Electrochemical Performance of Carbon/Silicon Composite as Anode Materials for High Capacity Lithium Ion Secondary Battery
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 8권 / 4호
ㆍ저자명 : Taek-Rae Kim, Jing-Yu Wu, Quan-Li Hu, Myung-Soo Kim
ㆍ저자명 : Taek-Rae Kim, Jing-Yu Wu, Quan-Li Hu, Myung-Soo Kim
목차
1. 서 론2. 실험 방법
3. 결과 및 고찰
4. 결 론
References
한국어 초록
Carbon/silicon composites were synthesized by mixing silicon powders with petroleum pitch and subsequent heattreatment. The resultant composites were composed of carbon and nano-size crystalline silicon identified by XRD and EDX. FIB images and SEM images were taken respectively to detect the existence of silicon impregnated in carbon and the distribution of silicon on the carbon surface. The obtained carbon/silicon materials were assembled as half cell anodes for lithium ion secondary battery and their electrochemical properties were tested. The pitch/silicon composite(3 : 1 wt. ratio) heat treated at 1000oC and mixed with 55.5 wt.% of graphite showed relatively good electrochemical properties such as the initial efficiency of 78%, the initial discharge capacity of 605 mAh/g, and the discharge capacity of 500 mAh/g after 20 cycles.Keywords : carbon, silicon, pitch, lithium ion secondary battery, anode materials
영어 초록
Carbon/silicon composites were synthesized by mixing silicon powders with petroleum pitch and subsequent heattreatment. The resultant composites were composed of carbon and nano-size crystalline silicon identified by XRD and EDX. FIB images and SEM images were taken respectively to detect the existence of silicon impregnated in carbon and the distribution of silicon on the carbon surface. The obtained carbon/silicon materials were assembled as half cell anodes for lithium ion secondary battery and their electrochemical properties were tested. The pitch/silicon composite(3 : 1 wt. ratio) heat treated at 1000oC and mixed with 55.5 wt.% of graphite showed relatively good electrochemical properties such as the initial efficiency of 78%, the initial discharge capacity of 605 mAh/g, and the discharge capacity of 500 mAh/g after 20 cycles.Keywords : carbon, silicon, pitch, lithium ion secondary battery, anode materials참고 자료
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