Synthesis and Processing of Electroactive Polymers in Nanostructured Energy Devices

纳米结构能源器件中电活性聚合物的合成和加工

• 批准号: 1264487
• 负责人: Kenneth Lau
• 金额: $ 22.35万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1264487&HistoricalAwards=false
• 关键词: Synthesis; Processing; Electroactive; Polymers; Nanostructured

PI: Lau, Kenneth K.S.Institutions: Drexel UniversityProposal Number: 1264487Title: Synthesis and Processing of Electroactive Polymers in Nanostructured Energy DevicesEnergy storage is a key component in the energy conservation equation, especially when consideringsustainable energies like solar and wind, which are more variable and intermittent in nature depending onthe time of day, season of the year, and geographical location. Similarly, the ability to store energy anduse it when demanded will provide a more seamless operation of electric vehicles whether duringacceleration/deceleration or in cruise mode. Among different energy storage technologies, supercapacitorsor electrochemical capacitors are emerging as an attractive option for delivering much higher power (rateof energy transfer) than alternative options like the lithium ion battery.Intellectual Merit Supercapacitors that store charge through electrochemical double layers possess higher power density butlack sufficient energy density. By incorporating electroactive polymers, which undergo relatively fastredox reactions, further pseudocapacitance can be added to enhance energy density. However, as thesupercapacitor electrodes are typically highly porous nanostructures, there remains significant synthesisand processing challenges in adding the electroactive polymers onto the surfaces of pores inside thesenanostructures without sacrificing surface area or pore access. The PI plans an oxidativechemical vapor deposition (oCVD) approach that will address many of the challenges by enabling theconformal, uniform growth of thin films of electroactive polymers inside porous nanostructured materials.The central hypothesis is that the liquid-free, vapor-to-solid polymerization reactions will lead to surfaceconfined polymer growth and ultrathin films that do not significantly alter the underlying pore structurewhile adding appreciable pseudocapacitance. This work will involve (1) synthesis ofelectroactive polymer thin films in porous nanostructures, (2) understanding the effect of processing onpolymer structure and properties, and (3) assembly and electrochemical analysis of pseudocapacitors thatmake use of oCVD to incorporate the electroactive polymers.Broader Impact This work is expected to deliver enhanced supercapacitors with significantlyhigher specific capacitance, energy density, power density and cycle stability, making them viable for usein electric and hybrid vehicles as well as in the development of greener energy systems that include solarcells and fuel cells. Fundamentally, the work is expected to provide an effective synthesis andprocessing methodology for conformally coating porous nanostructures that will have broader utility inother nanoscale devices, including electronics, sensors, solar cells, fuel cells, transistors and organic light-emitting diodes (OLEDs). Integrated with the research is an education program, which aims to train graduate and undergraduatestudents as well as to engage high school students in polymers for energy. Minority and underrepresentedstudents will be actively recruited to participate in the project. In addition, outreach will bemade to schools in Philadelphia and inner city Camden, NJ to promote STEM involvement and learningearly on.

PI: Lau, Kenneth K.S.Institutions: Drexel UniversityProposal Number: 1264487Title: Synthesis and Processing of Electroactive Polymers in Nanostructured Energy DevicesEnergy storage is a key component in the energy conservation equation, especially when consideringsustainable energies like solar and wind, which are more variable and intermittent in nature depending onthe time of day, season of the year, and地理位置。同样，在需要时储存能源并使用能量的能力将提供更无缝的电动汽车操作，无论是在速度/减速时还是在巡航模式下。在不同的储能技术中，超级电容器电化学电容器与锂离子电池（例如锂离子电池电池）相比，具有更高的功率（速率能量传递）的吸引人选择。Introctual功绩超级电容器。通过电化学双层层来存储电荷的超级电容器具有更高的电力密度，但具有更高的能量能量。通过合并经历相对fastredox反应的电活性聚合物，可以添加进一步的伪电容以增强能量密度。然而，由于抑制剂电极电极通常是高度多孔的纳米结构，因此在不牺牲表面积或孔隙访问的情况下，将电活性聚合物添加到其内部孔内孔的毛孔表面时仍存在重大的合成和处理挑战。 PI计划采用氧化技术蒸气沉积（OCVD）方法，该方法将通过实现多孔纳米结构材料内的电活性聚合物薄膜的稳定形式，均匀的薄膜来应对许多挑战。中心假设是，无液体对液体蒸发到蒸气到液体的效果反应，并导致旋转的多触及型甲壳度均匀的效果，远程构成了远程的甲壳部均匀效果，而远程构成了远程的效果。孔结构的基础结构增加了可观的伪电容。这项工作将涉及（1）在多孔纳米结构中的合成聚合物薄膜的合成，（2）理解处理上的聚合物结构和特性的效果，以及（3）组装和电化学分析对假能力的拟合ocvd的使用，以使ocvd的使用来融合了这一特定的影响。电容，能量密度，功率密度和循环稳定性，使其可用于使用电动和混合动力汽车以及包括太阳能和燃料电池在内的绿色能源系统的开发。从根本上讲，这项工作有望为共同涂层多孔纳米结构提供有效的合成和处理方法，这些方法将在其他纳米级设备中具有更广泛的效用，包括电子，传感器，太阳能电池，燃料电池，燃料电池，晶体管和有机光发射二极管（OLEDS）。与该研究集成的是一项教育计划，该计划旨在培训毕业生和本科生，并吸引高中生参与聚合物的能量。将积极招募少数民族和代表性不足的学生参加该项目。此外，外展将对费城和新泽西州内市卡姆登市的学校感到震惊，以促进STEM的参与和学习。