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Persistent State-of-Charge Heterogeneity in Relaxed, Partially Charged Li1- x Ni1/3 Co1/3 Mn1/3 O2 Secondary Particles.
Gent, William E; Li, Yiyang; Ahn, Sungjin; Lim, Jongwoo; Liu, Yijin; Wise, Anna M; Gopal, Chirranjeevi Balaji; Mueller, David N; Davis, Ryan; Weker, Johanna Nelson; Park, Jin-Hwan; Doo, Seok-Kwang; Chueh, William C.
Afiliação
  • Gent WE; Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, CA, 94305, USA.
  • Li Y; Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
  • Ahn S; Energy Lab, Samsung Advanced Institute of Technology, 130, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16678, South Korea.
  • Lim J; Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
  • Liu Y; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2757 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Wise AM; Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
  • Gopal CB; Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
  • Mueller DN; Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
  • Davis R; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2757 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Weker JN; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2757 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Park JH; Energy Lab, Samsung Advanced Institute of Technology, 130, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16678, South Korea.
  • Doo SK; Energy Lab, Samsung Advanced Institute of Technology, 130, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16678, South Korea.
  • Chueh WC; Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA, 94305, USA.
Adv Mater ; 28(31): 6631-8, 2016 Aug.
Article em En | MEDLINE | ID: mdl-27187238
ABSTRACT
Ex situ transmission X-ray microscopy reveals micrometer-scale state-of-charge heterogeneity in solid-solution Li1- x Ni1/3 Co1/3 Mn1/3 O2 secondary particles even after extensive relaxation. The heterogeneity generates overcharged domains at the cutoff voltage, which may accelerate capacity fading and increase impedance with extended cycling. It is proposed that optimized secondary structures can minimize the state-of-charge heterogeneity by mitigating the buildup of nonuniform internal stresses associated with volume changes during charge.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Estados Unidos