[1]代 芳,朱杨军,张志超,等.亚微米K0.4MoO3电极材料的制备与电化学特性[J].江西师范大学学报(自然科学版),2017,(02):140-144.
　DAI Fang,ZHU Yangjun,ZHANG Zhichao,et al.Preparation and Electrochemical Property of Submicron-Structured K0.4MoO3 Electrode Material[J].Journal of Jiangxi Normal University:Natural Science Edition,2017,(02):140-144.
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亚微米K0.4MoO3电极材料的制备与电化学特性()
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《江西师范大学学报》（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年02期
页码:
140-144
栏目:
出版日期:
2017-03-01

文章信息/Info

Title:
Preparation and Electrochemical Property of Submicron-Structured K0.4MoO3 Electrode Material
作者:
代 芳; 朱杨军; 张志超; 廖钱生; 李 平; 章 磊; 温祖标
1.南昌工程学院江西省精密驱动与控制重点实验室,江西 南昌 330099; 2.江西师范大学化学化工学院,江西 南昌 330022
Author(s):
DAI Fang; ZHU Yangjun; ZHANG Zhichao; LIAO Qiansheng; LI Ping; ZHANG Lei; WEN Zubiao
1.Jiangxi Province Key Laboratory of Precision Drive & Control,Nanchang Institute of Technology,Nanchang Jiangxi 330099,China; 2.College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China
关键词:
电化学电容器;  电极材料;  电化学性能;  K0.4MoO3
Keywords:
electrochemical capacitors;  electrode material;  electrochemical property;  K0.4MoO3
分类号:
TM 53
文献标志码:
A
摘要:
以(NH4)6Mo7O24和K2CO3为反应物,采用高温固相法制备了系列KxMoO3(x=0.2、0.4、0.6、0.8)电极材料.分别采用X-射线衍射、扫描电子显微镜等对试样的晶型结构、形貌进行了表征; 用循环伏安、恒流充放电和交流阻抗等电化学方法研究了材料的电化学性质.结果表明,在相同的扫描速率或电流密度下它们的比电容的大小关系为:K0.4MoO3>K0.8MoO3>K0.6MoO3>K0.2MoO3,其中,K0.4MoO3在0.5 mol·L-1 K2SO4电解液中具有良好的倍率性能,且经600次循环充放电都表现出良好的循环稳定性.这意味着KxMoO3化合物可能是一种可选择的电化学电容器电极材料.
Abstract:
The electrode materials of submicron-structured KxMoO3(x=0.2,0.4,0.6,0.8)were synthesized by high temperature solid-state method using(NH4)6Mo7O24 and K2CO3 as reactants.X-ray diffraction,scanning electron microscopy were used to investigate the crystal structure,morphology of the prepared materials, respectively.Their electrochemical properties were evaluated by cyclic voltammetry,galvanostatic charge-discharge and electrochemical impedance spectroscopy.The results showed that specific capacitance of KxMoO3 is in the order of K0.4MoO3>K0.8MoO3 >K0.6MoO3>K0.2MoO3 at same scan rates or current density.Meanwhile,K0.4MoO3 electrode material exhibits excellent rate capability and super-cycling behavior of 600 charge-discharge cycles in 0.5 mol·L-1 K2SO4 electrolyte,which maybe have a promising prospect for application in electrochemical capacitors.

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备注/Memo

备注/Memo:
收稿日期:2016-08-04基金项目:国家自然科学基金(21463013)和江西省自然科学基金(20142BAB203013)资助项目.通信作者:章 磊(1968-),女,江西南昌人,副教授,主要从事电化学研究.E-mail:lzhang@jxnu.edu.cn
更新日期/Last Update: 1900-01-01