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Design of Polymer Electrodes for Energy Storage Systems.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Design of Polymer Electrodes for Energy Storage Systems./
作者:	McAllister, Bryony Taylor.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	182 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-01, Section: B.
Contained By:	Dissertations Abstracts International83-01B.
標題:	Chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28262420
ISBN:	9798522943073

Design of Polymer Electrodes for Energy Storage Systems.
McAllister, Bryony Taylor.

Design of Polymer Electrodes for Energy Storage Systems. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 182 p.

Source: Dissertations Abstracts International, Volume: 83-01, Section: B.

Thesis (Ph.D.)--University of Toronto (Canada), 2021.

This item must not be sold to any third party vendors.

The 21st century has been marked by an exponential increase in new and interconnected technologies and an awareness of the pressing need to decarbonize our energy supply. As a consequence, the demand for higher performing, versatile and environmentally benign energy storage has skyrocketed. Organic electrode materials are attractive candidates to address these needs because they are inexpensive, abundant, adaptable to different form factors, and their properties can be tuned at the molecular level by synthetic modification. Organic energy storage research has experienced a resurgence in the last decade, however many challenges must be overcome to achieve commercialization. In this thesis, I present the design of new organic polymers for energy storage systems that address specific challenges of organic electrodes. In Chapters 2 and 3, I leverage the advantageous properties of pyrene, namely surface area, electron transport and stability, to design conjugated polymers for supercapacitors and lithium-ion batteries. Chapter 2 explores a pyrene-fused thienopyrazine polymer as an n-type supercapacitor electrode. The extended conjugation afforded by pyrene results in good cycling stability relative to literature examples, and the material design provides a platform for further improvements in stability. In Chapter 3, I design a pyrene-fused azaacene polymer anode and investigate its mechanism of superlithiation and activation. I demonstrate the highest capacity for a linear polymer anode to date, attributed to high stability and extended conjugation. Analysis of the cycled electrodes indicates a deformation-based mechanism of activation, whereby cycling results in increased order and sp2 character within the electrode. Importantly, the electrodes maintain their high capacity across a ten-fold increase in rate, suggesting that high capacity superlithiation anodes will be achievable at practical rates.In Chapter 4, I describe synthetic strategies to develop norbornene-based pendant polymers for lithium-ion batteries. The chapter is divided into two sections, that each detail multiple generations of polymers that leverage the versatility of norbornene to achieve high capacity, high voltage or high rate capability. Synthetic design and future applications are discussed in detail.Lastly, Chapter 5 summarizes potential extensions of the above projects and provides an overview of the remaining challenges in the organic energy storage field.

ISBN: 9798522943073Subjects--Topical Terms:

516420
Chemistry.
Subjects--Index Terms:

Electrochemistry

Design of Polymer Electrodes for Energy Storage Systems.
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300 $a 182 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-01, Section: B.
500 $a Advisor: Seferos, Dwight S.
502 $a Thesis (Ph.D.)--University of Toronto (Canada), 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The 21st century has been marked by an exponential increase in new and interconnected technologies and an awareness of the pressing need to decarbonize our energy supply. As a consequence, the demand for higher performing, versatile and environmentally benign energy storage has skyrocketed. Organic electrode materials are attractive candidates to address these needs because they are inexpensive, abundant, adaptable to different form factors, and their properties can be tuned at the molecular level by synthetic modification. Organic energy storage research has experienced a resurgence in the last decade, however many challenges must be overcome to achieve commercialization. In this thesis, I present the design of new organic polymers for energy storage systems that address specific challenges of organic electrodes. In Chapters 2 and 3, I leverage the advantageous properties of pyrene, namely surface area, electron transport and stability, to design conjugated polymers for supercapacitors and lithium-ion batteries. Chapter 2 explores a pyrene-fused thienopyrazine polymer as an n-type supercapacitor electrode. The extended conjugation afforded by pyrene results in good cycling stability relative to literature examples, and the material design provides a platform for further improvements in stability. In Chapter 3, I design a pyrene-fused azaacene polymer anode and investigate its mechanism of superlithiation and activation. I demonstrate the highest capacity for a linear polymer anode to date, attributed to high stability and extended conjugation. Analysis of the cycled electrodes indicates a deformation-based mechanism of activation, whereby cycling results in increased order and sp2 character within the electrode. Importantly, the electrodes maintain their high capacity across a ten-fold increase in rate, suggesting that high capacity superlithiation anodes will be achievable at practical rates.In Chapter 4, I describe synthetic strategies to develop norbornene-based pendant polymers for lithium-ion batteries. The chapter is divided into two sections, that each detail multiple generations of polymers that leverage the versatility of norbornene to achieve high capacity, high voltage or high rate capability. Synthetic design and future applications are discussed in detail.Lastly, Chapter 5 summarizes potential extensions of the above projects and provides an overview of the remaining challenges in the organic energy storage field.
590 $a School code: 0779.
650 4 $a Chemistry. $3 516420
650 4 $a Polymer chemistry. $3 3173488
650 4 $a Energy. $3 876794
650 4 $a Electrical engineering. $3 649834
650 4 $a Chemical engineering. $3 560457
650 4 $a Principles. $3 3559989
650 4 $a Electrodes. $3 629151
650 4 $a Nuclear magnetic resonance--NMR. $3 3560258
650 4 $a Electric vehicles. $3 1613392
650 4 $a Polymerization. $3 560492
650 4 $a Polymer films. $3 3683829
650 4 $a Scientific imaging. $3 3560377
650 4 $a Chromatography. $3 1073639
650 4 $a Potassium. $3 3562093
650 4 $a Lithium. $3 1638490
650 4 $a Scanning electron microscopy. $3 551366
650 4 $a Efficiency. $3 753744
650 4 $a Nitrogen. $3 1314426
650 4 $a Crystal structure. $3 3561040
650 4 $a Polymers. $3 535398
650 4 $a Mass spectrometry. $3 551172
650 4 $a Electrolytes. $3 656992
650 4 $a Fourier transforms. $3 3545926
650 4 $a Sodium. $3 3562677
650 4 $a Carbon. $3 604057
650 4 $a Copyright. $3 601694
650 4 $a Molecular weight. $3 3683783
650 4 $a Morphology. $3 591167
653 $a Electrochemistry
653 $a Energy Storage
653 $a Lithium-ion Batteries
653 $a Pendant Polymers
653 $a Polymer Chemistry
653 $a Supercapacitors
690 $a 0485
690 $a 0495
690 $a 0544
690 $a 0542
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690 $a 0287
710 2 $a University of Toronto (Canada). $b Chemistry. $3 3178441
773 0 $t Dissertations Abstracts International $g 83-01B.
790 $a 0779
791 $a Ph.D.
792 $a 2021
793 $a English
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