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Understanding and Optimizing the Interfacial Mechanisms of Next-Generation Energy Storage and Conversion Materials
Understanding and Optimizing the Interfacial Mechanisms of Next-Generation Energy Storage and Conversion Materials
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105249
- ISBN
- 9798291577905
- DDC
- 540
- 서명/저자
- Understanding and Optimizing the Interfacial Mechanisms of Next-Generation Energy Storage and Conversion Materials
- 발행사항
- [Sl] : University of Illinois at Urbana-Champaign, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 138 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Gewirth, Andrew A.
- 학위논문주기
- Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
- 초록/해제
- 요약The general intent of the work presented in this dissertation is to jointly leverage the capabilities of modern chemical research and characterization methods to advance the development of energy-relevant materials. Of primary focus is the interrogation of the interfacial (electro)chemical mechanisms that underpin the failure modes of next-generation, rechargeable Li metal and S batteries. By making small, but rationally designed alterations to a single component of a battery cell prior to assembly and tracking the cascading effects of these alterations throughout the life of the cell, this research aims to isolate and reveal specific chemical pathways that can be further tuned to achieve the capacity, stability, and longevity demanded of batteries by a world of ever-increasing energy consumption.After introducing the ground principles of current (Li-ion) and future (Li-S) rechargeable battery chemistries in chapter 1, two specific efforts guided by the goals stated above are detailed herein. The first effort, in chapter 2, is centered on the surface modification of Li metal anodes designed for multiple battery chemistries. Following the brief exposure of pristine Li electrodes to two analogous halogenated solvents, high stability is observed in long-term cycling using a previously incompatible electrolyte formulation, and valuable insights about the interplay of electrolyte components and Li surface speciation are established. The second effort, in chapter 3, is centered on S cathodes, specifically targeting the improvement of their electrochemical performance when cycled together with Li metal anodes. Here, the simple addition of two similar heterocyclic electrolyte cosolvents shifts electrolyte properties and solvation dynamics to help mitigate S shuttling and improve capacity retention, rate capability, and activation and utilization of S cathodes.Last, in chapter 4, the scope of this dissertation broadens somewhat. Three examples of the use of advanced characterization methods to inform mechanistic understandings of the operative structural and chemical features at the interfaces of Co-containing O2 reduction catalysts, bimetallic Cu-alloy NO3- reduction catalysts, and Co-decorated catalytic host materials for S cathodes in Na-S batteries are described. The two techniques of interest, TEM and XPS, elucidate nanoscale morphological differences, surface-localized oxidation discrepancies, and both compositional and microstructural transformations.
- 일반주제명
- Chemistry
- 일반주제명
- Inorganic chemistry
- 일반주제명
- Analytical chemistry
- 일반주제명
- Materials science
- 일반주제명
- Energy
- 키워드
- Lithium
- 키워드
- Sulfur
- 키워드
- Batteries
- 키워드
- Electrolyte
- 키워드
- Characterization
- 키워드
- Electrochemistry
- 기타저자
- University of Illinois at Urbana-Champaign Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■040 ▼aMiAaPQ▼cMiAaPQ
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■1001 ▼aThornburg, Eric Scott.
■24510▼aUnderstanding and Optimizing the Interfacial Mechanisms of Next-Generation Energy Storage and Conversion Materials
■260 ▼a[Sl]▼bUniversity of Illinois at Urbana-Champaign▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a138 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Gewirth, Andrew A.
■5021 ▼aThesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2023.
■520 ▼aThe general intent of the work presented in this dissertation is to jointly leverage the capabilities of modern chemical research and characterization methods to advance the development of energy-relevant materials. Of primary focus is the interrogation of the interfacial (electro)chemical mechanisms that underpin the failure modes of next-generation, rechargeable Li metal and S batteries. By making small, but rationally designed alterations to a single component of a battery cell prior to assembly and tracking the cascading effects of these alterations throughout the life of the cell, this research aims to isolate and reveal specific chemical pathways that can be further tuned to achieve the capacity, stability, and longevity demanded of batteries by a world of ever-increasing energy consumption.After introducing the ground principles of current (Li-ion) and future (Li-S) rechargeable battery chemistries in chapter 1, two specific efforts guided by the goals stated above are detailed herein. The first effort, in chapter 2, is centered on the surface modification of Li metal anodes designed for multiple battery chemistries. Following the brief exposure of pristine Li electrodes to two analogous halogenated solvents, high stability is observed in long-term cycling using a previously incompatible electrolyte formulation, and valuable insights about the interplay of electrolyte components and Li surface speciation are established. The second effort, in chapter 3, is centered on S cathodes, specifically targeting the improvement of their electrochemical performance when cycled together with Li metal anodes. Here, the simple addition of two similar heterocyclic electrolyte cosolvents shifts electrolyte properties and solvation dynamics to help mitigate S shuttling and improve capacity retention, rate capability, and activation and utilization of S cathodes.Last, in chapter 4, the scope of this dissertation broadens somewhat. Three examples of the use of advanced characterization methods to inform mechanistic understandings of the operative structural and chemical features at the interfaces of Co-containing O2 reduction catalysts, bimetallic Cu-alloy NO3- reduction catalysts, and Co-decorated catalytic host materials for S cathodes in Na-S batteries are described. The two techniques of interest, TEM and XPS, elucidate nanoscale morphological differences, surface-localized oxidation discrepancies, and both compositional and microstructural transformations.
■590 ▼aSchool code: 0090.
■650 4▼aChemistry
■650 4▼aInorganic chemistry
■650 4▼aAnalytical chemistry
■650 4▼aMaterials science
■650 4▼aEnergy
■653 ▼aLithium
■653 ▼aSulfur
■653 ▼aBatteries
■653 ▼aElectrolyte
■653 ▼aCharacterization
■653 ▼aElectrochemistry
■690 ▼a0485
■690 ▼a0488
■690 ▼a0486
■690 ▼a0794
■690 ▼a0791
■71020▼aUniversity of Illinois at Urbana-Champaign▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0090
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360002▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
