Preparation and properties of homogeneous V2O5-SiO2 xerogel composite based on interpenetrating polymer network
Preparation and properties of homogeneous V2O5-SiO2 xerogel composite based on interpenetrating polymer network
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DOI：
10.1016/j.jssc.2003.09.043
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发表时间：
2004-03-01
影响因子：
3.3
通讯作者：
Oliveira, HP
中科院分区：
文献类型：
--
作者：
Barbosa, GN;Brunello, CA;Oliveira, HP
在本文中，我们报告的导电和电化学性能的均匀的V2 O 5-SiO2干凝胶复合材料获得的同时聚合在两个无机组分（Si-O和V-O基聚合物）形成互穿聚合物网络，其中的相互“溶解度”，由于交联和缠结观察。V2 O 5在二氧化硅基质中的存在对电导率有很强的影响;测量显示室温电导率几乎比文献中发现的高1000倍。此外，电化学行为是非常相似的V2 O 5干凝胶中发现。此外，热处理对导电和电化学性能的影响进行了研究。发现这两种性能都得到改善，而对V105干凝胶层状结构没有显著影响。(C)2003年爱思唯尔公司All rights reserved.
In this paper, we report the conducting and electrochemical properties of a homogeneous V2O5-SiO2 xerogel composite obtained from the simultaneous polymerization in both inorganic components (Si-O and V-O based polymers) forming an interpenetrating polymer network, where a mutual "solubility" due to cross-links and entanglements was observed. The presence of V2O5 inside the silica matrix has a strong effect on electrical conductivity; measurements showed room temperature conductivity almost 1000 times higher than what is found in the literature. In addition, the electrochemical behavior is quite similar to that found in V2O5 xerogel. Moreover, the effects of thermal treatment on the conducting and electrochemical properties were investigated. It was found that both properties were improved with no significant effect on V,05 xerogel layered structure. (C) 2003 Elsevier Inc. All rights reserved.