Eco-friendly Approach of Silicon Recovery from Waste Silicon Photovoltaic Modules and Recycling of Silicon Powder

Ga Min Kim; Hyo-jin Ahn; Hyo Sik Chang

doi:10.7836/kses.2023.43.2.025

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2023 Vol.43, Issue 2 Preview Page Next Page

Research Article

Eco-friendly Approach of Silicon Recovery from Waste Silicon Photovoltaic Modules and Recycling of Silicon Powder 폐 실리콘 태양광 모듈로부터의 실리콘 회수의 친환경적 접근 및 실리콘 분말 재활용

30 April 2023. pp. 25-31

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Abstract

This paper presents an eco-friendly approach for reducing chemical solutions in the chemical process of recovering silicon from a silicon solar cell separated from a waste solar panel. Methanesulfonic acid or laser ablation was used to remove Ag metal electrodes instead of nitric acid. These processes can reduce the use of chemical acid solutions by 50% in our reference process consisting of nitric acid and hydrochloric acid. The purity of the recovered silicon powder measured by inductively coupled plasma atomic emission spectroscopy was more than 99.99% (4N). The feasibility of anode material for secondary batteries was tested by manufacturing recycled silicon powder and SiC powder using the recovered silicon. When the recovered silicon powder and high-purity silicon powder were mixed with the SiC powder, the initial capacity was 1256 mAh/g.

Keywords

Crystalline silicon solar cell

Waste solar cell

Photovoltaic module

Recycling

Purity

키워드

결정질 실리콘 태양전지

폐태양전지

태양광모듈

재활용

순도

References

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Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 43
No :2
Pages :25-31
Received Date : 2023-01-11
Revised Date : 2023-02-21
Accepted Date : 2023-02-23
DOI :https://doi.org/10.7836/kses.2023.43.2.025

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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