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2021 Vol.41, Issue 6 Preview Page

Research Article

Environmentally Friendly Recovery of Silver from c-Si Solar Cell

태양전지로부터 은 회수를 위한 친환경 공정 연구

Sung-Soo Ahn12
,
Jun-Kyu Lee3
,
Young-Soo Ahn4
,
Gi-Hawn Kang5
,
Hyo-Sik Chang6*
,
Jin-Seok Lee4*
안 성수12
,
이 준규3
,
안 영수4
,
강 기환5
,
장 효식6*
,
이 진석4*
1Student Researcher, Energy Conversion and Storage Materials Laboratory, Korea Institute of Energy Research
2Master Course Student, Graduate School of Energy Science and Technology, Chungnam National University
3Postdoctoral Researcher, Energy Conversion and Storage Materials Laboratory, Korea Institute of Energy Research
4Principal Researcher, Energy Conversion and Storage Materials Laboratory, Korea Institute of Energy Research
5Principal Researcher, Photovoltaic Laboratory, Korea Institute of Energy Research
6Professor, Graduate School of Energy Science and Technology, Chungnam National University
1한국에너지기술연구원 변환저장소재연구실, 학생연구원
2충남대학교 에너지과학기술대학원, 석사과정
3한국에너지기술연구원 변환저장소재연구실, 박사후연구원
4한국에너지기술연구원 변환저장소재연구실, 책임연구원
5한국에너지기술연구원 태양광연구단, 책임연구원
6충남대학교 에너지과학기술대학원, 교수
*Corresponding Author
*Corresponding Author
30 December 2021. pp. 19-29
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Abstract

In this study, a solution capable of leaching silver (Ag) from solar cells in an environment- friendly manner was presented, and a leaching effect according to the concentration was evaluated. Generally, a nitric acid (HNO3) solution is used to leach Ag. However, it often causes environmental pollution owing to its high toxicity and the nitrous oxide (NOx gas) generated during the process, thus requiring considerable development. Accordingly, Ag leaching behavior according to the concentration was confirmed by mixing sulfuric acid (H2SO4) and hydrogen peroxide (H2O2) solutions. After this process, the optimal concentration condition was derived by confirming the Ag leaching effect through inductively coupled plasma-atomic emission spectroscopy (ICP-AES) analyses of the leachate. Additionally, Ag removal in the recovered scrap to which the optimal concentration condition was applied was confirmed using scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDS). Conclusively, as the H2SO4 and H2O2 mixed solution concentration increased, the Ag leaching effect tended to increase, and the optimal condition derived from the analysis reached a level capable of replacing the HNO3 solution.

Keywords
Solar cell
Silver
Eco-friendly
Leaching
Recovery
키워드
태양전지
은
친환경
침출
회수
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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 : 41
  • No :6
  • Pages :19-29
  • Received Date : 2021-10-12
  • Revised Date : 2021-11-01
  • Accepted Date : 2021-11-02
  • DOI :https://doi.org/10.7836/kses.2021.41.6.019
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