合成方式对单壁碳纳米管基电极材料结构及电化学性能的影响

王颖慧; 邱汉迅; 王钊; 李静; 申潇; 杨俊和

合成方式对单壁碳纳米管基电极材料结构及电化学性能的影响

王颖慧^1,2,
邱汉迅^2,,
王钊^1,2,
李静²,
申潇²,
杨俊和²

1.
上海理工大学环境与建筑学院, 上海 200093;
2.
上海理工大学材料科学与工程学院, 上海 200093

基金项目: 国家自然科学基金项目(51102167,U1260104); 上海市浦江人才计划项目(11PJ1407200); 上海市教委科技创新项目(12YZ101).

详细信息

作者简介:
王颖慧,硕士研究生. E-mail: zhimeng1013@163.com

通讯作者:
邱汉迅, 副教授. E-mail: hxqiu@usst.edu.cn; 杨俊和,教授. E-mail: jhyang@usst.edu.cn

中图分类号: TB33
计量
- 文章访问数: 856
- HTML全文浏览量: 137
- PDF下载量: 826
- 被引次数: 0
出版历程
- 收稿日期: 2015-01-10
- 录用日期: 2015-09-07
- 修回日期: 2015-06-02
- 刊出日期: 2015-06-28

Synthesis of SWCNT-GO/MnO₂ nanocomposites for use as electrodes of electrochemical capacitors by microwave and hydrothermal methods

1.
School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China;
2.
School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Funds: National Natural Science Foundation of China (51102167, U1260104); Shanghai Technology Talents Funds (11PJ1407200); Innovation Program of Shanghai Municipal Education Commission Program of China (12YZ101).

摘要

摘要: 采用单壁碳纳米管作为合成电容器电极材料的基础原料,以氧化石墨烯提高单壁碳纳米管的分散性,以二氧化锰来增强其比电容,分别采用微波处理与传统水热法合成复合材料,重点探讨不同合成方式对电极材料结构及性能的影响。与传统水热法相比,微波法除了具有操作简便、加热时间短等优点外,合成的复合材料具有更均一的微观结构,且更加均匀的覆盖在碳质材料的表面,因而作为超级电容器电极材料时能表现出更优良的电学性能:在0.2A/g的电流密度下,其比电容达173F/g,比传统水热法合成的材料高出24.5%;具有更低的电荷转移电阻,仅为1.425Ω;更高的充放电稳定性,在20mV/s的扫描速率下循环1000次,电容损失率仅为3.74%。
- 微波合成 /
- 水热合成 /
- 碳纳米管 /
- 氧化石墨烯 /
- 二氧化锰 /
- 电化学性能
Abstract: HNO₃-oxidized single-wall carbon nanotubes (SWCNTs) and graphene oxide (GO) were ultrasonically dispersed in water to which potassium permanganate was added, and the resulting mixtures were treated under microwave radiation at 100℃ for 1h or hydrothermal conditions at 100℃ for 1, 5 and 10h to prepare SWCNT-GO/MnO₂ composites as electrode materials of electrochemical capacitors. Results indicate that the composite prepared using the microwave method has a higher specific capacitance (173F/g at 0.2A/g), lower pseudo-charge transfer resistance (1.425 Ω) and longer cyclic stability (3.74% capacitance loss after 1000 cycles at the scan rate of 20mV/s) than the ones prepared using the hydrothermal method. Moreover, the microwave method has the advantages of simplicity of operation and shorter heating time.
- Microwave synthesis /
- Hydrothermal synthesis /
- Carbon nanotube /
- Graphene oxide /
- MnO₂ /
- Electrochemical performance

HTML全文

参考文献(23)

Im C, Yun Y S, Kim B, et al. Amorphous carbon nanotube/MnO₂/graphene oxide ternary composite electrodes for electrochemical capacitors
[J]. Journal of Nanoscience and Nanotechnology, 2013, 13(3): 1765-1768.

ZHENG Dong-fang, JIA Meng-Qiou, XU Bin, et al. The simple preparation of a hierarchical porous carbon with high surface area for high performance supercapacitors
[J]. New Carbon Materials, 2013, 28(2): 151-154. (郑冬芳, 贾梦秋,徐斌,等. 高性能超级电容器用高比表面积、层次孔结构炭材料的简便制备
[J].新型炭材料, 2013, 28(2): 151-154.)

Ye J S, Liu X, Cui H F, et al. Electrochemical oxidation of multi-walled carbon nanotubes and its application to electrochemical double layer capacitors
[J]. Electrochemistry Communications, 2005, 7(3): 249-255.

