[1]刘密,韩莉锋,肖元化,等.多孔Co3O4纳米片的制备及其电化学性能研究[J].郑州大学学报(工学版),2013,34(03):46-49.[doi:10.3969/j.issn.1671-6833.2013.03.012]
　LIU Mi,HAN Li-feng,XIAO Yuan-hua,et al.Fabrication and Electrochemical Properties of Porous Co3O4 Nanoplates[J].Journal of Zhengzhou University (Engineering Science),2013,34(03):46-49.[doi:10.3969/j.issn.1671-6833.2013.03.012]
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多孔Co3O4纳米片的制备及其电化学性能研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34卷
期数:
2013年03期
页码:
46-49
栏目:
出版日期:
2013-05-31

文章信息/Info

Title:
Fabrication and Electrochemical Properties of Porous Co3O4 Nanoplates
作者:
刘密; 韩莉锋; 肖元化; 等.
郑州轻工业学院材料与化学工程学院,河南郑州,450002, 郑州轻工业学院材料与化学工程学院,河南郑州450002;新疆大学应用化学研究所,新疆乌鲁木齐830046
Author(s):
LIU Mi1; HAN Li-feng1; XIAO Yuan-hua1; 2; ZHANG Ai-qin1; 2; LIU Shao-jun1; CAO Yong-bo1; LI Feng1; 2
1.College of Materials and Chemical Engineering ,Zhengzhou University of Light Industry , Zhengzhou 450002，China;，2.Insti-tute of Applied Chemistry，Xinjiang University，Urumqi 830046，China
关键词:
电化学电容器;  Co3O4;  多孔;  纳米片
Keywords:
electrochemical capacitor;  cobalt oxide;  porous;  nanoplate
分类号:
O614.81+2
DOI:
10.3969/j.issn.1671-6833.2013.03.012
文献标志码:
A
摘要:
采用溶剂热法制备片状Co(CO3)0.5(OH)·0.11H2O前驱物,经400℃煅烧2h即可得到多孔Co3O4纳米片.通过场发射扫描电镜(FESEM)和透射电镜(HRTEM)观测了纳米片的形貌,利用X射线衍射(XRD)分析了纳米片的结构,通过循环伏安、恒流充放电和交流阻抗测试了材料的电化学电容性能.结果表明:多孔Co3O4纳米片厚度约为50 nm,孔径主要分布在10 nm左右；0.5 A/g恒流充放电情况下,比容量高达707 F/g,当电流密度高达8 A/g时比容量依然高达547 F/g；同时,该材料循环1 000次后,容量保持率为97.4％.
Abstract:
Abstract: Porous Co3O4 nanoplates prepared with a one-pot hydrothermal synthesis method were synthesizedby calcining the precipitates Co( CO3)0.5,( OH)·0.11H2O at 400 C for 2h.That crystal structures and mor-phologies both of the precursors and products have been characterized with X-ray diffraction ( XRD),field e-mission scanning electron microscopic ( FESEM),high-resolution transmission electron microscopic ( HR-TEM). Electrochemical properties of the Co3O4 nanoplates were carried out using cyclic voltammetry,gal-vanostatic charge-discharge measurements and electrochemical impedance spectroscopy. The results showedthat the porous Co3O4 nanoplates had the thickress of about 50 nm,pore sizes about 10 nm and exhibited highspecific capacitances of 707 F/g at 0.5 A/g and 547 F/g at 8 A/g. Furthermore,the specific capacitance ofthe materials was 97.4% after cycling for 1000 times.
更新日期/Last Update: 1900-01-01