###
DOI:
有色金属工程:2020,(2):1-7
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
电沉积制备三元Pt-Sn-Co合金纤维及氧还原电催化性能表征
刘帅1, 王乐萍1, 田林2, 杨妮2, 谢刚2, 李冰1
(1.华东理工大学;2.云南冶金集团共伴生有色金属资源加压湿法冶金技术国家重点实验室)
Preparation of ternary Pt-Sn-Co alloy fibers by electrodeposition and characterization of oxygen reduction electrocatalytic performance
Liu Shuai1, Wang Leping1, Tian Lin2, Yang Ni2, Xie Gang2, Li Bing1
(1.School of Materials science and Engineering,East China University of Science andTechnology;2.State Key laboratory of Common associated non-ferrous metal resources pressure hydrometallurgy technology)
摘要
图/表
参考文献
相似文献
本文已被:浏览 70次   下载 52
投稿时间:2019-04-10    修订日期:2019-04-20
中文摘要: 采用CoCl2-SnCl2-1-乙基-3-甲基氯化咪唑(EMIC)离子液体,碳纸为基体,在-0.5V恒电位下无模板电沉积得到了SnCo0.73合金纤维。在K2PtCl4溶液和抗坏血酸中进行化学还原反应后,制备了PtSn23.2Co17.4纤维。电化学实验表明:经过500次循环后,PtSn23.2Co17.4纤维的电化学活性面积(ECSA)相对于商用催化剂(JM-Pt/C)下降得更慢。在0.85 V时,PtSn23.2Co17.4纤维的质量比活性和面积比活性分别为23.35 mA/mg和0.048 mA/cm2,分别是JM-Pt/C催化剂1.3倍和1.5倍。在0.9 V时,PtSn23.2Co17.4纤维的质量比活性和面积比活性分别为12.67 mA/mg和0.026 mA/cm2,分别是JM-Pt/C催化剂的2.6倍和3.3倍。经过500次循环后,在0.85和0.9 V,PtSn23.2Co17.4纤维的质量比活性和面积比活性均明显高于JM-Pt/C催化剂。此外,负载PtSn23.2Co17.4纤维的碳纸可以作为电极直接组装进燃料电池,简化了燃料电池的制备过程。
Abstract:Using CoCl2-SnCl2-1-ethyl-3-methylimidazole chloride (EMIC) ionic liquid with carbon paper as the matrix, SnCo0.73 alloy fibers were obtained by template-free electrodeposition at -0.5V constant potential. PtSn23.2Co17.4 were prepared after chemical reduction in K2PtCl4 solution and ascorbic acid. Electrochemical tests show that the electrochemical activity area (ECSA) of PtSn23.2Co17.4 fibers decreases more slowly than the commercial catalyst (JM-Pt/C) after 500 cycles. At 0.85V, the mass specific activity and area specific activity of PtSn23.2Co17.4 fibers are 23.35 mA?mg-1 and 0.048 mA?cm-2, respectively, which are 1.3 times and 1.5 times of the JM-Pt/C catalyst, respectively. At 0.9 V, the mass specific activity and area specific activity of PtSn23.2Co17.4 fibers are 12.67 mA?mg-1 and 0.026 mA?cm-2, respectively, which are 2.6 times and 3.3 times as much as those of the JM-Pt/C catalyst, respectively. After 500 cycles, the mass activity and area specific activity of PtSn23.2Co17.4 fibers are significantly higher than those of the JM-Pt/C catalyst at 0.85 and 0.9 V. In addition, carbon paper loaded with PtSn23.2Co17.4 fibers can be directly assembled into the fuel cell as an electrode, which simplifies the preparation process of the fuel cell.
文章编号:     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(51774145); 云南冶金集团共伴生有色金属资源加压湿法冶金技术国家重点实验室开放基金资助项目(yy2016008)
引用文本:
刘帅,王乐萍,田林,杨妮,谢刚,李冰.电沉积制备三元Pt-Sn-Co合金纤维及氧还原电催化性能表征[J].有色金属工程,2020,(2):1-7.

我们一直在努力打
造,精品期刊,传
播学术成果

全国咨询服务热线
86-10-63299224

杂志信息

期刊简介

相关下载

联系我们

电话:86-10-63299224/63299153

传真:010-63299754

QQ:XXXXXXX

Email:ysjsgc@bgrimm.com

邮编:100160

地址:北京市南四环西路188号总部基地十八区23号楼

关注微信公众号