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Title: Structural Degradation of Layered Cathode Materials in Lithium-Ion Batteries Induced by Ball Milling

Journal Article · · Journal of the Electrochemical Society
ORCiD logo [1];  [2];  [2];  [2];  [3];  [4]; ORCiD logo [5]; ORCiD logo [2]
  1. Changzhou Univ., Changzhou (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Univ. of California, Irvine, CA (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Layered LiNi0.4Mn0.4Co0.18Ti0.02O2 cathode powders were ball-milled for various lengths of time. The structural properties of the pristine and milled powders, which have different particle sizes were examined with X-ray diffraction, soft X-ray absorption spectroscopy, and transmission electron microscopy to determine the effect of milling on structure. Electrochemical testing in half-cells was also carried out and shows that milling plays an important role in the performance of these cathode materials; as milling time increases, there is a decrease in initial discharge capacity. The first cycle irreversible capacity also increases for milled samples, as does capacity loss upon cycling under some regimes.The electrochemical degradation is strongly correlated with damage to the lamellar structure of cathode particles induced by milling, and lithium carbonate formation.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515; AC02-05CH11231
OSTI ID:
1525566
Alternate ID(s):
OSTI ID: 1532438; OSTI ID: 1581738
Journal Information:
Journal of the Electrochemical Society, Vol. 166, Issue 10; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Figures / Tables (10)