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Synthesis of quinone-based porous organic polymers and their usage in aqueous zinc-ion batteries
Title:
Synthesis of quinone-based porous organic polymers and their usage in aqueous zinc-ion batteries
Author:
Erözen, Yaren Naz, author.
Personal Author:
Physical Description:
xii, 41 leaves: charts;+ 1 computer laser optical disc.
Abstract:
Aqueous zinc-ion batteries (AZIBs) have great potential to gain a place in energy storage. Their high energy density, safety, cost-effectiveness, and natural abundance of zinc metal are why they are considered a promising battery technology over other metalion batteries. Designing high-performance cathode materials is the main challenge of AZIBs for large-scale applications. Porous organic polymers (POPs) are the newly developing cathode materials for AZIBs due to their high surface area, tunable pore structure, and functionalization. In this study, different quinone-functionalized redoxactive organic polymers were designed and synthesized to examine their electrochemical properties in AZIBs. The main purpose of this study is to investigate the effect of the redox-active pendant group (quinone for this work) positions on the electrochemical performance. Two redox-active polymers were synthesized in this context, and quinone groups were placed in para (p-rPOP) and ortho (o-rPOP) positions. Polymers were characterized, and electrochemical tests were performed. Cyclic voltammetry (CV) tests were collected at different scan rates for both polymers to prove the reversibility of Zn2+ ion insertion. Galvanostatic charge/discharge curves gave information about the charge storage capacity of redox-active organic.polymers. However, both polymers showed low electrochemical performance as cathode materials in AZIBs. o-rPOP and p-rPOP revealed the discharge capacity of 1.2 mAh g-1 and 1.7 mAh g-1 at a current density of 0.1 A g-1, respectively. These findings suggest that these polymers may not be suitable for use as cathodes in aqueous zinc-ion batteries. Therefore, it is planned to test them in different organic metal-ion batteries in future studies.
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Thesis (Master)--İzmir Institute of Technology:Chemistry.

İzmir Institute of Technology:Chemistry--Thesis (Master).
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