采用H2O2对石墨毡(GF)进行预处理,然后在其表面电沉积Sn,最后在120℃烘箱氧化24 h制备出SnO2修饰的石墨毡电极.通过扫描电镜(SEM)对SnO2修饰前后的石墨毡表面形貌进行表征,采用循环伏安法研究了SnO2修饰后石墨毡电极的电化学性能.结果表明:SnO2能够均匀地包覆在石墨毡表面;SnO2修饰石墨毡后V4+/V5+电对的氧化峰的峰电流由0.053 8 A增加到0.070 8 A,与未处理石墨毡相比增加了31.5％,反应峰出峰持续时间提高,说明SnO2对V4+/V5+电对电极过程具有一定的催化作用.析氧电位由1.382 V增加到了1.517 V,使电极在VOSO4溶液中的电化学窗口变宽.
参考文献
| [1] | Raghu S C,Ulaganathan M,Lim T M,et al.Electrochemical behaviour of titanium/iridium (Ⅳ) oxide:tantalum pentoxide and graphite for application in vanadium redox flow battery[J].Journal of Power Sources,2013,238:103-108. |
| [2] | Sun B,Skyllas-Kazacos M.Chemical modification and electrochemical behaviour of graphite fiber in acidic vanadium solution[J].ElectrochimicaActa,1991,36(7):513-517. |
| [3] | 王文红,薛方勤,王新东,等.Ir修饰碳毡对VO2+/VO2+电对电催化性能的影响[J].材料研究学报,2007,21(5):542-546.Wang Wenhong,Xue Fangqin,Wang Xindong,et al.Electrocatalytic activity of Ir-modified carbon felt for VO2+/VO2+redox reaction[J].Chinese Journal of Materials Research,2007,21(5):542-546. |
| [4] | Wang W H,Wang X D.Investigation of Ir-modified carbon felt as the positive electrode of an all-vanadium redox flow battery[J].Electrochimica Acta,2007,24 (52):6755-6762. |
| [5] | Wei G J,Jia C K,Liu J G,et al.Carbon felt supported carbon nanotubes catalysts composite electrode for vanadium redox flow battery application[J].Journal of Power Sources,2012,220:185-192. |
| [6] | Li W Y,Liu J G,Yan C W.Multi walled carbon nanotubes used as an electrode reaction catalyst for VO2+/VO2+ for a vanadium redox flow battery[J].Carbon,2011,49(11):3463-3470. |
| [7] | 黄峰,詹晖,周运鸿,等.纳米SnO2负极的电化学性质[J].应用化学,2007,24(3):268-272.Huang Feng,Zhan Hui,Zhou Yunhong,et al.Electrochemical study of nano SnO2 anode[J].Chinese Journal of Applied Chemistry,2007,24(3):268-272. |
| [8] | Fockedey E,Lierde A V.Coupling of anodic and cathodic reactions for phenol electro-oxidation using three-dimensional electrodes[J].Water Research,2002,36(16):4169-4175. |
| [9] | Liu Y,Li Z Y,Li J H.IrO2/SnO2 electrodes:prepared by sol-gel process and their electrocatalytic for pyrocatechol[J].Acta Material,2004,52(3):721-727. |
| [10] | Polcaro A M,Palmas S,Renoldi F,et al.On the performance of Ti/SnO2 and Ti/PbO2 anodesin electrochemical degradation of 2-chlorophenol for wastewater treatment[J].Journal of Applied Electrochemistry,1999,29(2):147-151. |
| [11] | Floner D,Geneste F.Homogeneous coating of graphite felt by nickel electrodeposition to achieve light nickel felts with high surface area[J].Electrochemistry Communications,2007,9(9):2271-2275. |
| [12] | 代文彪.酸性硫酸盐光亮镀锡添加剂的应用[J].材料保护,2007,40(7):70-71.Dai Wenbiao.Application of additives for bright tin electroplating from acidic sulfate bath[J].Materials Protection,2007,40(7):70-71. |
| [13] | 袁俊,余晴春,刘逸枫,等.全钒液流电池性能及其电极材料的研究[J].电化学,2006,12(3):271-274.Yuan Jun,Yu Qingchun,Liu Yifeng,et al.Studies on performance and electrode materials for all vanadium flow battery[J].Electrochemistry,2006,12(3):271-274. |
| [14] | Kang Y Q,Cao M S,Yuan J,et al.Preparation and microwave absorption properties of basalt fiber/nickel core-shell heterostructures[J].Journal of Alloys and Compounds,2010,495(1):254-259. |
| [15] | Zou G Z,Cao M S,Zhang L,et al.A nanoscale core-shell of β-SiCP-Ni prepared by electroless plating at lower temperature[J].Surface and Coatings Technology,2006,201 (1):108-112. |
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%