High Energy Density, High Thermal Conductivity Latent Heat Storage using Inorganic Nanocomposites

使用无机纳米复合材料的高能量密度、高导热性潜热存储

• 批准号: 1236656
• 负责人: Robert Wang
• 金额: $ 29.26万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1236656&HistoricalAwards=false
• 关键词: Energy; Density; Thermal; Conductivity; Latent

CBET-1236656PI: Robert WangThis project explores the use of inorganic nanocomposites as a medium for thermal energy storage. Energy density and charging/discharging time are two very important metrics for this field. The intellectual merit of this project is that it can potentially lead to large improvements in both metrics simultaneously. The nanocomposites in this project consist of a solid inorganic matrix with embedded metallic phase change nanoparticles. The common thermal storage analogue to these composites is a solid polymer matrix with embedded organic phase change materials (e.g. paraffin). This project?s nanocomposite design leads to higher volumetric energy densities because metals have much higher enthalpies of fusion than organic phase change materials. This nanocomposite design also leads to faster charging/discharging times because inorganic materials have much higher thermal conductivities than polymers. An additional benefit of using metallic nanoparticles is that their melting temperature is size-dependent. This means that the thermal storage temperature of these nanocomposites is not inextricably linked to chemical composition and can be a flexible design variable. Furthermore, since inorganic materials have excellent thermal stability, these nanocomposites can operate at temperatures inaccessible to polymer-based composites. To investigate the thermal storage potential of these composites, the melting temperature, enthalpy of fusion, and thermal conductivity will be measured for nanocomposites of varying composition, nanoparticle size, and nanoparticle volume fraction. Thermal cycling experiments will also be done to test the stability and durability of these materials. These nanocomposites will be synthesized using solution-phase chemistries, which allow variation of the matrix material and elegant control over nanoparticle size, shape, composition, and volume fraction. The precise control over composite microstructure of this fabrication technique will allow fundamental studies on phase change and materials design rules for thermal energy storage. The broader impacts of this project are that its unexplored nanocomposite concept could significantly improve the performance of thermal storage materials; hence it could change the breadth and scope of thermal energy storage applications. On large manufacturing scales, this nanocomposite concept could improve thermal storage for solar thermal power generation and buildings thermal management. On small manufacturing scales, this nanocomposite concept could improve electronics thermal management by quenching transient power spikes. This project also includes a comprehensive outreach plan that addresses multiple education levels. This plan: (1) Engages K-12 students via interactive on-site presentations in their classrooms that focus on thermal energy and related topics. (2) Designs a laboratory module on colloidal nanoparticle synthesis for incorporation into curriculum at the community college level.

CBET-1236656 PI：Robert Wang这个项目探索了无机纳米复合材料作为热能储存介质的用途。能量密度和充电/放电时间是该领域的两个非常重要的指标。这个项目的智力价值在于，它可能会同时导致两个指标的大幅改进。该项目中的纳米复合材料由嵌入金属相变纳米颗粒的固体无机基质组成。这些复合材料的常见储热类似物是嵌入有机相变材料（例如石蜡）的固体聚合物基质。这个项目？的纳米复合材料设计导致更高的体积能量密度，因为金属具有比有机相变材料高得多的熔化率。这种纳米复合材料的设计也导致更快的充电/放电时间，因为无机材料具有比聚合物高得多的热导率。使用金属纳米颗粒的另一个好处是它们的熔化温度取决于尺寸。这意味着这些纳米复合材料的储热温度与化学成分没有必然的联系，可以是一个灵活的设计变量。此外，由于无机材料具有优异的热稳定性，这些纳米复合材料可以在聚合物基复合材料无法达到的温度下工作。为了研究这些复合材料的储热潜力，将测量不同组成、纳米颗粒尺寸和纳米颗粒体积分数的纳米复合材料的熔化温度、熔化焓和热导率。还将进行热循环实验以测试这些材料的稳定性和耐久性。这些纳米复合材料将使用溶液相化学合成，这允许基质材料的变化和对纳米颗粒尺寸，形状，组成和体积分数的优雅控制。这种制造技术对复合材料微观结构的精确控制将允许对相变和热能存储材料设计规则进行基础研究。该项目更广泛的影响是，其未开发的纳米复合材料概念可以显着提高储热材料的性能;因此，它可以改变热能存储应用的广度和范围。在大规模生产中，这种纳米复合材料概念可以改善太阳能热发电和建筑热管理的储热能力。在小规模制造中，这种纳米复合材料概念可以通过抑制瞬态功率尖峰来改善电子热管理。该项目还包括一项针对多个教育层次的全面外联计划。该计划：（1）通过互动式现场演示在他们的教室，专注于热能和相关主题的K-12学生参与。(2)设计了一个实验室模块的胶体纳米粒子合成纳入课程在社区学院的水平。

项目成果

Phase change nanocomposites with tunable melting temperature and thermal energy storage density

• DOI: 10.1039/c3nr02842a
• 发表时间: 2013-01-01
• 期刊: NANOSCALE
• 影响因子: 6.7
• 作者: Liu, Minglu;Wang, Robert Y.
• 通讯作者: Wang, Robert Y.

Far-reaching geometrical artefacts due to thermal decomposition of polymeric coatings around focused ion beam milled pigment particles: FAR REACHING FIB INDUCED ARTEFACTS

由于聚焦离子束研磨颜料颗粒周围的聚合物涂层热分解而产生影响深远的几何伪影：影响深远的 FIB 诱导伪影

• DOI: 10.1111/jmi.12367
• 发表时间: 2016
• 期刊: Journal of Microscopy
• 影响因子: 2
• 作者: RYKACZEWSKI, K.;MIERITZ, D.G.;LIU, M.;MA, Y.;IEZZI, E.B.;SUN, X.;WANG, L.P.;SOLANKI, K.N.;SEO, D.-K.;WANG, R.Y.
• 通讯作者: WANG, R.Y.