silver
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Involved in
- Stainless steel could offer a practical way to recover much of silver instead of letting it go to waste.
- Silver accounts for half of the material value of a PV module.
- 316L stainless steel came close to matching silver itself.
- Stainless steel delivered comparable performance to silver, achieving an average recovery rate of 93% and a Faradaic efficiency of 92%, while offering greater stability and avoiding contamination of the deposited silver.
- That small fraction of silver carries enormous value.
- Old solar panels contain only a tiny amount of silver by weight.
- Recovered silver showed no evidence of copper co‑deposition at the concentrations tested.
- Silver represents only around 0.03% of the weight of a complete PV module.
- The team compared silver, 316L stainless steel, copper, and graphite as cathodes while focusing on electrode material, current density, and copper contamination.
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Origin: first recognised while reading Researchers in Australia found stainless steel can recover 93% of the silver from old solar panels · 2026-09-06 19:48