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鋅電積工業(yè)用新型泡沫鋁/Pb-0.6 wt%Ag合金復合陽極電化學性能研究
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中國 長沙 中南大學 冶金與環(huán)境學院 岳麓區(qū) 麓山南路932號,中國 長沙 中南大學 冶金與環(huán)境學院 岳麓區(qū) 麓山南路932號,中國 長沙 中南大學 冶金與環(huán)境學院 岳麓區(qū) 麓山南路932號,中國 長沙 中南大學 冶金與環(huán)境學院 岳麓區(qū) 麓山南路932號,中國 長沙 中南大學 冶金與環(huán)境學院 岳麓區(qū) 麓山南路932號,中國 長沙 中南大學 冶金與環(huán)境學院 岳麓區(qū) 麓山南路932號

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TF813

基金項目:

國家自然科學基金（51304254和51274240）；中國博士后科學基金（2015M580698）


A New Type Aluminum foam/Pb-0.6 wt%Ag Alloy Composite Anode with Improved Electrochemical Performance for Zinc Electrowinning Industry
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School of Metallurgy and Environment, Central South University, Lushan South Street 932, Yuelu District, Changsha, 410083, China,School of Metallurgy and Environment, Central South University, Lushan South Street 932, Yuelu District, Changsha, 410083, China,School of Metallurgy and Environment, Central South University, Lushan South Street 932, Yuelu District, Changsha, 410083, China,School of Metallurgy and Environment, Central South University, Lushan South Street 932, Yuelu District, Changsha, 410083, China,School of Metallurgy and Environment, Central South University, Lushan South Street 932, Yuelu District, Changsha, 410083, China,School of Metallurgy and Environment, Central South University, Lushan South Street 932, Yuelu District, Changsha, 410083, China

Fund Project:

National Nature Science Foundation of China（51304254 and 51274240）；China Postdoctoral Science Foundation（2015M580698）

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    摘要:

    為改善傳統(tǒng)鋅電積陽極存在的高析氧過電位和高銀含量的缺陷，本文發(fā)明了一種新型泡沫鋁/Pb-0.6 wt%Ag復合陽極。采用計時電位法，掃描電鏡，交流阻抗和塔菲爾測試方法對比研究了在160 g/L H2SO4極化72 h后泡沫鋁/Pb-0.6 wt%Ag復合陽極和Pb-0.6 wt%Ag陽極的電化學性能。結果表明：泡沫鋁/Pb-0.6 wt%Ag復合陽極的陽極膜比Pb-0.6 wt%Ag陽極的更平整，且抗腐蝕能力更強。此外，泡沫鋁/Pb-0.6 wt%Ag復合陽極的穩(wěn)定陽極電位更小，與其通過計時電位法和交流阻抗獲得的高PbO2，低PbO, PbO?PbSO4含量和低Rct值一致。而且還發(fā)現泡沫鋁/Pb-0.6 wt%Ag復合陽極具有更優(yōu)異的析氧反應行為。

    Abstract:

    In order to overcome defects of high over-potential and preparation cost existing in traditional Pb alloy anode, a new type aluminum foam/Pb-0.6wt%Ag alloy composite anode (AF/Pb-0.6 wt%Ag anode) was produced in this paper. And the electrochemical performance of AF/Pb-0.6 wt%Ag anode and traditional Pb-0.6 wt%Ag anode after 72 h galvanostic polarization were investigated comparatively in 160 g/L H2SO4 solution by chronopotentiometry(CP), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and Tafel measurements. The results show that the anodic layer of AF/Pb-0.6 wt%Ag anode is more intact than that of Pb-0.6wt%Ag anode, and exhibits better corrosion resistance. Moreover, the AF/Pb-0.6 wt%Ag anode shows a lower stable anodic potential, which is consist with the higher PbO2, lower PbO, PbO?PbSO4 content and Rct value obtained by CP and EIS measurements. It is also revealed that the AF/Pb-0.6 wt%Ag anode possesses better oxygen evolution reaction (OER).

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周向陽,馬馳原,楊娟,王帥,王輝,龍波.鋅電積工業(yè)用新型泡沫鋁/Pb-0.6 wt%Ag合金復合陽極電化學性能研究[J].稀有金屬材料與工程,2018,47(10):3008~3014.[Zhou Xiangyang, Ma Chiyuan, Juan Yang, Wang Shuai, Wang Hui, Long Bo. A New Type Aluminum foam/Pb-0.6 wt%Ag Alloy Composite Anode with Improved Electrochemical Performance for Zinc Electrowinning Industry[J]. Rare Metal Materials and Engineering,2018,47(10):3008~3014.]
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  • 收稿日期:2017-03-13
  • 最后修改日期:2018-09-08
  • 錄用日期:2017-06-23
  • 在線發(fā)布日期: 2018-11-08
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