摘要
以核桃壳为原料通过化学-物理活化法制备出比表面积大(1 500-2 000 m2/g)、堆 积密度大(0．35-0．45 g/cm3)、孔径在2-50nm之间及孔径<2 nm的孔容积均大于 0．45 cm3/g、单元静电容量>30 F／cm3,可作为双电层电容器电极用的高性能活性炭。为双电层 电容器用活性炭的产业化开发探索了一条切实可行之路。利用扫描电子显微镜(SEM)观察了化学催化剂的 添加对炭化得率、炭化料结构的影响以及不同烧失率对活性炭孔隙结构的调控作用,且催化炭化提高炭化得 率10％以上,气体活化前驱体孔隙也有较大的发展。利用Milestone 200比表面积孔径分析仪对气体活化前 后活性炭孔隙结构进行了对比分析,表明气体活化前后,活性炭的微孔、中孔容积均提高0．20-0．30 cm3/g。
High-performance activated carbon with the specifications of high surface area（ 1 500 -2 000 m^2/g） ,high apparent density （0.35 -0.45 cm^3/g） ,high pore volume （both volumes of pores of sizes 2 -50 nm and 〈 2 mm respectively are higher than O. 45 cm^3/g）, unit static capacitance 〉 30 F/cm^3 , suitable for the electrode of doublelayer capacitor, was prepared from walnut hull by chemical-physical method. Under SEM, structure of the sample carbonized by addition of catalyst was observed. It was showed that yield of carbonization was improved 10% and microstructure of original material was developed. The result of pore structure analysis of activated carbons indicated that both micropore and mesopore volumes were enhanced by 0. 20 - 0. 30 cm^3/g.
出处
《林产化学与工业》
EI
CAS
CSCD
2005年第B10期69-72,共4页
Chemistry and Industry of Forest Products
关键词
活性炭
双电层电容器
微结构
activated carbon
double-layer capacitor
microstructure
