摘要
以铁氰化钴(Co-PBA)纳米立方体为模板和前体,用水热碱处理得到其衍生物。利用扫描电镜、X射线粉末衍射仪、红外光谱和N 2吸脱附分析仪对衍生物的形貌和微观结构进行表征,并用循环伏安法和电流充放电法评价其电化学性能。结果表明:在100℃条件下使用0.2 M NaOH水热碱处理8 h后,铁氰化钴转变为介孔的氢氧化钴纳米立方体,比表面积为126 m 2/g;当电流密度为1 A/g时,比电容可达到428 F/g。
Taking cobalt hexacyanoferrate(Co-PBA)nanocube as precursor,Co(OH)2 was prepared by the hydrothermal treatment of Co-PBA nanocube with NaOH aqueous solution.The morphology and microstructure was characterized by scanning electron microscopy,micropore and chemisorption analyzer,X-ray diffraction and Fouriertransform infrared(FT-IR)spectra.The supercapacitive performance was investigated by cyclic voltammetry and galvanostatic charge/discharge.Experimental results showed that cobalt hexacyanoferrate was converted into cobalt hydroxide after hydrothermal alkali treatment.And the derived mesoporous Co(OH)2 with a specific surface area of 126 m 2/g possessed a high specific capacitance of 428 F/g at 1 A/g.
作者
李惠颖
唐铭鸿
钱程
唐诗航
魏晓飞
宋朝霞
周泉
许英梅
LI Hui-ying;TANG Ming-hong;QIAN Cheng;TANG Shi-hang;WEI Xiao-fei;SONG Zhao-xia;ZHOU Quan;XU Ying-mei(School of Life Science,Dalian Minzu University,Liaoning Dalian 116600,China)
出处
《广州化工》
CAS
2019年第24期76-78,共3页
GuangZhou Chemical Industry
基金
大学生创新创业训练计划(201812026427,201912026315)
国家自然科学基金(51877029)
关键词
铁氰化钴
衍生物
氢氧化钴
赝电容
cobalt hexacyanoferrate
derivative
cobalt hydroxide
pseudocapacitance