An K H,Kim W S,Park Y S.Supercapacitors using single-walled carbon nanotube electrodes
[J]. Advanced Materials, 2006, 13(7): 497-500.

Liu Z, Dong X, Song L, et al. Carboxylation of multiwalled carbon nanotube enhanced its biocompatibility with L02 cells through decreased activation of mitochondrial apoptotic pathway
[J]. Journal of Biomedical Materials Research Part A, 2014, 102(3): 665-673.

Kim I H, Kim J H, Lee Y H, et al. Synthesis and characterization of electrochemically prepared ruthenium oxide on carbon nanotube film substrate for supercapacitor applications
[J]. Journal of the Electrochemical Society, 2005, 152(11): A2170-A2178.

Kim I H, Kim J H, Cho B W, et al. Synthesis and electrochemical characterization of vanadium oxide on carbon nanotube film substrate for pseudocapacitor applications
[J]. Journal of the Electrochemical Society, 2006, 153(6): A989-A996.

Jin Y, Chen H, Chen M, et al. Graphene-patched CNT/MnO₂ nanocomposite papers for the electrode of high-performance flexible asymmetric supercapacitors
[J]. ACS Applied Materials & Interfaces, 2013, 5(8): 3408-3416.

Ghosh A, Lee Y H. Carbon-based electrochemical capacitors
[J]. Chem Sus Chem, 2012, 5(3): 480-499.

Han P, Yue Y, Liu Z, et al. Graphene oxide nanosheets/multi-walled carbon nanotubes hybrid as an excellent electrocatalytic material towards VO²⁺/VO₂⁺ redox couples for vanadium redox flow batteries
[J]. Energy & Environmental Science, 2011, 4(11): 4710-4717.

You B, Li N, Zhu H, et al. Graphene oxide-dispersed Pristine CNTs Support for MnO₂ nanorods as high performance supercapacitor electrodes
[J]. Chem Sus Chem, 2013, 6(3): 474-480.

Meher S K, Rao G R. Enhanced activity of microwave synthesized hierarchical MnO₂ for high performance supercapacitor applications
[J]. Journal of Power Sources, 2012, 215: 317-328.

Bilecka I, Niederberger M. Microwave chemistry for inorganic nanomaterials synthesis
[J]. Nanoscale, 2010, 2(8): 1358-1374.

Hung C J, Lin P, Tseng T Y. Electrophoretic fabrication and pseudocapacitive properties of graphene/manganese oxide/carbon nanotube nanocomposites
[J]. Journal of Power Sources, 2013, 243: 594-602.

Brousse T, Toupin M, Dugas R, et al. Crystalline MnO₂ as possible alternatives to amorphous compounds in electrochemical supercapacitors
[J]. Journal of the Electrochemical Society, 2006, 153(12): A2171-A2180.

Cheng Y, Lu S, Zhang H, et al. Synergistic effects from graphene and carbon nanotubes enable flexible and robust electrodes for high-performance supercapacitors
[J]. Nano Letters, 2012, 12(8): 4206-4211.

Kundu M, Liu L. Direct growth of mesoporous MnO₂ nanosheet arrays on nickel foam current collectors for high-performance pseudocapacitors
[J]. Journal of Power Sources, 2013, 243: 676-681.

Li Z, Mi Y, Liu X, et al. Flexible graphene/MnO₂ composite papers for supercapacitor electrodes
[J]. J Mater Chem, 2011, 21(38): 14706-14711.

Lee S W, Kim J, Chen S, et al. Carbon nanotube/manganese oxide ultrathin film electrodes for electrochemical capacitors
[J]. ACS Nano, 2010, 4(7): 3889-3896.

Meher S K, Justin P, Rao G R. Pine-cone morphology and pseudocapacitive behavior of nanoporous nickel oxide
[J]. Electrochimica Acta, 2010, 55(28): 8388-8396.

Zhao X, Sánchez B M, Dobson P J, et al. The role of nanomaterials in redox-based supercapacitors for next generation energy storage devices
[J]. Nanoscale, 2011, 3(3): 839-855.

Hou Y, Cheng Y, Hobson T, et al. Design and synthesis of hierarchical MnO₂nanospheres/carbon nanotubes/conducting polymer ternary composite for high performance electrochemical electrodes
[J]. Nano Letters, 2010, 10(7): 2727-2733.

施引文献

资源附件(0)

访问统计