以焦粉为原料,用HNO3预处理除灰,采用KOH浸渍-煅烧活化法制备焦粉活性炭(CPAC),通过场发射扫描电子显微镜、X射线衍射等表征其形貌,采用BET测试其比表面积、孔结构及孔径分布.初步考察了活化温度、活化时间等对焦粉活性炭电极材料电化学性能的影响.采用共沉淀法制备CPAC/Al-Ni(OH)2复合电极材料,通过恒电流充放电测试及循环伏安测试表征CPAC/Al-Ni(OH)2复合电极材料的电化学性能.结果表明,当活化温度为800℃、活化时间为3h制得的焦粉活性炭电极材料的电化学性能最佳,比电容达到211 F/g.CPAC-800 ℃-3 h/Al-Ni(OH)2复合电极材料随Al掺杂量的增大呈现先增大后减小的趋势.在固定Al质量掺杂量为4％,炭镍质量比为1∶1时所得复合材料的比电容量最大:1173.6 F/g.恒电流充放电及循环伏安测试表明Al掺杂量为4％、炭镍比为1∶1的复合材料具有较好的电化学性能.
参考文献
| [1] | Yoon J L,Ji C J,Sunyoung P,et al.Preparation and Performance of Cobalt-doped Carbon Aerogel for Supercapacitor[J].Korean J Chem Eng,2011,28(2):492-496. |
| [2] | Wang X Y,Liu L,Wang X Y,et al.Preparation and Performances of Carbon Aerogel Microspheres for the Application of Supercapacitor[J].J Solid State Electrochem,2011,15:643-648. |
| [3] | HUANG Bin,JIANG Qi,XIE Deyu,et al.Preparation of Polyaniline Hollow Micro-sphere Materials with Template Method and Its Electrochemical Properties[J].J Funct Mater,2011,42(1):144-147(in Chinese).黄彬,江奇,谢德钰,等.模板法制备聚苯胺空心微球材料及其电化学性能[J].功能材料,2011,42(1):144-147. |
| [4] | Tang L,Zhang L,Yang G Z,et al.Preparation of Mesoporous Carbon Microsphere/Activated Carbon Composite for Electric Double-layer Capacitors[J].New Carbon Mater,2011,26 (3):237-240. |
| [5] | LI Qiang,LI Kaixi,WANG Furong,et al.Preparation of High Porosity Carbon Electrodes from Raw Needle Coke and Their Characterization for EDLCs[J].New Carbon Mater,2005,20 (4):335-342 (in Chinese).李强,李开喜,王芙蓉,等.针状焦基活性炭的制备及其作为EDLCs电极材料的电化学性能[J].新型炭材料,2005,20(4):335-342. |
| [6] | ZHANG Zhian,SUN Xiaofeng,LAI Yanqing,et al.Effects of Particle Size of Petroleum Cokes on Material and Electrochemical Property of Activated Carbon[J].J Funct Mater,2009,40 (5):813-816 (in Chinese).张治安,孙晓峰,赖延清,等.原料粒度对石油焦基活性炭性能的影响[J].功能材料,2009,40(5):813-816. |
| [7] | WEN Yuehua,CAO Gaoping,CHENG Jie,et al.Pore Formation Mechanism of Nanoporous Glassy Carbon and."Shell·core" Structure[J].J Inorg Mater,2006,21(2):441-447(in Chinese).文越华,曹高萍,程杰,等.纳米孔玻态炭的成孔机理与"壳芯"结构[J].无机材料学报,2006,21(2):441-447. |
| [8] | F Estaline Amitha,A Leela Mohana Reddy,Ramaprabhu S.A Non-aqueous Electrolyte-based asymmetric Supercapacitor with Polymer and Metal Oxide/multiwalled Carbon Nanotube Electrodes[J].J Nanopart Res,2009,11:725-729. |
| [9] | Li L X,Li F.The Effect of Carbonyl,Carboxyl and Hydroxyl Groups on the Capacitance of Carbon Nanotubes[J].New Carbon Mater,2011,26 (3):224-228. |
| [10] | Hsieh C,Chen W,Cheng Y S.Influence of Oxygen Level on Capacitance of Electrochemical Capacitors Fabricated with Carbon Nanotube/carbon Paper Composites[J].Electrochim Acta,2010,55:5294-5300. |
| [11] | Seo M K,Park S J.Electrochemical Characteristics of Activated Carbon Nanofiber Electrodes for Supercapacitors[J].Mater Sci Eng B,2009,164:106-111. |
| [12] | Hsieh C,Teng H.Influence of Oxygen Treatment on Electric Double-layer Capacitance of Activated Carbon Fabrics[J].Carbon,2002,40:667-674. |
| [13] | Yan J,Wei T,Shao B,et al.Preparation of a Graphene Nanosheet/polyaniline Composite with High Specific Capacitance[J].Carbon,2010,48:487-493. |
