基于偶氮苯-碳纳米复合体的光伏分子储能基础研究

项目名称： 基于偶氮苯-碳纳米复合体的光伏分子储能基础研究

项目编号： No.51273144

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 封伟

作者单位： 天津大学

项目金额： 80万元

中文摘要： 偶氮苯分子在光激发下会发生异构化转变，从而在低能的稳态跃迁到高能量的亚稳态的过程中将太阳光能储存到化学键内，在受到电、热、光等外界因素刺激时，会释放出相应的化学能回复到稳态，这一能量转换、储存和释放的循环过程表现出独特的光伏储能效应。本项目拟以合成高能量密度的偶氮苯-碳纳米复合体为目标，探索其作为"太阳能燃料"应用于化学储能器件的可行性。以具有分子内强氢键作用的偶氮苯为基础，通过多种功能化方法，制备光诱导高活化能的偶氮苯-碳纳米复合体。系统研究材料的化学键、空间构型、接枝密度，结构参数以及辐照光的偏振性、频率、强度等光照参数对其活化能、热障、热稳定性等特性的调控规律，进而研究其能量存储密度、高能量亚稳态寿命和循环充放特性等关键参数，揭示在光吸收、存储和释放循环过程中的能态演变、化学储能和释放的基本规律，为其作为"太阳能燃料"应用于高效光伏化学储能技术的研发和应用奠定基础。

中文关键词： 偶氮基分子；石墨烯；光热转换；能量密度；相互作用

英文摘要： Azobenzeme (AZO) molecules isomerize under the irradiation and store the energy of sunlight through the process of changing from the steady state with low energy to the metastable state with higher energy. The metastable state will return to the steady state and release the stored energy of sunlight of under the stimulation of external factors, like electricity, heat, light, and so on. The energy transformation, storage and releasing in this process can ultimate solar energy uniquely. The aim of this project is to synthesize AZO-carbon nanomaterials hybrids with high energy density and investigate the possibility of the hybrids being applied in chemical energy storage as solar fuels. AZO-carbon nanomaterials hybrids with high photoinduction activation energy are synthesized based on AZO molecules intermolecular hydrogen bonds through various functionalization methods. It will be investigated in detail that the regulation rules of chemical bond, molecular conformation, grafting density, structural parameters and irradiation parameters, such as the polarization, frequency, intensity, to the parameters of the AZO-carbon nanomaterials hybrids such like activation energy, thermal barrier, thermal stability and so on. Subsequently, crucial parameters of the hybrids, such as the energy storage density, the life time of

英文关键词： azobenzene；graphene；photo-thermal conversion；energy density；interaction