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Received April 26, 2023
Revised May 12, 2023
Accepted June 13, 2023
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PVC를 원료로 탄소코팅한 Mo6S8의 합성 및 전기화학적 특성

Synthesis and Electrochemical Properties of Carbon Coated Mo6S8 using PVC

1충북대학교 화학공학과 28644 충북 청주시 서원구 충대로 1 2한국과학기술연구원 에너지저장연구센터 02792 서울특별시 성북구 화랑로 14길 5
1Department of Chemical Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk, 28644, Kore 2Energy Storage Research Center, Korea Institute of Science and Technology, 14Gil 5 Hwarang-ro, Seongbuk-gu, Seoul, 02792, Korea
Korean Chemical Engineering Research, August 2023, 61(3), 348-355(8), 10.9713/kcer.2023.61.3.348 Epub 31 August 2023
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마그네슘 이차전지는 기존에 사용되고 있는 리튬이온전지를 대체할 수 있는 가능성으로 인해 많은 주목을 받고 있 다. 마그네슘 이차전지용 양극활물질인 Mo6S8 을 MSS (Molten Salt Synthesis)법으로 합성하였고, Mo6S8 의 전기화학 적 특성을 향상시키기 위하여 탄소소재인 PVC (Poly Vinyl Chloride)를 첨가하여 탄화시켰다. 물질의 결정 구조와 크 기, 표면 상태는 XRD (X-ray Diffraction), SEM (Scanning Electron Microscope)으로 분석하였다. 전기화학적 특성은 배터리충방전기를 이용하여 충·방전 프로파일과 출력 특성 등을 측정하였다. PVC를 2.81 wt% 첨가한 물질의 경우, 0.125 C-rate에서 85.8 mAh/g, 0.5 C-rate에서 69.2 mAh/g, 1 C-rate에서 60.5 mAh/g의 용량을 나타내어 우수한 출력 특성을 보여주었다.

Magnesium secondary batteries are attracting much attention due to their potential to replace conventionally used lithium ion batteries. Magnesium secondary battery cathode material Mo6S8 were synthesized by molten salt synthesis method and PVC as a carbon materials were added to improve electrochemical properties. Crystal structure, size and surface of the synthesized anode materials were measured through XRD and SEM. Charge-discharge profiles and rate capabilities were measured by battery test system. 2.81 wt% PVC coated sample showed the best rate capabilities of 85.8 mAh/g at 0.125 C-rate, 69.2 mAh/g at 0.5 C-rate, and 60.5 mAh/g at 1 C-rate.


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