| [14] | Wu Z S,Ren W C,Wang D W,et al.High-energy MnO2 Nanowire/Graphene and Graphene Asymmetric Electrochemical Capacitors[J].ACS Nano,2010,4(10):5835-5842. |
| [15] | Li Z P,Wang J Q,Liu X H,et al.Electrostatic Layer-by-Layer Self-Assembly Multilayer Films Based on Graphene and Manganese Dioxide Sheets as Novel Electrode Materials for Supercapacitors[J].J Mater Chem,2011,21:3397-3403. |
| [16] | Zhang K,Zhang L L,Zhao X S,et al.Graphene/polyaniline Nanofiber Composites as Supercapacitor Electrodes[J].Chem Mater,2010,22(4):1392-1401. |
| [17] | Portet C,Taberna P L,Simon P,et al.High Power Density Electrodes for Carbon Supercapacitor Applications[J].Electrochim Acta,2005,50 (20):4174-4181. |
| [18] | Burke A.Ultracapacitore; Why,How,and Where is the Technology[J].J Power Sources,2000,91 (1):37-50. |
| [19] | Conway B E.Electrochemical Supercapacitors:Scientific Fundamentals and Technological Applications[M].New York:Kluwer Academic/Plenum Publishers,1999:105-297. |
| [20] | Lee H Y,Goodenough J B.Supercapacitor Behavior with KCI Electrolyte[J].J Solid State Chem,1999,144:220-223. |
| [21] | Shen X Q,Jing M X,Zhou J X,et al.Electrochemical Capacitance Characteristics for Nano-NiO/C Composite Electrode[J].J Funct Mater,2005,36(9):1459-1462. |
| [22] | Lang J W,Kong L B,Liu M,et al.Asymmetric Supercapacitors Based on Stabilized α-Ni (OH)2 and Activated Carbon[J].J Solid State Electrochem,2010,14:1533-1539. |
| [23] | ZHUANG Xinguo,CHENG Jie,YANG Dongping,et al.Structure and Electrochemical Characters of Nano-sized Ni(OH) 2-C Prepared by Precipitation-transformation Method[J].J lnorg Mater,2005,20(2):337-344(in Chinese).庄新国,程杰,杨冬平,等.沉淀转化法制备的Ni(OH) 2-C复合材料的结构和电化学性能[J].无机化学学报,2005,20(2):337-344. |
| [24] | HUANG Qinghua,WANG Xianyou,LI Jun,et al.Application of Ni(OH)2 Activated Carbon Composite in the Hybrid Supercapacitors[J].Chinese J Process Eng,2007,7 (5):1035-1039 (in Chinese).黄庆华,王先友,李俊,等.Ni(OH)2/活性炭复合材料在超级电容器中的应用[J].过程工程学报,2007,7(5):1035-1039. |
| [25] | LIU Min.Study on Metal Hydroxide/Activated Carbon Hybrid Snpercapacitor with High Capacity[D].Lanzhou:Lanzhou University of Teehnology,School of Material Science and Engineering,2010(in Chinese).刘敏.高容量金属氢氧化物/活性炭混合超级电容器的组装及性能研究[D].兰州:兰州理工大学材料科学与工程学院,2010. |
| [26] | LUO Heming,YU Shurong,FENG Huixia,et al.The Mechanism and Properties of Methylene Blue Adsorption on Modified Coke Powder[J].J China Coal Soc,2009,34(7):971-976(in Chinese).雒和明,俞树荣,冯辉霞,等.改性焦粉对亚甲基蓝吸附特性及其机理[J].煤炭学报,2009,34(7):971-976. |
| [27] | Yuan G H,Jiang Z H,Aramata A,et al.Electrochemical Behavior of Activated Carbon Capacitor Material Loaded with Nickel Oxide[J].Carbon,2005,43(14):2913-2917. |
| [28] | WANG Xiaofeng,KONG Xianghua.Research on New Type NiOx/KOH/C Supercapacitor[J].J Inorg Mater,2001,16(5):815-820(in Chinese).王晓峰,孔祥华.新型氧化镍超电容器电极材料的研究[J].无机材料学报,2001,16(5):815-820. |
| [29] | Zheng L P,Wang Y,Wang X Y,et al.The Effects of Surface Modification on the Supercapacitive Behaviors of Carbon Derived from Calcium Carbide[J].J Mater Sci,2010,45:6030-6037. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%