摘要
以云南小发路煤矿低灰无烟煤为原料,KOH为活化剂制取双电层电容器用高比表面积活性炭电极材料。考察了活化剂与无烟煤的配比对活性炭收率、孔结构及比电容的影响,初步探讨了以无烟煤基高比表面积活性炭作电极的模拟双电层电容器的充放电特性。研究结果表明:随着KOH 无烟煤(质量比:1～5)增加,所得活性炭的收率下降,比表面积、总孔容积和比电容则不断增加。控制适宜的活化工艺条件可制得双电极比电容达73.6F g的无烟煤基高比表面积活性炭,以该活性炭作电极的模拟双电层电容器具有良好的充放电性能。
A high surface area activated carbon, prepared from anthracite from the Yunnan Province of China by activation with KOH, was used as the electrode materials of electric double-layer capacitor (EDLC). The influences of the ratio of activating agent to anthracite in yield, pore structure and specific capacitance of activated carbon as well as its charge-discharge performance as EDLC were studied. The results show that the yield of the activated carbon decrease while its specific surface area and total pore volume increase gradually with increasing ratio of KOH to anthracite. The bi-electrode specific capacitance of the activated carbon can reach 73.6 F/g under suitable technology conditions. The EDLC with the activated carbon as electrodes has a good performance in charge and discharge.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
2002年第4期18-22,共5页
New Carbon Materials
基金
湖南省自然科学基金重点资助项目(01JJY1005)~~
