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Title: Thermal dynamics of P2-Na0.67Ni0.33Mn0.67O2 cathode materials for sodium ion batteries studied by in situ analysis

Journal Article · · Journal of Materials Research
 [1];  [2];  [2];  [3];  [4];  [2];  [3];  [5]
  1. Boise State Univ., ID (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Boise State Univ., ID (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. City Univ. of Hong Kong (China)
  5. Boise State Univ., ID (United States); Center for Advanced Energy Studies, Idaho Falls, ID (United States)
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Layered Na0.67Ni0.33Mn0.67O2 is an attractive cathode material for sodium ion batteries. The thermal stability of cathode materials is crucial to their practical applications. In this work, we investigate structural and morphological evolution in layered P2-type Na0.67Ni0.33Mn0.67O2 cathode materials during annealing via in situ synchrotron X-ray diffraction and transmission electron microscopy. Insights are obtained from two complementary in situ characterizations (at different length scales) in terms of the thermal stability of P2-Na0.67Ni0.33Mn0.67O2 cathode materials. Overall, the results indicate that the hexagonal P2 phase remains unchanged during the heat-treatment process, and thermally driven expansion/contraction of the lattice parameters exhibits an anisotropic change in the a and c directions. In addition, interfaces/grain boundaries play an important role in the structural stability, which leads to the distinct morphological evolution between the polycrystalline and single-crystal particles.

Research Organization:
Boise State Univ., ID (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019121; AC02-06CH11357
OSTI ID:
1859754
Alternate ID(s):
OSTI ID: 1872949
Journal Information:
Journal of Materials Research, Vol. 37, Issue 6; ISSN 0884-2914
Publisher:
Materials Research SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (26)

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Role of Lithium Doping in P2-Na 0.67 Ni 0.33 Mn 0.67 O 2 for Sodium-Ion Batteries journal June 2021
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Thermal Expansion in Layered Na x MO2 journal March 2018
Materials Design for High‐Safety Sodium‐Ion Battery journal May 2020
In situ Raman spectroscopy reveals the mechanism of titanium substitution in P2–Na2/3Ni1/3Mn2/3O2: Cathode materials for sodium batteries journal February 2021
Sodium-driven Rechargeable Batteries: An Effort towards Future Energy Storage journal December 2020
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Investigation of Thermal Stability of P2–Na x CoO 2 Cathode Materials for Sodium Ion Batteries Using Real-Time Electron Microscopy journal May 2017
Li-Substituted Layered Spinel Cathode Material for Sodium Ion Batteries journal October 2018
A cost and resource analysis of sodium-ion batteries journal March 2018
Origins of Irreversibility in Layered NaNi x Fe y Mn z O 2 Cathode Materials for Sodium Ion Batteries journal November 2020

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Related Subjects

25 ENERGY STORAGE
sodium ion batteries
thermal behavior
in situ synchrotron XRD
in situ TEM