采用溶胶-凝胶技术制备溶胶,结合提拉法镀膜,通过溶剂替换工艺在常压下制备出了纳米多孔结构的V2O5气凝胶薄膜.使用TEM、BET、椭偏仪分别观测和测试溶胶的形貌、气凝胶孔径分布以及薄膜的折射率和孔洞率.采用标准三电极法研究了薄膜的电化学伏安循环特性以及恒流充放电性质.研究结果表明,常压干燥制备的薄膜孔隙率达到了56%,比干凝胶薄膜提高了16%,而且比容量达到530mAh/g左右,比干凝胶薄膜提高了33%,可逆性也得到了改善.研究表明,这些性能的提高归因于常压干燥气凝胶薄膜较高的孔隙率以及较大的孔洞直径.
参考文献
[1] | Livage J.;Ganguli D. .Sol-gel electrochromic coatings and devices: A review[J].Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion,2001(3/4):365-381. |
[2] | Livage J. .SOL-GEL CHEMISTRY AND ELECTROCHEMICAL PROPERTIES OF VANADIUM OXIDE GELS[J].Solid state ionics,1996(2):935-942. |
[3] | 王晓峰,王大志,梁吉.超细氢氧化亚镍的溶胶凝胶法制备及其准电容特性[J].物理化学学报,2005(02):117-122. |
[4] | 葛秀涛,方大儒,刘杏芹.Ga2O3-NiO复合氧化物的溶胶-凝胶法制备和气敏性能[J].物理化学学报,2005(01):10-15. |
[5] | Surca A;Orel B .[J].Electrochimica Acta,1999,44:150. |
[6] | Fabrice Coustier;Gabriel Jarero;Stefano Passerini et al.[J].Smyrl J Power Sources,1999,83:9. |
[7] | Chaput F;Dunn B;Fuqua P et al.[J].J Non-Crystalline Solids,1995,188:11. |
[8] | Passerini S;Ressler J J;Le D B et al.[J].Electrochimica Acta,1999,44:2209. |
[9] | Owens B B;Smyrl W H;Xu J J .[J].Journal of Power Sources,1999,81-82:150. |
[10] | Winny Dong;Jeffrey S. Sakamoto;Bruce Dunn .Electrochemical properties of vanadium oxide aerogels[J].Science and technology of advanced materials,2003(1):3-11. |
[11] | Hirashima H;Sudoh K .[J].J Non-Crystalline Solids,1992,145:51. |
[12] | John H Harreld;Winny Dong;Bruce Dunn .[J].Materials Research Bulletin,1998,33:561. |
[13] | Fabrice Coustier;Jong-Min Lee;Stefano Passerini et al.[J].Smyrl Solid State Ionics,1999,116:279. |
[14] | Nilgun Ozer .[J].Thin Solid Films,1997,305:80. |
[15] | Livage J .[J].CHEMISTRY OF MATERIALS,1991,3:578. |
[16] | Takashi Watanabe;Yuji Ikeda;Takashi Ono et al.[J].Solid State Ionics,2002,151:313. |
[17] | 吴广明,王珏,沈军,杨天河,张勤远,周斌,邓忠生,范滨,周东平,张凤山.实验条件对纳米多孔SiO2薄膜结构及特性的影响[J].物理学报,2001(01):175-181. |
[18] | Kenny N;Kannewurf C R;Whitmore D H .[J].Journal of Physics and Chemistry of Solids,1966,27:1237. |
[19] | Urbach F .[J].Physical Review,1966,92:627. |
[20] | Sudoh K;Hirashima H .[J].J Non-Crystalline Solids,1992,147-148:386. |
[21] | Nilgun Ozer .[J].Thin Solid Films,1997,305:80. |
[22] | Yong-Top Kim;Sukumaran Gopukumar;Kwang-Bum Kim .[J].Journal of Power Sources,2003,117:110. |
[23] | Winny Dong;Jeffrey Sakamoto;Bruce Dunn .Electrochemical Properties of Vanadium Oxide Aerogels and Aerogel Nanocomposites[J].Journal of Sol-Gel Science and Technology,2003(1/2/3):641-644. |
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