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Investigating the Energy Storage Capabilities and Thermal Conductivities of Covalent Organic Frameworks

Moscarello, Erica Mary Nora
http://orcid.org/0000-0002-3878-7860
http://rave.ohiolink.edu/etdc/view?acc_num=osu1649952683630708

Abstract Details

2022, Doctor of Philosophy, Ohio State University, Chemistry.
Covalent organic frameworks (COFs) are an emerging class of crystalline porous organic polymers composed of light elements (C, H, N, O, and B) connected through strong covalent bonds. The design and syntheses of COFs primarily relies on the principles of dynamic covalent chemistry in conjunction with non-covalent interactions. COF structures are often accessed via the utilization of reversible bond-forming reactions under reaction conditions that promote this reversibility to achieve porous, ordered materials that can be characterized as having high surface areas, permanent porosities, low densities, and high chemical and thermal stabilities. One of the prominent advantages of COFs is their modular nature. Through reticular chemistry, careful structure design, and choice of building units can allow for the fabrication of materials suited for specific applications. These principles have been employed to tune the stability, crystallinity, and properties of different materials.COFs also possess a high degree of π-conjugation and are insoluble in most common organic solvents. These attractive assets have made COFs of great interest in a range of applications and fields including chemical sensing, energy storage, catalysis, and gas capture and storage. This research will focus on the design of COFs for use as organic anode materials in potassium ion batteries as well as the investigation of their thermal conductivities. There is currently growing interest in the development of organic electrode materials for energy storage devices due to their sustainability and low costs. Currently, the industry standard anode material is graphite, a material that has yet to reach its theoretical potential. In efforts to synthesize a layered material with properties similar to the carbon allotrope, graphyne, two alkynyl-containing COFs were investigated as potential organic anode materials in potassium ion batteries; TAEB-COF and DBA-COF 3. After 300 cycles at a current density of 50 mA g-1 reversible capacities of 254 and 76.3 mA h g-1 were achieved for TAEB-COF and DBA-COF 3, respectively. This work highlights the advantages of the use of COF systems with accessible alkynyl functionalities for energy storage devices. In comparison to the wide range of applications COFs have been investigated for, their physical properties such as thermal conductivity are drastically understudied. Understanding the heat transfer and thermal management properties of COFs is of immense importance for their potential use in certain applications, especially in those in which thermal stress plays a role. The thermal conductivities of a series of benzobisoxazole-linked COFs were measured from 80 – 300 K utilizing the longitudinal steady-state heat flow method, achieving values up to ~ 0.7 W m-1 K-1 at 300 K. These materials can potentially be used as ultra-low-k dielectric materials.
Psaras McGrier (Advisor)
Jovica Badjic (Committee Member)
Jon Parquette (Committee Member)
182 p.
Chemistry
covalent organic frameworks; energy storage; potassium-ion batteries; thermal conductivity; organic-based anode materials; longitudinal steady-state heat flow method

Recommended Citations

Citations

  • Moscarello, E. M. N. (2022). Investigating the Energy Storage Capabilities and Thermal Conductivities of Covalent Organic Frameworks [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1649952683630708

    APA Style (7th edition)

  • Moscarello, Erica. Investigating the Energy Storage Capabilities and Thermal Conductivities of Covalent Organic Frameworks. 2022. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1649952683630708.

    MLA Style (8th edition)

  • Moscarello, Erica. "Investigating the Energy Storage Capabilities and Thermal Conductivities of Covalent Organic Frameworks." Doctoral dissertation, Ohio State University, 2022. http://rave.ohiolink.edu/etdc/view?acc_num=osu1649952683630708

    Chicago Manual of Style (17th edition)

osu1649952683630708
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This open access ETD is published by The Ohio State University and OhioLINK.