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Reversible planar gliding and microcracking in a single-crystalline Ni-rich cathode

Journal Article · · Science
 [1];  [1];  [2];  [1];  [1];  [3];  [1];  [1];  [1];  [1];  [2];  [4]
  1. Pacific Northwest National Laboratory, Richland, WA 99352, USA.
  2. School of Engineering, Brown University, Providence, RI 02912, USA., Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA.
  3. Chemistry Division, Brookhaven National Laboratory, Upton, NY 11973, USA.
  4. Pacific Northwest National Laboratory, Richland, WA 99352, USA., Materials Science and Engineering Department, University of Washington, Seattle, WA 98195, USA.
+ Show Author Affiliations

High-energy nickel (Ni)–rich cathode will play a key role in advanced lithium (Li)–ion batteries, but it suffers from moisture sensitivity, side reactions, and gas generation. Single-crystalline Ni-rich cathode has a great potential to address the challenges present in its polycrystalline counterpart by reducing phase boundaries and materials surfaces. However, synthesis of high-performance single-crystalline Ni-rich cathode is very challenging, notwithstanding a fundamental linkage between overpotential, microstructure, and electrochemical behaviors in single-crystalline Ni-rich cathodes. We observe reversible planar gliding and microcracking along the (003) plane in a single-crystalline Ni-rich cathode. The reversible formation of microstructure defects is correlated with the localized stresses induced by a concentration gradient of Li atoms in the lattice, providing clues to mitigate particle fracture from synthesis modifications.

Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; National Science Foundation (NSF)
Grant/Contract Number:
SC0012704
OSTI ID:
1734972
Alternate ID(s):
OSTI ID: 1735502
OSTI ID: 1737443
OSTI ID: 1760524
Journal Information:
Science, Journal Name: Science Journal Issue: 6522 Vol. 370; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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