| Issue |
Korean Chemical Engineering Research,
Vol.56, No.1, 42-48, 2018
Vol.56, No.1, 42-48, 2018
실리콘-탄소나노튜브-탄소 복합체 제조 및 리튬이온전지 응용
Synthesis of Si-CNT-C Composites and Their Application to Lithium Ion Battery
리튬이온전지의 음극재로 높은 이론적인 용량과 낮은 방전 전위 및 무독성을 가진 실리콘이 높은 관심을 받고 있다. 본 연구에서는 리튬이온전지의 고효율 음극재로 활용을 위한 실리콘-탄소나노튜브-탄소(Si-CNT-C) 복합체를 제조하였다. 복합체 제조를 위해서는 에어로졸 자기조립과 후 열처리 공정을 사용하였다. 제조된 Si-CNT-C 복합체는 구형이었으며 평균 입자크기는 2.72 μm이었다. 복합체의 크기는 실리콘 및 탄소나노튜브의 농도가 증가할수록 커지는 것을 확인하였다. Si-CNT-C 복합체는 탄소나노튜브와 글루코스에서 탄화된 탄소가 실리콘 입자들을 중심으로 표면에 부착된 형태이었다. 제조된 Si-CNT-C 복합체는 전기화학 분석을 통해 순수한 실리콘보다 우수한 사이클 성능을 보여주고 있음을 확인하였다.
Silicon has attracted extensive attention due to its high theoretical capacity, low discharge potential and
non-toxicity as anode material for lithium ion batteries. In this study, Si-CNT-C composites were fabricated for use as a
high-efficiency anode material in a lithium ion battery. Aerosol self-assembly and post-heat treatment processes were
employed to fabricate the composites. The morphology of the Si-CNT-C composites was spherical and an average particle
size was 2.72 μm. The size of the composite increased as concentration of Si and CNT increased in the precursor
solution. In the Si-CNT-C composites, CNT and C carbonized from glucose were attached to the surface of Si particles.
Electrochemical measurement showed that the cycle performance of Si-CNT-C composites was better than that of silicon
particles.
Keywords:
Si-CNT-C composite; Aerosol self-assembly; Post-heat treatment; Anode material; Lithium ion battery
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[Cited By]
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.