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LiNiO2

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-770635 · Space group: I4_1/amd (#141)

Basic Information

Formula
LiNiO2
MP-ID
mp-770635
Elements
3
Sites
8
Density
5.0081
g/cm³
Volume
64.74
ų
Cell a
3.9649
Å
Cell b
4.9834
Å
Cell c
3.9649
Å
α Angle
66.54
°
β Angle
90.02
°
γ Angle
113.46
°
Space Group
I4_1/amd
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal I
Stability
No
Packing Fraction
0.7400

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
24.92 3.5729 100.0 (1,-1,0)
24.92 3.5729 100.0 (0,1,1)
24.93 3.5722 99.8 (1,0,0)
24.93 3.5722 99.7 (0,0,1)
38.85 2.3183 22.1 (1,-2,-1)
38.86 2.3175 22.1 (1,0,-1)
38.86 2.3173 22.1 (1,-1,1)
38.86 2.3173 22.1 (1,1,1)
39.93 2.2576 15.7 (1,-2,0)
39.93 2.2576 15.7 (0,2,1)
39.95 2.2570 15.7 (0,1,-1)
39.95 2.2570 15.7 (1,1,0)
43.97 2.0593 96.2 (0,2,0)
45.77 1.9825 91.1 (2,-1,0)
45.77 1.9825 91.1 (0,1,2)
52.80 1.7338 11.5 (2,-2,-1)
52.80 1.7338 11.5 (1,-2,-2)
52.81 1.7336 11.4 (2,-1,-1)
52.81 1.7336 11.4 (1,-1,-2)
52.82 1.7333 11.4 (2,-1,1)
52.82 1.7333 11.4 (1,1,2)
52.82 1.7332 11.4 (2,0,1)
52.82 1.7332 11.4 (1,0,2)
60.89 1.5215 10.2 (1,-3,0)
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Energy Properties

Formation Energy/atom
-1.48281
eV/atom
Energy/atom
-5.87905
eV/atom
Energy above Hull
0.0152
eV/atom
Uncorrected Energy
-8.1338
eV/atom
Volume/atom
8.09
ų
c/a Ratio
1.0000

Electronic Properties

Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
2.0003
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.030890
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.500
Element Family
Metalloid-Nonmetal
Solute Fraction
0.500
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0397
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.6442
J/mol·K
Ω Parameter
2.4758
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
40.643%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0503
smaller = more stable mixing
VEC
4.750
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-2.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9464
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.499
Family
O-rich Multi-Component
Matrix Element
O · 0.500

Related Tasks

Related computation task IDs (2)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-770635
Reference Citation

The crystal structure and related material properties of LiNiO2 were obtained from the Materials Project database (MP-ID: mp-770635, database version v2026.04.13).

Literature Citation

Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# generated using pymatgen
data_LiNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.96490013
_cell_length_b   4.98334656
_cell_length_c   3.96489500
_cell_angle_alpha   66.53603949
_cell_angle_beta   90.01972687
_cell_angle_gamma   113.46405506
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiNiO2
_chemical_formula_sum   'Li2 Ni2 O4'
_cell_volume   64.74460175
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Li  Li0  1  0.24973562  0.49999976  0.24974457  1.0
  Li  Li1  1  0.50026159  0.99999857  0.50027172  1.0
  Ni  Ni2  1  0.00005599  -0.00000276  0.00007434  1.0
  Ni  Ni3  1  0.74994502  0.50000234  0.74995812  1.0
  O  O4  1  0.76971687  0.53975713  0.23009471  1.0
  O  O5  1  0.23013229  0.46024438  0.76972389  1.0
  O  O6  1  0.51987045  0.03976136  0.98028790  1.0
  O  O7  1  0.98028216  0.96023721  0.51984276  1.0
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