본문

서브메뉴

Investigation on Electrodeposition of Metals and Alloys with Advanced Characterizations
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
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05A.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2024        us                              c    eng  d
■001000017360296
■00520260202105420
■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.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF18964 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.