Lead recovery method and device for perovskite battery
A perovskite battery and lead recovery technology, applied in the field of photovoltaics, to achieve the effect of simple structure, avoiding lead pollution, and improving effective utilization
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Embodiment 1
[0071] Break the perovskite cell into about 1cm 3 of pieces.
[0072] 3000 g of the above fragments were soaked in 2 L soaking solution (DMSO) at 80° C. for 6 h. Then filter to obtain lead-containing separation liquid.
[0073] Add 0.10 g of sodium sulfide to 2 L of lead-containing separation liquid, precipitate for 0.5 h, let stand, and filter to obtain 0.30 g of PbS solid.
[0074] The lead recovery was calculated to be 97%.
Embodiment 2
[0076] It is basically the same as Example 1, except that 2L of lead-containing separation solution is poured into the electrolysis mechanism, and then the conductive electrolyte choline chloride is added thereto. The lead foil was used as the working electrode, the carbon electrode was used as the counter electrode, and the working electrode was connected to a voltage of -0.9V.
[0077] Metallic lead is recovered at the cathode. The recovery rate of lead is 97%. The concentration of Pb in the electrolyte drops below 1% of the original concentration.
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