共查询到19条相似文献,搜索用时 93 毫秒
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溶胶-凝胶法是一种常用的制备超级电容器纳米电极材料的方法。利用溶胶-凝胶法制备超级电容器纳米电极材料将为获得具有优异电化学性能的材料提供了重要的方法和基础。本文介绍了电容器的制备方法及优缺点,通过分析溶胶-凝胶法制备超级电容器纳米电极材料的工艺参数、影响因素与优化策略,通过探讨溶胶-凝胶法的发展历程和相关研究成果,希望可以为今后超级电容器纳米电极材料的研究提供参考。 相似文献
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溶胶凝胶技术具有其它传统的无机材料制备方法无可比拟的优点,以溶胶凝胶技术制备的产品均匀度好、纯度高、种类多及操作温度低,溶胶-凝胶技术已成为固体材料制备的主要方法。文章阐述了溶胶-凝胶法制备纳米粒子、纳米杂化材料与纳米薄膜的方法,并对溶胶凝胶法的基本原理、过程,以及对控制团聚和粒子的形状、大小的影响因素进行了综述。 相似文献
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胺类硅胶材料由于具有强吸附性能已经成为人们研究的热门课题,已应用于污水处理、生物医药等很多领域.胺类硅胶材料合成方法主要有包覆法、硅烷偶联剂法、溶胶-凝胶法和化学改性法.本文简单介绍了硅烷偶联剂法和溶胶-凝胶法合成胺类硅胶材料及其在生活中的应用. 相似文献
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采用溶胶-凝胶法合成掺Eu(BA),的SiO2发光材料。研究了凝胶玻璃中苯甲酸和稀土离子的配位情况,稀土离子的掺入浓度对发光性能的影响。通过红外光谱和荧光光谱证明了溶胶-凝胶法可以在SiO2中原位合成Eu(BA)3。 相似文献
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溶胶-凝胶法制备碳化硅研究进展 总被引:1,自引:0,他引:1
碳化硅陶瓷材料因其优良的物理、化学性质而备受关注,作为先进材料可广泛用于石油化工、机械工业、宇航和汽车工业.相比较传统的制备方法,溶胶-凝胶法具有合成温度低、纯度高和均匀性好等优点.在简述溶胶-凝胶法基本原理的基础上,较系统地评述了溶胶-凝胶法制备碳化硅纳米微粉、碳化硅一维纳米材料、碳化硅纳米复合陶瓷和多孔碳化硅陶瓷材料及其他碳化硅材料的研究现状,提出了今后溶胶-凝胶法制备碳化硅材料的主要研究方向. 相似文献
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具有核壳结构的包覆型复合粉末,兼具包壳层材料和内核材料两种物质的优良性能。溶胶-凝胶法用于制备陶瓷包覆型复合粉体,可以实现涂层包覆,且包覆层组织结构均匀致密。该文对溶胶-凝胶法制备陶瓷包覆型复合粉体的制备原理、方法及制备过程中各环节的影响因素进行了概述和分析;介绍了溶胶-凝胶法制备包覆型复合粉末的各类应用及其发展趋势。 相似文献
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Sol-gel processing may provide an alternative to the current tape cast powder method for manufacturing alumina substrates. The two methods are compared and advantages/disadvantages are discussed. One potential disadvantage of the sol-gel derived alumina substrates has been their brittleness after drying. The use of glycerol improves the flexibility of the prefired dried gels, making it possible to fabricate a variety of shapes through punching, cutting and laminating. 相似文献
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Sol-gel processing is well-known to be a powerful technique for designing materials for optical applications. Here, some recent applications of functionalized sol-gel coatings in optics are briefly reviewed. Lanthanide-doped oxide nanocrystals form a new promising class of nanophosphors allowing the easy sol-gel preparation of transparent and luminescent films for the development of light-emitting devices. Recent experiments on organized mesoporous films show their potential applications in optics, such as stable low-index layers in interferential antireflective devices or as silica binders in TiO 2-photocatalytic devices. 相似文献
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《分离科学与技术》2012,47(5):589-597
Abstract A procedure to immobilize quaternary ammonium salts in solid silica supports is described. The process is based on the doping of sol-gel glasses by organic anion-exchange compounds during the polymerization of the glasses. Sol-gel glasses doped with Aliquat 336, cetyltrimethylammonium bromide, or cetylpyridinium bromide may serve as solid anion exchangers, exhibiting selectivity properties similar to strong base ion exchangers. This process provides a simple method for the preparation of silica-based ion exchangers. This process provides a simple method for the preparation of silica-based ion exchangers. 相似文献
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FATHI A. SELMI VASANTHA R. W. AMARAKOON 《Journal of the American Ceramic Society》1988,71(11):934-937
A new technique (sol-gel coating of powders) was utilized to process electronic ceramics such as Sb-doped SnO2 and positive-temperature-coefficient-of-resistance (PTCR) BaTiO3 thermistors. Sol-gel coatings resulted in the densification via a liquid phase of Sb-doped SnO2 powders. PTCR thermistors were developed from BaTiO3 powders coated by a sol-gel composition containing dopants ( Y ), counterdopants (Mn, F), and additives (Si) with uniform microstructures and improved properties. Incorporation of F via the sol-gel coating increased the reliability of PTCR devices, making them less sensitive to reducing environments. This process may be extended to the processing of other electronic materials. 相似文献