全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电化学  2013 

电化学电容器氮化钒负极材料性能研究

, PP. 178-183

Keywords: 电化学电容器,氮化钒纳米晶,负极材料,比表面积,比电容

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用高温氨解还原氧化钒(V2O5)制备了氮化钒(VN)纳米材料.采用XRD、SEM与TEM观察分析样品的结构和形貌,采用氮气吸附、循环伏安曲线以及恒流充放电曲线测试样品的比表面积、孔径分布和电极电化学性能.结果表明,VN样品属于立方晶系(Fm3m[225]),其大小均一,近似球形,氨解时间的加长(12h),小颗粒间相互交联可形成一定的介孔.50mA?g-1电流密度下VN-c电极的比电容能达到192F.g-1,1000周期循环其比电容仍有150F.g-1,同时具有双电层电容性能和氧化还原反应的准电容性能.

References

[1]  Kodama M, Yamashita J, Soneda Y, et al. Preparation and electrochemical characteristics of N-enriched carbon foam[J]. Carbon, 2007, 45(5): 1105-1107.
[2]  Jang J H, Han S J, Hyeon T, et al. Electrochemical capacitor performance of hydrous ruthenium oxide/mesoporous carbon composite electrodes[J]. Journal of Power Sources, 2003, 123(1): 79-85.
[3]  Hsieh C T,Chen W Y,Cheng Y S. Influence of oxidation level on capacitance of electrochemical capacitors fabricated with carbon nanotube/carbon paper composites[J]. Electrochimica Acta, 2010, 55(19): 5294-5300.
[4]  Zhang H, Cao G P, Yang Y S, et al. Capacitive performance of an ultralong aligned carbon nanotube electrode in an ionic liquid at 60 oC[J]. Carbon, 2008, 46(1): 30-34.
[5]  Mondal S K, Barai K, Munichandraiah N. High capacitance properties of polyaniline by electrochemical deposition on a porous carbon substrate[J]. Electrochimica Acta, 2007, 52(9): 3258-3264.
[6]  Mastragostino M, Parventi R, Zanelli A. Supercapacitors based on composite polymer electrodes[J]. Journal of the Electrochemical Society, 2000, 147(9): 3167-3170.
[7]  Lian K, Tian Q F, Maier J. Solid asymmetric electrochemical capacitors using proton-conducting polymer electrolytes[J]. Electrochemical Communications, 2010, 12(4): 517-519.
[8]  She Q J(佘秋杰), Wei Z K(魏志凯), Zhen M S(郑明森), et al. Electrochemical performance of polytriphenylamine as a novel non-aqueous supercapcitor cathode material[J]. Journal of Electrochemistry(电化学), 2011, 17(1): 53-56.
[9]  Cheng J, Cao G P, Yang Y S. Characterization of sol-gel-derived NiOx xerogels as supercapacitors[J]. Journal of Power Sources, 2006, 159(1):734-741.
[10]  Sun L J, Liu X X, Lau K K, et al. Electrodeposited hybrid films of polyaniline and manganese oxide in nanofibrous structures for electrochemical supercapacitor[J]. Electrochimica Acta, 2008, 53(7): 3036-3042.
[11]  Chen X X(陈璇璇), Zhao Z Z(赵真真), Wang D C(王登超), et al. Synthesis of mesoporous nickel oxide for supercapacitor application[J]. Journal of Electrochemistry(电化学), 2011, 17(1): 48-52.
[12]  Conway B E,Electrochemical supercapacitors: Scientific fundamentals and technological applications[M]. New York: Kluwer Academic/Plenum Press, 1999.
[13]  Raymundo-Pi?ero E,Kierzek K,Machnikowski J,et al. Relationship between the nanoporous texture of activated carbons and their capacitance properties in different electrolytes[J]. Carbon, 2006, 44(12): 2498-2507.
[14]  Li W C, Reichenauer G, Fricke J. Carbon aerogels derived from cresol resorcinol formaldehyde for supercapacitors[J]. Carbon, 2002, 40(15): 2955-2959.
[15]  Sullivan M G, K?tz R, Haas O. Thick active layers of electrochemically modified glassy carbon electrochemical impedance studies[J]. Journal of the Electrochemical Society, 2000, 147(1): 308-317.
[16]  Wen Y H, Cao G P, Yang Y S. Studies on nanoporous glassy carbon as a new electrochemical capacitor material[J]. Journal of Power Sources, 2005, 148: 121-128.
[17]  Li W R,Chen D H,Li Z,et al. Nitrogen enriched mesoporous carbon spheres obtained by a facile method and its application for electrochemical capacitor[J]. Electrochemical Communications, 2007, 9(4): 569-573.
[18]  Su Y F, Wu F, Bao L Y, et al. RuO2/activated carbon composites as a positive electrode in an alkaline electrochemical capacitor[J]. New Carbon Materials, 2007, 22(1): 53-58.
[19]  Chmiola J, Yushin G, Dash R, et al. Effect of pore size and surface area of carbide derived carbons on specific capacitance[J]. Journal of Power Sources, 2006, 158(1): 765-772.
[20]  Choi D, Blomgren G E, Kumta P N. Fast and reversible surface redox reaction in nanocrystalline vanadium nitride supercapacitors[J]. Advanced Materials, 2006, 18(9): 1178-1182.
[21]  Zhou X P,Chen H Y,Shu D,et al. Study on the electrochemical behavior of vanadium nitride as a promising supercapacitor material[J]. Journal of Physics and Chemistry of Solids, 2009, 70(2): 495-500.
[22]  Glushenkov A M, Hulicova-Jurcakova D, Llewellyn D, et al. Structure and capacitive properties of porous nanocrystalline VN prepared by temperature-programmed ammonia reduction of V2O5[J]. Chemistry of Materials, 2010, 22 (3): 914-921.
[23]  Tian M Y(田明原),Shi E W(施尔畏),Zhong W Z(仲维卓),et al. Nano ceramics and nano ceramic powder[J]. Journal of Inorganic Materials(无机材料学报), 1998, 13(2): 129-137.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133