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Recent progress and future prospects of silicon solar module recycling
Current Opinion in Green and Sustainable Chemistry ( IF 9.3 ) Pub Date : 2023-08-23 , DOI: 10.1016/j.cogsc.2023.100863
Meng Tao , Theresa Chen , Natalie Click , Randall Adcock

Silicon solar modules are only 10–15 wt% circular with today's recycling technologies. A 90 wt% circularity requires that all the inorganic materials in silicon modules be recovered for reuse in solar or similar applications. Major technical barriers to a 90 wt% circularity for silicon modules include: 1) removal of the fluoropolymer back sheet; 2) detachment of silicon cells from glass; 3) removal of the encapsulant on silicon cells; and 4) mild chemistry and minimization of chemical waste along with high material recovery rates. Noticeable progress in recycling technologies in the last few years includes: 1) mechanical milling to remove the fluoropolymer back sheet; 2) laser debonding of the encapsulant from silicon cells; 3) dissolution of the encapsulant with a base; 4) mild chemistry for silver and lead recovery; and 5) regenerative chemistry to reuse some of the chemicals in silicon cell recycling.



中文翻译:

硅太阳能电池组件回收的最新进展及未来展望

采用当今的回收技术,硅太阳能组件的循环利用率仅为 10–15%。90 wt% 的循环度要求回收硅模块中的所有无机材料,以便在太阳能或类似应用中重复使用。硅组件实现 90 wt% 圆形度的主要技术障碍包括:1)去除含氟聚合物背板;2)硅电池与玻璃的分离;3)去除硅电池上的封装材料;4) 温和的化学反应,最大限度地减少化学废物以及高材料回收率。过去几年回收技术的显着进展包括:1)机械研磨去除含氟聚合物背板;2) 硅电池封装材料的激光脱粘;3)用碱溶解封装剂;4)用于银和铅回收的温和化学;5)再生化学,以重复利用硅电池回收中的一些化学品。

更新日期:2023-08-23
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