2SO4溶液中、45 ℃條件下,采用恒流極化、電化學(xué)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(xué)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(jié)果表明, 3D-Pb-Ca-Sn陽極具有優(yōu)良的三維通孔結(jié)構(gòu),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。;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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