Tuning the Frequency Response of Fractional-Order Microsupercapacitors

调整分数阶微型超级电容器的频率响应

• 批准号: 2126190
• 负责人: Chunlei Wang
• 金额: $ 37.92万
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2126190&HistoricalAwards=false
• 关键词: Tuning; Frequency; Response; Fractional; Order

Electric double-layer capacitors (EDLC) are a subset of electrochemical capacitors that can store and deliver electrical energy at dc and relatively far-from-dc frequencies with effective capacitance between that of aluminum electrolytic capacitors and secondary batteries. They are mostly employed in conventional energy storage applications as secondary power source, such as microprocessors and solar batteries. They have also been demonstrated as efficient energy devices in oscillators and filters circuits, fractional-order controllers, and fractional-order resonators. However, because of the nature and porous structure of their electrodes and the interfacial electrochemistry of their electrodes/electrolyte phase, many fundamental aspects of their performance metrics are still not well understood, and rational design is practically nonexistent. In particular, EDLCs exhibit a dissipative, resistive-capacitive behavior when operating away from dc with an impedance angle anywhere between -90 and 0 deg. In this project, miniaturized EDLCs based on structured 2D and 3D electrode arrays will be designed and fabricated with the objective of understanding and controlling their non-ideal, fractional-order behavior. We will develop and study the effect of doped electrolytes in order to tune the electric-field-induced ionic transport in the presence of physical obstacles. The expected outcome is a general procedure and design rules to apply in order to fine-tune and control the impedance phase shift of EDLCs and their energy-power performance. Modeling and simulation using mean-field Poisson-Nernst-Plank model will be carried out in order to provide a fundamental understanding of the frequency response of the devices. System-level modeling using fractional-order mathematical tools and equivalent circuit models will also be developed in connection with RC-based circuitry. The controllable fractional-order behavior of the EDLCs will be verified and their frequency-domain application will be demonstrated. This project will contribute to the research, education, and diversity goals of Florida International University.The objectives of this project are to tackle the lack of knowledge on the frequency-domain metrics and performance of factional-order capacitors using both experimental and modeling approaches. We aim to investigate the following: (1) electrode-electrolyte interface specifications and electrolyte parameters that enable the tuning of the electrical characteristics of an EDLC over an extended frequency bandwidth; (2) the electro-kinetic effects taking place in the supporting electrolyte of an EDLC, and how they affect the frequency-domain metrics of the device; (3) modeling using 3D-circuit interconnects and finite-element methods to understand the overall electric characteristics; and (4) the frequency response of the EDLCs and their application in (frequency-domain) filtering and (time-domain) memory applications.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.

双电层电容器 (EDLC) 是电化学电容器的一个子集，可以在直流和相对远离直流的频率下存储和传输电能，其有效电容介于铝电解电容器和二次电池之间。它们主要用于传统的储能应用作为二次电源，例如微处理器和太阳能电池。它们还被证明是振荡器和滤波器电路、分数阶控制器和分数阶谐振器中的高效能源器件。然而，由于其电极的性质和多孔结构以及电极/电解质相的界面电化学，其性能指标的许多基本方面仍然没有得到很好的理解，并且实际上不存在合理的设计。特别是，当阻抗角在 -90 到 0 度之间的任何地方、远离直流电运行时，EDLC 都会表现出耗散、阻容行为。在该项目中，将设计和制造基于结构化 2D 和 3D 电极阵列的小型化 EDLC，目的是了解和控制其非理想分数阶行为。我们将开发和研究掺杂电解质的效果，以便在存在物理障碍的情况下调整电场诱导的离子传输。预期结果是一个通用程序和设计规则，用于微调和控制 EDLC 的阻抗相移及其能量功率性能。将使用平均场泊松-能斯特-普朗克模型进行建模和仿真，以便对器件的频率响应有一个基本的了解。使用分数阶数学工具和等效电路模型的系统级建模也将结合基于 RC 的电路进行开发。 EDLC 的可控分数阶行为将得到验证，并展示其频域应用。该项目将为佛罗里达国际大学的研究、教育和多样性目标做出贡献。该项目的目标是使用实验和建模方法来解决频域指标和派阶电容器性能知识的缺乏。我们的目标是研究以下内容：(1) 电极-电解质界面规格和电解质参数，使 EDLC 的电气特性能够在扩展的频率带宽上进行调整； (2) EDLC 支持电解质中发生的电动效应，以及它们如何影响器件的频域指标； (3) 使用 3D 电路互连和有限元方法进行建模，以了解整体电气特性； (4) EDLC 的频率响应及其在（频域）滤波和（时域）存储器应用中的应用。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优点和技术进行评估，认为值得支持。更广泛的影响审查标准。

项目成果

Sacrificial template method to fabricate highly sensitive porous capacitive pressure sensor for full pulse waveforms detection

• DOI: 10.1117/12.2665344
• 发表时间: 2022-10
• 作者: A. Chowdhury;Borzooye Jafarizadeh;N. Pala;Chunlei Wang

Monitoring and analysis of cardiovascular pulse waveforms using flexible capacitive and piezoresistive pressure sensors and machine learning perspective

• DOI: 10.1016/j.bios.2023.115449
• 发表时间: 2023-06-23
• 期刊: BIOSENSORS & BIOELECTRONICS
• 影响因子: 12.6
• 作者: Chowdhury, Azmal Huda;Jafarizadeh, Borzooye;Wang, Chunlei
• 通讯作者: Wang, Chunlei

Time-Domain and Frequency-Domain Mappings of Voltage-to-Charge and Charge-to-Voltage in Capacitive Devices

• DOI: 10.1109/tcsii.2022.3174965
• 发表时间: 2022-03
• 期刊: IEEE Transactions on Circuits and Systems II: Express Briefs
• 作者: A. Allagui;A. Elwakil;Chunlei Wang

Deformed Butler–Volmer Models for Convex Semilogarithmic Current-Overpotential Profiles of Li-ion Batteries

• DOI: 10.1021/acs.jpcc.1c09620
• 发表时间: 2022-01
• 期刊: The Journal of Physical Chemistry C
• 作者: A. Allagui;Hachemi B. Benaoum;Chunlei Wang

Defects investigation of bipolar exfoliated phosphorene nanosheets

• DOI: 10.1016/j.susc.2022.122052
• 发表时间: 2022-02-19
• 期刊: SURFACE SCIENCE
• 影响因子: 1.9
• 作者: Baboukani, Amin Rabiei;Aghaei, Sadegh Mehdi;Wang, Chunlei
• 通讯作者: Wang, Chunlei