材料导报
材料導報
재료도보
MATERIALS REVIEW
2009年
z1期
316-319
,共4页
邴雪飞%吕永根%吴杰%杨常玲
邴雪飛%呂永根%吳傑%楊常玲
병설비%려영근%오걸%양상령
超级电容器%活性碳%孔结构
超級電容器%活性碳%孔結構
초급전용기%활성탄%공결구
supercapacitor%activated carbon%pore structure
分别以酚醛树脂和煤沥青泡沫碳为原料,经水蒸气活化、研磨制得比表面积和粒径相近的活性碳粉.采用扫描电镜、BET吸附仪和恒流充放电测试仪对2种活性碳的结构进行了表征并研究了其充放电性能.结果表明,微孔的孔径分布对充放电性能有很大影响,提高比表面积的同时增大微孔的孔径,有利于提高活性碳电极的充放电容量和功率.
分彆以酚醛樹脂和煤瀝青泡沫碳為原料,經水蒸氣活化、研磨製得比錶麵積和粒徑相近的活性碳粉.採用掃描電鏡、BET吸附儀和恆流充放電測試儀對2種活性碳的結構進行瞭錶徵併研究瞭其充放電性能.結果錶明,微孔的孔徑分佈對充放電性能有很大影響,提高比錶麵積的同時增大微孔的孔徑,有利于提高活性碳電極的充放電容量和功率.
분별이분철수지화매력청포말탄위원료,경수증기활화、연마제득비표면적화립경상근적활성탄분.채용소묘전경、BET흡부의화항류충방전측시의대2충활성탄적결구진행료표정병연구료기충방전성능.결과표명,미공적공경분포대충방전성능유흔대영향,제고비표면적적동시증대미공적공경,유리우제고활성탄전겁적충방전용량화공솔.
Two kinds of activated carbon powder are obtained through foaming,carbonization,vapour activation and grinding from phenol resin and coal tar.Their morphology and pore structure are characterized with scanning microscope and BET nitrogen adsorption instrument,while the charge-discharge performances are investigated by constant current battery tester.The results show that the micropores smaller than 2nm play a more important role in the performances.Increasing the specific surface area and the diameter of micropores benefit the charge-discharge behavior at larger current.
