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Title: A perspective on single-crystal layered oxide cathodes for lithium-ion batteries

Journal Article · · Energy Storage Materials
 [1];  [1]
  1. Univ. of Texas, Austin, TX (United States). Texas Materials Inst. McKetta Dept. of Chemical Engineering

As the demand for lithium-ion batteries grows exponentially to feed the nascent electric-vehicle and grid-storage markets, the need for higher energy density and longer cycle life becomes more apparent. Increasing the nickel content in the layered-oxide cathodes has been a dominant strategy to increase energy density, but this has exacerbated the surface reactivity concerns. Furthermore, the high states of charge associated with increased capacity lead to cracking of the polycrystalline cathode particles, which exposes fresh surfaces and accelerates capacity fade. Single-crystal cathode particles with low susceptibility to cracking have recently taken on intense interest due to their remarkable cyclability. Many different approaches to single-crystal synthesis have been explored, but there has been no systematic analysis of the different techniques to date. Furthermore, many reports have taken on a trial-and-error approach, ignoring well established literature on grain growth outside the battery field. This perspective reviews the literature on single-crystal cathode synthesis through the lens of classic grain growth theories, providing insight and hopefully accelerating the adoption of the promising single-crystal cathode morphology.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); USDOE
Grant/Contract Number:
EE0007762
OSTI ID:
1848570
Alternate ID(s):
OSTI ID: 1781206; OSTI ID: 2217341
Journal Information:
Energy Storage Materials, Vol. 37, Issue C; ISSN 2405-8297
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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