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Electrides as Solid-State Ionic Conductors for Fluoride-Ion Batteries
Electrides as Solid-State Ionic Conductors for Fluoride-Ion Batteries
Electrides as Solid-State Ionic Conductors for Fluoride-Ion Batteries

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152133
ISBN  
9798383688151
DDC  
541
저자명  
Radomsky, Rebecca C.
서명/저자  
Electrides as Solid-State Ionic Conductors for Fluoride-Ion Batteries
발행사항  
[Sl] : The University of North Carolina at Chapel Hill, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
145 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
주기사항  
Advisor: Warren, Scott C.
학위논문주기  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2024.
초록/해제  
요약Batteries are an essential aspect of creating a renewable energy landscape. The use of Li-ion batteries has become widespread in the past few decades, but the demand for rechargeable batteries for consumer goods, electric vehicles, and grid energy storage continues to rise. Alternate ion shuttle batteries, such as fluoride-ion batteries (FIBs) are particularly interesting due to large predicted capacities and the large window of electrochemical redox stability of the F- anion. However, few materials that can reversibly intercalate F- have been studied. Herein, we study electrides-materials with bare electrons located in distinct lattice sites-as potential FIB anodes.First, we experimentally investigate the concept of electron-anion exchange (EAX) in which one F- ion and one electride electron directly swap places within an electride framework. We then computationally predict and experimentally synthesize the first two-dimensional (2D) semiconducting electride Sc2C. We then explore the Y-S phase space, and discover a family of new electrides based on the YSx rocksalt phase. The most electron-rich of these phases, Y6S4, is a promising F- ion conductor due to its 2D percolating network of electron density and large interlayer spaces. Ab initio molecular dynamics (AIMD) simulations predict that the activation energy for F- diffusion through Y6S4 is less than 80 meV. We then sought to find a compatible FIB solid-state electrolyte (SSE) and thus performed a high-throughput search fluoride-containing materials. We selected and successfully synthesized ZnSnF6 as an ideal candidate for a FIB electrolyte.
일반주제명  
Physical chemistry
일반주제명  
Energy
일반주제명  
Materials science
일반주제명  
Chemistry
키워드  
Battery
키워드  
Electrides
키워드  
Solid-state electrolyte
키워드  
Intercalation
키워드  
Materials discovery
기타저자  
The University of North Carolina at Chapel Hill Chemistry
기본자료저록  
Dissertations Abstracts International. 86-02B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■035    ▼a(MiAaPQ)AAI31483812
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a541
■1001  ▼aRadomsky,  Rebecca  C.
■24510▼aElectrides  as  Solid-State  Ionic  Conductors  for  Fluoride-Ion  Batteries
■260    ▼a[Sl]▼bThe  University  of  North  Carolina  at  Chapel  Hill▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a145  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-02,  Section:  B.
■500    ▼aAdvisor:  Warren,  Scott  C.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2024.
■520    ▼aBatteries  are  an  essential  aspect  of  creating  a  renewable  energy  landscape.  The  use  of  Li-ion  batteries  has  become  widespread  in  the  past  few  decades,  but  the  demand  for  rechargeable  batteries  for  consumer  goods,  electric  vehicles,  and  grid  energy  storage  continues  to  rise.  Alternate  ion  shuttle  batteries,  such  as  fluoride-ion  batteries  (FIBs)  are  particularly  interesting  due  to  large  predicted  capacities  and  the  large  window  of  electrochemical  redox  stability  of  the  F-  anion.  However,  few  materials  that  can  reversibly  intercalate  F-  have  been  studied.  Herein,  we  study  electrides-materials  with  bare  electrons  located  in  distinct  lattice  sites-as  potential  FIB  anodes.First,  we  experimentally  investigate  the  concept  of  electron-anion  exchange  (EAX)  in  which  one  F-  ion  and  one  electride  electron  directly  swap  places  within  an  electride  framework.  We  then  computationally  predict  and  experimentally  synthesize  the  first  two-dimensional  (2D)  semiconducting  electride  Sc2C.  We  then  explore  the  Y-S  phase  space,  and  discover  a  family  of  new  electrides  based  on  the  YSx  rocksalt  phase.  The  most  electron-rich  of  these  phases, Y6S4,  is  a  promising  F-  ion  conductor  due  to  its  2D  percolating  network  of  electron  density  and  large  interlayer  spaces.  Ab  initio  molecular  dynamics  (AIMD)  simulations  predict  that  the  activation  energy  for  F-  diffusion  through Y6S4  is  less  than  80  meV.  We  then  sought  to  find  a  compatible  FIB  solid-state  electrolyte  (SSE)  and  thus  performed  a  high-throughput  search  fluoride-containing  materials.  We  selected  and  successfully  synthesized  ZnSnF6  as  an  ideal  candidate  for  a  FIB  electrolyte.
■590    ▼aSchool  code:  0153.
■650  4▼aPhysical  chemistry
■650  4▼aEnergy
■650  4▼aMaterials  science
■650  4▼aChemistry
■653    ▼aBattery
■653    ▼aElectrides
■653    ▼aSolid-state  electrolyte
■653    ▼aIntercalation
■653    ▼aMaterials  discovery
■690    ▼a0494
■690    ▼a0794
■690    ▼a0791
■690    ▼a0485
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bChemistry.
■7730  ▼tDissertations  Abstracts  International▼g86-02B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163089▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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