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Investigation on Electrodeposition of Metals and Alloys with Advanced Characterizations
Investigation on Electrodeposition of Metals and Alloys with Advanced Characterizations
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105420
- ISBN
- 9798263325633
- DDC
- 600
- 저자명
- Ma, Yifan.
- 서명/저자
- Investigation on Electrodeposition of Metals and Alloys with Advanced Characterizations
- 발행사항
- [Sl] : Georgia Institute of Technology, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 117 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
- 주기사항
- Advisor: Chen, Hailong.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
- 초록/해제
- 요약Electrodeposition is a widely used manufacturing technology in industry due to its simplicity, low-cost and scalability for practical applications. In electrodeposition, the composition and morphology of yielded materials can be tuned by adjusting electrochemical parameters and electrolyte compositions. Historically the development and modification of electrodeposition recipes are mostly based on trial-and-error tests and postmortem analyses.To reveal the insights of electrodeposition and develop rational design strategies, we designed an in situ XRD tools for electrodeposition, which allows for systematic investigation to reveal how deposition conditions impact the chemical/phase composition and morphology. Cu-Zn alloy was first electrodeposited under different conditions to obtain desired compositions and morphology. Then Zn was electrochemically etched from Cu-Zn alloy to form 3D Cu as current collectors for Li-metal batteries. The developed electrodeposition and dealloying method is facile and scalable to fabricate 3D porous Cu structure with both high thickness and porosity. The synthesized 3D Cu current collector can achieve Li storage areal capacity of 10 mAh/cm2 without Li dendrite growth and deliver stable cycling performance. The in situ XRD patterns were collected during the electrodeposition and dealloying process of Cu-Zn alloy to understand its phase growth/transformation. To further understand phase evolution pathway, we developed a quantification method by integrating Bragg reflections from different phases to study how different phases grow/transform as a function of time. It was found that during dealloying process, the electrodeposited CuZn5 alloy first transformed to Cu5Zn8 phase and then transformed to pure Cu phase. The developed in situ XRD tool with quantification method provides us a deeper understanding of electrodeposition and dealloying process.In the previous work, a porous 3D Cu current collector was developed to suppress Li dendrite growth and enable stable Li anode cycling performance. Recent findings of different Li affinity on different Cu facets inspired us to synthesize Cu films with different texture and investigate Li plating behavior on different Cu exposing surfaces. By tuning different current densities and with using NaCl as additive, Cu films with different textures were successfully synthesized. In situ XRD data were collected and quantitatively analyzed to calculate the Relative Texture Coefficients (RTCs), which helps in understanding the formation of textures under various electrodeposition conditions. It was found NaCl additive and current density/voltage could sufficiently influence the texture of deposited Cu film. Cu film with a strong (220) texture were fabricated with 1 mM NaCl additive at a current density of 90 mA/cm2. As the current densities decrease, the texture intensity weakens.The aforementioned in situ XRD tool provided detailed insights into material synthesis process. To better utilize the synchrotron X-ray sources and improve materials synthesis and screening efficiency, a high throughput in situ X-ray diffraction characterization platform is developed to provide capability for the design and screening of complex alloys under different electrochemical deposition/ dealloying conditions. The high throughput in situ XRD platform was realized by a gradient cell design. The counter electrode is placed by one side of the working electrode/substrate, thus enabling ununiform current density on the substrate. To determine the distribution of current density on the substrate, single metal Cu was deposited using the gradient cell setup. The current density distribution was determined by the Cu phase growth rate at different locations on the substrate.
- 일반주제명
- Metals
- 일반주제명
- Electrolytes
- 일반주제명
- Investigations
- 일반주제명
- Electrodes
- 일반주제명
- Spectrum analysis
- 일반주제명
- Electron microscopes
- 일반주제명
- Plating
- 일반주제명
- Design
- 일반주제명
- Batteries
- 일반주제명
- Energy storage
- 일반주제명
- Alloys
- 일반주제명
- Lithium
- 일반주제명
- Radiation
- 일반주제명
- X-rays
- 일반주제명
- Composite materials
- 일반주제명
- Analytical chemistry
- 일반주제명
- Materials science
- 일반주제명
- Optics
- 기본자료저록
- Dissertations Abstracts International. 87-05A.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798263325633
■035 ▼a(MiAaPQ)AAI32307931
■035 ▼a(MiAaPQ)GeorgiaTech78534
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a600
■1001 ▼aMa, Yifan.
