通过化学置换镀银的方法在金属铜网表面沉积银镀层以使其表面粗糙化,然后在十二烷硫醇/乙醇混合溶液中浸泡,进行低表面能物质的表面修饰,制备出接触角达到约150°的超疏水铜网。对该铜网的表面结构及超疏水性能进行了分析。利用超疏水表面的电致润湿特性,设计此铜网为智能电池的关键部件—电解液隔板。当智能电池在存储阶段,电解液隔板可以阻止电解液与电极接触,杜绝电池自放电的发生。当电池使用的时候,在外加电场刺激下,该铜网由疏水特性转变为亲水特性,从而使电解液自由通过此铜网。本研究对防止电池的自放电具有指导意义。
Facile galvanic replacement was adopted to grow dendrite coral-like silver films on commercial copper meshes.Silver films possess dual structure distinguished both in miacro and nano scales.After the immersion process in an ethanol solution of n-dodecanethiol,the rough silver films exhibit the superhydrophobic property with a contact angle of about 150°.Furthermore,such copper mesh can be used to be the electrolyte separator for smart batteries with the electrowetting process.At the storage phase of the battery,the copper mesh can effectively prevent the contact between the electrolyte and the electrodes.With a stimulation of external electric field,the wettability of the copper mesh can be changed from hydrophobicity to hydrophilicity,allowing the electrolyte contact the electrodes.Our study shows that the superhydrophobic copper mesh would have potential applications in smart batteries.
参考文献
| [1] | 顾春元,狄勤丰,施利毅,吴非,王文昌,余祖斌.纳米粒子构建表面的超疏水性能实验研究[J].物理学报,2008(05):3071-3076. |
| [2] | 刘圣,耿兴国,周晓峰,吴建华,欧修龙,高鹏.铝及铝合金表面超疏水协和涂层的制备与性能研究[J].中国表面工程,2008(03):30-34. |
| [3] | 宋明玉,李继军,吴耀德,陈海燕.制备金属铜基底超疏水性表面试验研究[J].长江大学学报(自科版)理工卷,2009(01):29-30. |
| [4] | Gu, CD;Ren, H;Tu, JP;Zhang, TY .Micro/Nanobinary Structure of Silver Films on Copper Alloys with Stable Water-Repellent Property under Dynamic Conditions[J].Langmuir: The ACS Journal of Surfaces and Colloids,2009(20):12299-12307. |
| [5] | Wenzel R N .Resistance of Solid Surfaces to Wetting by Water[J].Industrial and Engineering Chemistry,1936,28(08):988-994. |
| [6] | Cassie A;Baxter S .Wettability of Porous Surfaces[J].Transactions of the Faraday Society,1944,40:546-551. |
| [7] | Neelesh A.Patankar .Transition between Superhydrophobic States on Rough Surfaces[J].Langmuir: The ACS Journal of Surfaces and Colloids,2004(17):7097-7102. |
| [8] | Ralf Blossey .Self-cleaning surfaces-virtual realities[J].Nature materials,2003(5):301-306. |
| [9] | Kind H.;Emmenegger C.;Nilsson LO.;Hernadi K. Maillard-Schaller E.;Schlapbach L.;Forro L.;Kern K.;Bonard JM. .Patterned films of nanotubes using microcontact printing of catalysts[J].Advanced Materials,1999(15):1285-1289. |
| [10] | Hartmut Gau;Stephan Herminghaus;Peter Lenz .Liquid Morphologies on Structured Surfaces: From Microchannels to Microchips[J].Science,1999(5398):46-49. |
| [11] | Jason Heikenfeld;Manjeet Dhindsa .Electrowetting on Superhydrophobic Surfaces: Present Status and Prospects[J].Journal of Adhesion Science and Technology: The International Journal of Theoredtical and Basic Aspects of Adhesion Science and Its Applications in All Areas of Technology,2008(3/4):319-334. |
| [12] | Victor A. Lifton;Steve Simon;Robert E. Frahm .Reserve Battery Architecture Based on Superhydrophobic Nanostructured Surfaces[J].Bell Labs Technical Journal,2005(3):81-85. |
| [13] | 乔卫,朱定一,温鸿英,王尤生,廖琳.金属表面超疏水性的研究进展[J].材料导报,2009(19):45-49,56. |
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