CAREER: Manufacturing Semiconducting Nanoparticles at the Aerosol/Vapor-Phase Interface

职业：在气溶胶/气相界面制造半导体纳米粒子

• 批准号: 2144977
• 负责人: Julio D'Arcy
• 金额: $ 50万
• 依托单位: Clark University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2027-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2144977&HistoricalAwards=false
• 关键词: CAREER; Manufacturing; Semiconducting; Nanoparticles; Aerosol

Robust energy storage is critical for our nation’s future. Manufacturing semiconductor nanomaterials for energy storage possessing high electronic conductivity and high energy storage capacity could translate into batteries possessing larger “fuel tanks” and is critical to the US economy. The current state-of-the-art in manufacturing of organic nanoparticles for energy storage applications produces particles of low electronic conductivity resulting in poor energy storage performance. Among nanomaterials, organic semiconducting nanoparticles are especially attractive for batteries due to solution processing properties that enable cost-effective implementation of these particles. This Faculty Early Career Development (CAREER) award supports fundamental research seeking to enable scalable production of organic nanoparticles using an aerosol process through investigation of the interplay of aerosol formation and vapor phase chemistry. This research will determine the combined transport and chemical kinetics needed to control the synthetic pathways for the manufacturing of highly conductive particles in aerosol-based synthesis with controlled composition and size. The successful development of these new synthetic pathways would impact energy storage technologies by lowering costs for energy storage in devices and enabling development of light-weight batteries for transportation applications. The integrated educational program will contribute to the training of underrepresented high school, undergraduate and graduate students for careers in science, engineering, mathematics, and technology by leading project-based workshops that study aerosol science.Manufacturing the next generation of active materials for batteries will require developing synthetic technologies competitive in an economy of scale. There is a lack of knowledge regarding molecular variables and experimental conditions that promote reactivity between aerosols of water droplets and vapors of organic molecules undergoing oxidative radical polymerization. This research aims to discover molecular correlations that enable control of polymerization kinetics and reaction mechanisms by investigating production and desiccation of water droplet aerosols with concomitant vapor-based polymerization within a flow reactor. Data produced by this research will inform manufacturing protocols that lead to kilogram-per-day production of organic semiconducting nanoparticles. This project will investigate organic-inorganic nanoparticle composites using Fe2O3, V2O5, Nb2O5, and MnO2 to produce particles characterized by intimate electronic contact between organic and inorganic components. This research aims to: 1) achieve mechanistic understanding at the aerosol water droplet/vapor interface to pinpoint steady-state polymerization kinetics responsible for high electronic conductivity, 2) investigate residence time of suspended aerosols of water droplets under reaction conditions to design nanoparticles possessing long conjugation length and high crystallinity, and 3) probe synthetic conditions that tailor mass transport of reactant vapors to trigger rapid polymerization and high throughput batch processing.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

强大的能源储存对我们国家的未来至关重要。制造具有高电子传导性和高储能容量的储能半导体纳米材料可以转化为拥有更大“油箱”的电池，对美国经济至关重要。用于能量存储应用的有机纳米颗粒的制造的当前技术水平产生低电子电导率的颗粒，导致差的能量存储性能。在纳米材料中，有机半导体纳米颗粒对于电池特别有吸引力，这是由于溶液加工特性使得这些颗粒能够具有成本效益。该学院早期职业发展（CAREER）奖支持基础研究，旨在通过调查气溶胶形成和气相化学的相互作用，使用气溶胶过程实现有机纳米颗粒的可规模生产。这项研究将确定控制合成途径所需的综合运输和化学动力学，以在基于气溶胶的合成中制造具有受控成分和尺寸的高导电颗粒。这些新合成途径的成功开发将通过降低设备储能成本和开发用于运输应用的轻质电池来影响储能技术。综合教育计划将通过领导研究气溶胶科学的基于项目的研讨会，为代表性不足的高中生、本科生和研究生提供科学、工程、数学和技术方面的职业培训。制造下一代电池活性材料将需要开发具有规模经济竞争力的合成技术。缺乏关于促进水滴气溶胶和经历氧化自由基聚合的有机分子蒸气之间的反应性的分子变量和实验条件的知识。本研究的目的是发现分子的相关性，使控制聚合动力学和反应机制，通过调查生产和干燥的水滴气溶胶伴随蒸汽为基础的聚合流动反应器内。这项研究产生的数据将为每天生产一千克有机半导体纳米颗粒的制造协议提供信息。本项目将研究使用Fe 2 O3，V2 O 5，Nb 2 O 5和MnO 2的有机-无机纳米颗粒复合材料，以产生具有有机和无机成分之间紧密电子接触特征的颗粒。这项研究旨在：1）在气溶胶水滴/蒸汽界面处实现机理理解，以精确定位导致高电子电导率的稳态聚合动力学，2）研究水滴的悬浮气溶胶在反应条件下的停留时间，以设计具有长共轭长度和高结晶度的纳米颗粒，和3）探测合成条件，调整反应物蒸汽的质量传输，以触发快速聚合和高通量批量处理。该奖项反映了NSF的法定使命，并被认为是值得的通过使用基金会的知识价值和更广泛的影响审查标准进行评估，

项目成果

Converting Iron Corrosion Product to Nanostructured Conducting Polymers: Synthetic Strategies and Applications

• DOI: 10.1021/accountsmr.3c00031
• 发表时间: 2023-06
• 期刊: Accounts of Materials Research
• 影响因子: 14.6
• 作者: Yifan Diao;Haoru Yang;Yang Lu;Hongmin Wang;Reagan Woon;Alina Chow;Chiemela Izima;Brandon Chow;Julio M. D’Arcy