申请人前期研究的多孔Pb阳极具有降低阳极电位与阴极锌含Pb量、减少阳极泥与阳极金属用量的优点，有望取代锌电积工业的传统平板阳极。但是，还需要突破多孔Pb阳极机械强度与导电性下降的瓶颈。.本项目提出以金属Al为"反三明治"结构的芯板，研制Al基"反三明治"结构复合多孔Pb阳极，解决多孔Pb阳极强度低和导电性差的问题；提出并研究"熔盐化学镀-金属浴-反重力渗流铸造"工艺，揭示Al表面Pb镀层的生长动力学过程，实现Al与Pb的低阻高强结合，以同时发挥Al基板高强、高电导特性与多孔Pb优异的电化学性能；同时，建立多孔Pb阳极电化学行为研究方法及其相关理论，揭示Al基多孔Pb合金阳极的电化学行为。.项目成果可指导复合多孔Pb合金阳极的在湿法炼锌过程的工业应用，降低阳极原料成本和节约电耗。项目成果还可应用于其它有色金属的湿法提取和电镀工业，实现硫酸体系下有色金属电沉积过程的节能降耗。

The porous Pb anode prepared previously by applicants could decrease the anodic potential and lead contamination of the cathode product, produce less anode slime as well as reduction of anode metal consumption. Therefore, the porous Pb anode could replace traditional flat anode and serve in the zinc electro-winning industry. However, the mechanical strength and electrical conductivity of porous anode will be a problem..This program puts forward "Anti-Sandwich Structure" composite porous anode with Al core, in order to improve the electric conductivity and mechanical performance of lead-based porous anode. This program also develops and studies the "metal salt electroless plating-metal bath-counter-gravity infiltration" process, to revea the growth kinetics of Pb coatings on Al, and realizes the combination of Pb and AL with low resistance and high strength. Therefore, the high strength and high conductivity of Al and the excellent electrochemical properties of porous Pb could be fully used. Simultaneously, the research method and related theories of the electrochemical behavior of porous Pb anode is established, and the electrochemical behavior of Al-based porous Pb alloy anode is revealed..The program achievements could promote the industrial application of porous Pb alloy anode in Zinc hydrometallurgy, reduce the anode material costs and energy consumption. The project achievements could also be applied in the hydrometallurgical process of other nonferrous metals and the electro-plating industry. Therefore, the energy saving in the nonferrous metal electrodeposition process in sulfuric acid system could be achieved.