中文摘要：

为了提高有机镁空气电池的放电性能,将1mol/LEtMgBr/THF溶液作为电解液,分别采用恒电流沉积和脉冲沉积的方法在泡沫铜基体上电沉积镁制备一种具有三维结构的多孔镁电极。利用直角弯曲阴极法优化脉冲电沉积的参数。通过扫描电子显微镜观察多孔镁电极的表面形貌,采用计时电流法考察多孔镁电极的放电性能。此外,还通过循环伏安、扫描电子显微镜和电感耦合等离子体发射光谱仪等方法考察泡沫铜集流体的三维结构稳定性。结果表明,多孔镁电极的倍率放电性能明显优于平板镁电极的;采用脉冲电沉积方法制备的多孔镁电极的倍率放电性能优于采用直流电沉积方法制备的多孔镁电极。在放电过程中,泡沫铜集流体的三维结构稳定性保持良好。

英文摘要：

A novel type of porous magnesium electrode with a stable 3D copper foam as current collectors for the organic magnesium-air battery was prepared by both amperostatic and pulsed electrodeposition of magnesium on copper foam substrates in an electrolyte of 1 mol/L EtMgBr/THF solution, respectively. Optimal parameters of the pulsed electrodeposition were obtained using a bending cathode at the right angle. The surface morphology of the porous electrode was investigated by SEM, and the discharging performance of the porous magnesium electrode was detected by the chronoamperometric measurement. The electrochemical stability of 3D copper foam current collectors was examined by cyclic voltammetry, SEM and ICP-OES analyses. The results show that the rate capability of the porous magnesium electrode with a stable 3D copper foam as a current collector is better than that of the planar magnesium electrode, and the rate capability of the porous magnesium electrode prepared by the pulsed electrodeposition is superior to that of the porous magnesium electrode prepared by the amperostatic electrodeposition. The 3D structure of copper foam current collectors of the porous magnesium electrode could keep stable during the discharging process.