碳纤维基活性复合二氧化铅电极的制备及其电催化性能的研究

叶建强, 陈步明, 黄惠, 何亚鹏, 郭忠诚

doi:10.16577/j.issn.1001-1560.2022.0300

材料保护 >

2022 , Vol. 55 >Issue 11: 1 - 8

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0300

试验研究

碳纤维基活性复合二氧化铅电极的制备及其电催化性能的研究

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¹昆明理工大学冶金与能源工程学院； ²云南省电极材料工程技术中心； ³昆明理工恒达科技股份有限公司

陈步明(1977-)，博士，教授，主要从事湿法冶金和节能电极材料的研究，E - mail:272601291@qq.com

收稿日期: 2022-05-20

修回日期: 2022-06-28

录用日期: 2022-07-27

网络出版日期: 2023-12-25

基金资助

国家自然科学基金项目(51564029,51874154)；云南省科技人才和平台计划项目(2019HB111)资助

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Study on the Preparation and Electrocatalytic Performance of Carbon Fiber - Based Active Composite Lead Dioxide Electrodes

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(1. College of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;2. Research Center of Metallurgical Electrode Materials Engineering Technology, Yunnan Province， Kunming 650106, China;3. Kunming Science & Technology Hengda Technology Co., Ltd., Kunming 650106, China)

Received date: 2022-05-20

Revised date: 2022-06-28

Accepted date: 2022-07-27

Online published: 2023-12-25

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摘要

为获得低成本、高催化活性和长寿命的电积锰用PbO2电极，利用电化学沉积法和烧结法在碳纤维基体上添加底层和中间层制得碳纤维/Ni - CoOx/Sn - SbOx/β - PbO2 - CNT复合电极，采用恒电流极化曲线、Tafel曲线等电化学手段对电极的催化活性及耐蚀性进行了研究。结果表明：制备的碳纤维电极是以Ni - CoOx为底层、Sn - SbOx为中间层、β - PbO2 - CNT为表面活性层。添加Ni - CoOx底层和Sn - SbOx中间层使得PbO2表面活性层与碳纤维的连接更紧密，并在β - PbO2表面活性层添加碳纳米管对电极的耐腐性性能、析氯电位、电催化活性都有明显改善。

关键词： 碳纤维; 底层Ni - CoOx; 中间层Sn - SbOx; 湿法冶金

本文引用格式

叶建强, 陈步明, 黄惠, 何亚鹏, 郭忠诚 . 碳纤维基活性复合二氧化铅电极的制备及其电催化性能的研究[J]. 材料保护, 2022 , 55(11) : 1 -8 . DOI: 10.16577/j.issn.1001-1560.2022.0300

Abstract

In order to obtain PbO2 electrode with low cost, high catalytic activity and long life for manganese electrowinning, a carbon fiber/Ni - CoOx/Sn - SbOx/β - PbO2 - CNT composite electrode was prepared by adding bottom and intermediate layers on the carbon fiber substrate through electrochemical deposition and sintering. Galvanostatic polarization curve, Tafel curve and other electrochemical methods were employed to study the catalytic activity and corrosion resistance of the electrode. Results showed that the as - prepared carbon fiber electrode had a bottom layer of Ni - CoOx, an intermediate layer of Sn - SbOx, and a surface active layer of β - PbO2 - CNT. Adding Ni - CoOx bottom layer and Sn - SbOx intermediate layer made the connection between the PbO2 surface active layer and the carbon fiber closer, and adding carbon nanotubes into the β - PbO2 surface active layer improved the corrosion resistance, chlorine evolution potential and electrocatalysis activity of the electrode.

Key words： carbon fiber; Ni - CoOx bottom layer; Sn - SbOx intermediate layer; hydrometallurgy

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