[논문]고상법을 활용한 리튬이차전지 폐양극활물질 재활용 기술 연구

강동훈; 임주원; 고민성

doi:10.5695/jsse.2023.56.4.259

고상법을 활용한 리튬이차전지 폐양극활물질 재활용 기술 연구
Research on recycling technology for spent cathode materials of lithium-ion batteries using solid-state synthesis 원문보기

한국표면공학회지 = Journal of the Korean institute of surface engineering, v.56 no.4, 2023년, pp.259 - 264

강동훈 (부경대학교 금속공학전공) , 임주원 (부경대학교 금속공학전공) , 고민성 (부경대학교 금속공학전공)

Abstract ▼ AI-Helper

As the demand for lithium-ion batteries, a key power source in electric vehicles and energy storage systems, continues to increase for achieving global carbon neutrality, there is a growing concern about the environmental impact of disposing of spent batteries. Extensive research is underway to develop efficient recycling methods. While hydrometallurgy and pyrometallurgy methods are commonly used to recover valuable metals from spent cathode materials, they have drawbacks including hazardous waste and complex processes. Hence, alternative recycling methods that are environmentally friendly are being explored. However, recycling spent cathode materials still remains complex and energy-intensive. This study focuses on a novel approach called solid-state synthesis, which aims at regenerating the performance of spent cathode materials. The method offers a simpler process and reduces energy consumption. Optimal heat treatment conditions were identified based on experimental results, contributing to the development of sustainable recycling technologies for lithium-ion batteries.

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표/그림 (7)

그림 Fig. 1. TGA graphs of cathode scrap.
그림 Fig. 2. SEM images and EDS elemental maps of representative particles: (a) 400, (b) 500, (c) 600.
그림 Fig. 3. XRD patterns of SLCO and regenerated cathode materials.
그림 Fig. 4. SEM image of (a) SPLCO (b) DR850 (b) DR950 (b) DR1050.
표 Table 1. I(003)/(104) ratio of SPLCO and regenerated cathode materials.
표 Table 2. Elements contents in the SPLCO and regenerated cathode materials. (wt%)
그림 Fig. 5. (a) Voltage profile of SPLCO and regenerated cathodes at 3-4.3 V. (b) Specific discharge capacity with cycling of regenerated cathodes.

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