[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].,2017,(02):140-144.
点击复制

亚微米K0.4MoO3电极材料的制备与电化学特性()
分享到:

《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 FangZHU YangjunZHANG ZhichaoLIAO QianshengLI PingZHANG LeiWEN 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.

参考文献/References:

[1] Qu Qunting,Wang Gaojun,Liu Lili,et al.Excellent electrochemical behavior of LiMn2O4 in aqueous electrolyte [J].Funt Mater Lett,2011,3(3):3-5.
[2] Largeot C,Portet C,Chmiola J,et al.Relation between the ion size and pore size for an electric double-layer capacitor [J].J Am Chem Soc,2008,130:2730-2731.
[3] Simon P,Gogotsi Y.Materials for electrochemical capacitors [J].Nat Mater,2008,7:845-854.
[4] Zhang Qifeng,Uchaker E,Candelaria S L,et al.Nanomaterials for energy conversion and storage [J].Chem Soc Rev,2013,42:3127-3171.
[5] Wang Faxing,Xiao Shiying,Hou Yuyang,et al.Electrode materials for aqueous asymmetric supercapacitors [J].RSC Adv,2013,3:13059-13084.
[6] 朱杨军,代芳,于峰,等.硝酸改性活性炭电极材料的电化学性能研究 [J].复旦学报:自然科学版,2014,53(1):93-98.
[7] 万厚钊,缪灵,徐葵,等.MnO2基超级电容器电极材料 [J].化工学报,2013,64(3):801-813.
[8] Li Hong,Balaya P,Maier J.Li-storage via heterogeneous reaction in selected binary metal fluorides and oxides [J].J Electrochem Soc,2004,151(11):A1878-A1885.
[9] Tang Wei,Liu Lili,Zhu Yusong,et al..An aqueous rechargeable lithium battery of excellent rate capability based on a nanocomposite of MoO3 coated with PPy and LiMn2O4 [J].Energy Environ Sci,2012,5(5):6909-6913.
[10] Liu Yu,Zhang Baihe,Yang Yaqiong,et al.Polypyrrole-coated alpha-MoO3nanobelts with good electrochemical performance as anode materials for aqueous supercapacitors [J].J Mater Chem A,2013,1(43):13582-13587.
[11] 杨顺毅,王先友,魏建良,等.Na-Mn-O正极材料的合成及电化学性能 [J].物理化学学报,2008,24(9):1669-1674.
[12] 朱杨军,代芳,谭军艳,等.OMS-5型纳米MnO2电极材料的制备与电化学性能研究 [J].兵器材料科学与工程,2016,39(2):33-37.
[13] 刘亚菲,胡中华,任炼文,等.高性能活性炭电极材料在双电层电容器中的应用 [J].新型炭材料,2007,22(4):355-360.
[14] 孙现众,张熊,张大成,等.活性炭基Li2SO4水系电解液超级电容器 [J].物理化学学报,2012,28(2):367-372.
[15] Frackowiak E,Beguin F.Carbon materials for the electrochemical storage of energy in capacitors [J].Carbon,2001,39(6):937-950.
[16] 朱杨军,谭军艳,徐雅梅,等.纳米层状二氧化锰的制备及电化学性能研究 [J].江西师范大学学报:自然科学版,2015,39(6):551-555.
[17] Borgohain R,Li J,Selegue J P,et al.Electrochemical study of functionalized carbon nano-onions for high-performance supercapacitor electrodes [J].J Phys Chem C,2012,116(28):15068-15075.

相似文献/References:

[1]朱杨军,谭军艳,徐雅梅,等.纳米层状二氧化锰的制备及电化学性能研究[J].江西师范大学学报(自然科学版),2015,(06):551.
 ZHU Yangjun,TAN Junyan,XU Yamei,et al.The Preparation and Electrochemical Performances ofanostructured Layered Manganese Dioxide[J].,2015,(02):551.
[2]代 芳,朱杨军,李 平,等.纳米K-MnO2嵌入化合物的制备与电化学性能研究[J].江西师范大学学报(自然科学版),2016,40(06):551.
 DAI Fang,ZHU Yangjun,LI Ping,et al.The Preparation and Electrochemical Performance of Nanostructured K-MnO2 Intercalation Compound[J].,2016,40(02):551.

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