摘要
以稻草秸秆为原料,在N2气氛下,采用预碳化-碱活化的方法制备了活性炭材料,通过X射线衍射(XRD)、扫描电子显微镜(SEM)、N2吸附-脱附等手段进行表征.结果表明,当活化温度为700℃时,制备的活性炭比表面积为2743m^2/g.将其用于超级电容器的电极材料显示了较好的性能,当电流密度为5A/g时,比电容可达到380F/g,循环充放电1000次后,比电容值约为首次比电容的85%,具有较好的循环稳定性.
Activated carbon materials were prepared from carbonized straw via pre-carbonized and NaOH as activator in nitrogen atmosphere. The structure, morphology and composition of the obtained carbon materials were systematically characterized by means of scanning electron microscope (SEM), X-ray diffraction (XRD) and nitrogen adsorption and desorption. The results show that the specific surface area of activated carbon is 2 743 m^2/g at 700℃, and the specific capacitance is 380 F/g at current density of 1 A/g. After 1 000 cycles, the capacity of activated carbon can still be maintained at about 85% compare with the first.
作者
孙泽春
殷竟洲
周国狼
朱凤霞
赵朴素
张芷若
SUN Ze-chun;YIN Jin-zhou;ZHOU Guo-lang;ZHU Feng-xia;ZHAO Pu-su;Zhang Zhi-ruo(School of Chemistry and Chemical Engineering,Huaiyin Normal University,Huaian Jiangsu 223300,China)
出处
《淮阴师范学院学报（自然科学版）》
CAS
2019年第2期138-141,共4页
Journal of Huaiyin Teachers College;Natural Science Edition
基金
国家自然科学基金项目(51872109)
江苏省高校自然科学研究项目(17KJA150002,15KJA150003)
江苏省高校大学生实践创新计划重点项目(201810323009Z)
关键词
稻草秸秆
活性炭
高比表面
超级电容
rice straw
active carbon
high specific surface area
supercapacitor
