CAJ | 학술논문

以咖啡渣为原料,利用碳化与活化反应制备出多孔的碳材料,并利用 X 射线衍射、扫描电子显微镜、Raman 光谱和 N2吸附脱附等方法分析该材料的物理化学性质.结果表明：该材料具有较高的石墨化程度；当质量电流密度为0.1 A/g 时,其首圈放电和充电质量比容量值分别为1029 mA·h/g 和461 mA·h/g,且循环稳定性较好,其质量比容量远高于石墨的理论容量(372 mA·h/g).
이가배사위원료,이용탄화여활화반응제비출다공적탄재료,병이용 X 사선연사、소묘전자현미경、Raman 광보화 N2흡부탈부등방법분석해재료적물이화학성질.결과표명：해재료구유교고적석묵화정도；당질량전류밀도위0.1 A/g 시,기수권방전화충전질량비용량치분별위1029 mA·h/g 화461 mA·h/g,차순배은정성교호,기질량비용량원고우석묵적이론용량(372 mA·h/g).
An easy carbonization and activation approach was employed to synthesize porous carbon material with coffee grounds as carbon source.X-ray diffraction (XRD),Raman spectroscopy,and scanning electron microscopy (SEM)show that the prepared material possesses a disordered structure with a relatively high graphitization degree.The existence of mesopores was confirmed by the nitrogen adsorption/desorption isotherms as well as the pore size distribution curve.At a mass current density of 0.1 A/g,the initial discharge and charge capacities of the prepared material can reach as high as 1 029 and 461 mA·h/g,respectively,much higher than the theoretical capacity of graphite (372 mA·h/g).