2SO4溶液中、45 ℃條件下，采用恒流極化、電化學阻抗譜、陽極極化和雙斜率Tafel曲線等方法研究了3D-Pb-Ca-Sn和傳統(tǒng)Pb-Ca-Sn陽極的電化學性能。此外，還對2種陽極氧化層的微觀形貌、元素分布和物相組成進行了研究。結果表明， 3D-Pb-Ca-Sn陽極具有優(yōu)良的三維通孔結構，增加了陽極的析氧表面積；因此，與傳統(tǒng)的Pb-Ca-Sn陽極相比，3D-Pb-Ca-Sn陽極具有更低的陽極電位、更高的交換電流密度和更好的電催化活性，且其氧化層中β-PbO2含量更高，而PbSO4含量更低。"/>

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銅電積用3D-Pb-Ca-Sn陽極的電化學性能和微觀形貌
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1.河北工程大學 材料科學與工程學院，河北 邯鄲 056000;2.河北工程大學 教育技術中心，河北 邯鄲 056000;3.中南大學 冶金與環(huán)境學院，湖南 長沙 410083

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基金項目:

NSFC(51904085 and 51904086)；Natural Science Foundation of Hebei Province（E2021402056）


Electrochemical Properties and Microtopography of 3D Through-Hole Pb-Ca-Sn Anode for Copper Electrowinning
Author:
Affiliation:

1.School of Materials Science and Engineering, Hebei University of Engineering, Handan 056000, China;2.Educational Technology Center, Hebei University of Engineering, Handan 056000, China;3.School of Metallurgy and Environment, Central South University, Changsha 410083, China

Fund Project:

National Natural Science Foundation of China (51904085, 51904086); Natural Science Foundation of Hebei Province (E2021402056)

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    摘要:

    制備的3D-Pb-Ca-Sn陽極有望成為性能優(yōu)良的銅電積陽極材料。在160 g/L H2SO4溶液中、45 ℃條件下，采用恒流極化、電化學阻抗譜、陽極極化和雙斜率Tafel曲線等方法研究了3D-Pb-Ca-Sn和傳統(tǒng)Pb-Ca-Sn陽極的電化學性能。此外，還對2種陽極氧化層的微觀形貌、元素分布和物相組成進行了研究。結果表明， 3D-Pb-Ca-Sn陽極具有優(yōu)良的三維通孔結構，增加了陽極的析氧表面積；因此，與傳統(tǒng)的Pb-Ca-Sn陽極相比，3D-Pb-Ca-Sn陽極具有更低的陽極電位、更高的交換電流密度和更好的電催化活性，且其氧化層中β-PbO2含量更高，而PbSO4含量更低。

    Abstract:

    3D through-hole Pb-Ca-Sn anode was prepared which may be a promising anode with excellent performance for copper electrowinning. And the electrochemical properties of 3D through-hole Pb-Ca-Sn anode and Pb-Ca-Sn anode were studied by galvanostatic polarization, electrochemical impedance spectroscopy, anodic polarization and double-Slope Tafel carried out in 160 g/L H2SO4 solution at 45 °C. Besides, the micro-morphology, element distribution and phase composition of the oxide layer were investigated. Results show that compared with the traditional Pb-Ca-Sn, 3D through-hole Pb-Ca-Sn anode shows much lower anodic potential, higher exchange current density and better electrocatalytic activity. These characteristics are related to its excellent 3D through-hole structure, which increases the oxygen evolution surface area of the anode. Furthermore, the content of β-PbO2 and PbSO4 in the oxide layer of 3D through-hole Pb-Ca-Sn is higher and lower than those of Pb-Ca-Sn, respectively.

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王帥,劉穎,徐東,周向陽.銅電積用3D-Pb-Ca-Sn陽極的電化學性能和微觀形貌[J].稀有金屬材料與工程,2022,51(6):1986~1992.[Wang Shuai, Liu Ying, Xu Dong, Zhou Xiangyang. Electrochemical Properties and Microtopography of 3D Through-Hole Pb-Ca-Sn Anode for Copper Electrowinning[J]. Rare Metal Materials and Engineering,2022,51(6):1986~1992.]
DOI：10.12442/j. issn.1002-185X.20210383

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  • 收稿日期:2021-04-29
  • 最后修改日期:2021-06-24
  • 錄用日期:2021-06-25
  • 在線發(fā)布日期: 2022-06-29
  • 出版日期: 2022-06-29