解H2S制备H2中试,反应温度从20℃提高到30℃时,电流密度增加约80%;连续运转521h,电流下降仅2.8%。The Pt(Pt alloy)/C catalytic electrode is a key component in fuel cells and H2 production by electrolytic method. Improving in catalytic activity of Pt(Pt alloy)/C electrode has been a hot point for research. In the present paper, the Pt/C, PtRu/C, PtTi/C and PtNi/C electrode materials were prepared by ion beam sputtering(IBS) Pt and its alloys on graphite fibrous cloth. The electrochemical activity of the electrodes were tested in a bi-pole electrolytic cell. The result showed that the catalytic activity of PtRu/C was better than those of Pt/C, PtTi/C and PtNi/C. For pilot production of H2 from H2S by indirect electrolysis, raising the temperature from 20℃ to 30℃, the current density was increased by 80%; after continuous operation for 521 h, the current decrease was only 2.8%.

关 键 词：催化电极 制备 合金 催化活性 制氢 反应温度 电解槽 离子束溅射 电化学活性 连续 

分 类 号：TG174[金属学及工艺—金属表面处理] TQ124.43[金属学及工艺—金属学]