파쇄 태양전지 활용 실리콘 복합입자의 특성분석 및 리튬이온배터리용 음극재 활용

In this study, we explored the potential to recycle shredded solar cells—generated during the assembly of solar modules—as anode materials for secondary batteries by creating carbon composites. To this end, the shredded bifacial solar cells were ground into a powder (referred to as raw), which was mixed with PVDF particles and heat-treated to produce carbon composite particles (RP). After characterizing the raw and RP particles, we conducted charge-discharge tests on 2032 coin cells assembled using each type of particle as the anode material. The RP particles had an initial discharge capacity of 692.3 mAh/g, representing a 56.4% decrease compared to the raw particles. However, the capacity retention improved significantly, reaching 79.2%, compared to just 1.1% for the raw particles. These results indicate the feasibility of recycling shredded solar cells as anode materials. In our future work, we will attempt to boost this recycling potential through further improvements such as by refining particle size and optimizing the heat treatment process.