CAJ | 학술논문

采用乙炔黑、土状石墨、Cabot Vulcan XC-72炭黑、Cabot Bp2000超级导电炭黑作为硫载体制备了一系列含硫复合材料。通过X射线粉末晶体衍射（XRD）、扫描电子显微镜（SEM）、比表面积分析（BET）等分析测试手段对材料的物理性能进行表征,利用电池测试系统对材料的电化学性能进行了测试。结果表明基体材料表面结构、孔径分布及比表面积等因素都对复合材料的电化学性能造成影响,综合性能最好的基体材料为BP2000超级导电炭黑,其初始放电比容量高达1385.1mAh/g,在室温下经过30次循环之后电池放电比容量仍保持在1080.2mAh/g,容量保持率高达78%。
채용을결흑、토상석묵、Cabot Vulcan XC-72탄흑、Cabot Bp2000초급도전탄흑작위류재체제비료일계렬함류복합재료。통과X사선분말정체연사（XRD）、소묘전자현미경（SEM）、비표면적분석（BET）등분석측시수단대재료적물이성능진행표정,이용전지측시계통대재료적전화학성능진행료측시。결과표명기체재료표면결구、공경분포급비표면적등인소도대복합재료적전화학성능조성영향,종합성능최호적기체재료위BP2000초급도전탄흑,기초시방전비용량고체1385.1mAh/g,재실온하경과30차순배지후전지방전비용량잉보지재1080.2mAh/g,용량보지솔고체78%。
A series of sulfur composite materials which used acetylene black,aphanitic graphite,Cabot Vulcan XC-72 carbon black and Cabot Bp2000 super conductive carbon black were prepared.The physical structures were determined by X-ray diffraction,scanning electron microscopy and specific surface area measurements.The electrochemical performances of the sulfur composite material were characterized by cycling test.The results indicate that factors such as surface morphology,pore size distribution and specific surface area of the matrix materials can affect the electrochemical performance of the composite materials.In this paper,the best matrix material is Bp2000 super conductive carbon.Its initial discharge specific capacity is 1385.1mAh/g.The specific capacity still keep as high as 1080.2mAh/g,after 30 cycles at room temperature just 22% fade.