■24510▼aInvestigation on Electrodeposition of Metals and Alloys with Advanced Characterizations
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a117 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: A.
■500 ▼aAdvisor: Chen, Hailong.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2024.
■520 ▼aElectrodeposition is a widely used manufacturing technology in industry due to its simplicity, low-cost and scalability for practical applications. In electrodeposition, the composition and morphology of yielded materials can be tuned by adjusting electrochemical parameters and electrolyte compositions. Historically the development and modification of electrodeposition recipes are mostly based on trial-and-error tests and postmortem analyses.To reveal the insights of electrodeposition and develop rational design strategies, we designed an in situ XRD tools for electrodeposition, which allows for systematic investigation to reveal how deposition conditions impact the chemical/phase composition and morphology. Cu-Zn alloy was first electrodeposited under different conditions to obtain desired compositions and morphology. Then Zn was electrochemically etched from Cu-Zn alloy to form 3D Cu as current collectors for Li-metal batteries. The developed electrodeposition and dealloying method is facile and scalable to fabricate 3D porous Cu structure with both high thickness and porosity. The synthesized 3D Cu current collector can achieve Li storage areal capacity of 10 mAh/cm2 without Li dendrite growth and deliver stable cycling performance. The in situ XRD patterns were collected during the electrodeposition and dealloying process of Cu-Zn alloy to understand its phase growth/transformation. To further understand phase evolution pathway, we developed a quantification method by integrating Bragg reflections from different phases to study how different phases grow/transform as a function of time. It was found that during dealloying process, the electrodeposited CuZn5 alloy first transformed to Cu5Zn8 phase and then transformed to pure Cu phase. The developed in situ XRD tool with quantification method provides us a deeper understanding of electrodeposition and dealloying process.In the previous work, a porous 3D Cu current collector was developed to suppress Li dendrite growth and enable stable Li anode cycling performance. Recent findings of different Li affinity on different Cu facets inspired us to synthesize Cu films with different texture and investigate Li plating behavior on different Cu exposing surfaces. By tuning different current densities and with using NaCl as additive, Cu films with different textures were successfully synthesized. In situ XRD data were collected and quantitatively analyzed to calculate the Relative Texture Coefficients (RTCs), which helps in understanding the formation of textures under various electrodeposition conditions. It was found NaCl additive and current density/voltage could sufficiently influence the texture of deposited Cu film. Cu film with a strong (220) texture were fabricated with 1 mM NaCl additive at a current density of 90 mA/cm2. As the current densities decrease, the texture intensity weakens.The aforementioned in situ XRD tool provided detailed insights into material synthesis process. To better utilize the synchrotron X-ray sources and improve materials synthesis and screening efficiency, a high throughput in situ X-ray diffraction characterization platform is developed to provide capability for the design and screening of complex alloys under different electrochemical deposition/ dealloying conditions. The high throughput in situ XRD platform was realized by a gradient cell design. The counter electrode is placed by one side of the working electrode/substrate, thus enabling ununiform current density on the substrate. To determine the distribution of current density on the substrate, single metal Cu was deposited using the gradient cell setup. The current density distribution was determined by the Cu phase growth rate at different locations on the substrate.
■590 ▼aSchool code: 0078.
■650 4▼aMetals
■650 4▼aElectrolytes
■650 4▼aInvestigations
■650 4▼aElectrodes
■650 4▼aSpectrum analysis
■650 4▼aElectron microscopes
■650 4▼aPlating
■650 4▼aDesign
■650 4▼aBatteries
■650 4▼aEnergy storage
■650 4▼aAlloys
■650 4▼aLithium
■650 4▼aRadiation
■650 4▼aX-rays
■650 4▼aComposite materials
■650 4▼aAnalytical chemistry
■650 4▼aMaterials science
■650 4▼aOptics
■690 ▼a0389
■690 ▼a0486
■690 ▼a0794
■690 ▼a0752
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05A.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360296▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


