溶胶-凝胶法/水热法制备NH_4V_3O_8纳米带

Synthesis of NH_4V_3O_8 Nanobelts by Sol-gel/hydrothermal Method

NH4V3O8具有离子嵌入和脱出容易、导电性好、电化学性能稳定等优点,有望用作超级电容器的电极材料.本研究联用溶胶-凝胶法/水热法,通过优化前驱体浓度、铵盐浓度、溶液pH、水热温度、水热时间等条件,合成了形貌规整、尺寸均一的NH4V3O8纳米带.探讨了NH4V3O8纳米带在水热环境中的生长机理,建立了NH4V3O8纳米带的新合成方法.为进一步研究其电化学性能、工业化生产提供物质与实践基础.

With advantages of facilitating the intercalation/de intercalation of ions and good electrical conductivity as well as stable electrochemical performance,NH4 V3 O8 is a promising electrode material for supercapacitors.Sol gel method combined with hydrothermal method was conducted to synthesize NH4 V3 O8 nanobelts.Effects of presoma concentration,ammonium salt concentration,solution pH,reaction temperature and time on morphology of NH4 V3 O8 nanobelts were investigated and NH4 V3 O8 nanobelts in uniform size were obtained in optimal conditions.Growth mechanism of NH4V3 O8 nanobelts was preliminarily explored and a novel method to synthesize NH4 V3O8 nanobelts was thus established in this paper,which could provide material foundation for further research in electrochemical performance and hands on experiences for industrial production.