자료유형  

 학위논문

Control Number  

0017163059

International Standard Book Number  

9798384024507

Dewey Decimal Classification Number  

540

Main Entry-Personal Name  

Metlay, Amy S.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of Pennsylvania., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

130 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-02, Section: B.

General Note  

Advisor: Mallouk, Thomas E.

Dissertation Note  

Thesis (Ph.D.)--University of Pennsylvania, 2024.

Summary, Etc.  

요약Bipolar Membranes (BPMs) are a promising membrane technology that is currently being integrated into a variety of electrochemical energy conversion and storage devices. The acid-base redox flow battery utilizes a BPM to separate its anolyte and catholyte chambers. In the charged state of the redox flow battery, the anolyte is strongly acidic and the catholyte is strongly basic, adding a cross-membrane potential to the system of ~830 mV. A major benefit of all flow battery technologies is the separation of the reaction volume from the electrolyte tank, enabling individual optimization for capacity and power. However, this architecture results in several components and interactions that must be controlled before critical performance metrics can be met. A fundamental investigation of three such components is the primary topic of this dissertation.Chapter 1 provides a brief review of currently studied BPM devices and systems as well as open questions for research. In chapter 2, the role of graphite oxide as a water dissociation catalyst in BPMs is investigated. The ideal GO catalytic loading density and orientation inside a BPM's interface as well as the movement of ions around individual GO nanosheets is discussed. Chapter 3 focuses on the entirety of the acid-base redox flow battery system, utilizing engineered design of a new three-chamber system to mitigate effects of membrane fouling and strict catholyte restrictions. Chapter 4 presents a study of the fundamental electrochemical processes that occur at a graphitic carbon electrode surface. Chemically functionalized graphitic electrodes with hydrophilic properties display higher values of capacity and faster heterogeneous charge transfer kinetics. Finally, in chapter 5, conclusions and outlooks derived from this dissertation are discussed.A better understanding of these individual components - BPMs, engineered system design, and electrode kinetics - will allow for the optimization of the acid-base redox flow battery as well as the possible integration of fundamental discoveries from this research into other electrochemical systems that utilize at least one of these components.

Subject Added Entry-Topical Term  

Chemistry.

Subject Added Entry-Topical Term  

Physical chemistry.

Subject Added Entry-Topical Term  

Materials science.

Subject Added Entry-Topical Term  

Analytical chemistry.

Index Term-Uncontrolled  

Bipolar Membranes

Index Term-Uncontrolled  

Carbon electrodes

Index Term-Uncontrolled  

Charge transfer kinetics

Index Term-Uncontrolled  

Graphite oxide

Index Term-Uncontrolled  

Redox flow battery

Added Entry-Corporate Name  

University of Pennsylvania Chemistry

Host Item Entry  

Dissertations Abstracts International. 86-02B.

Electronic Location and Access  

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Control Number  

joongbu:657285