Li2CoBO4

Li2CoBO4 is a metastable, semiconducting layered lithium transition-metal oxide used in advanced materials research for potential battery applications.

Crystal structure of Li2CoBO4 (orthorhombic, Pna21 (No. 33))
Ground-state structure · Materials Project
Overview

About Li2CoBO4

Li2CoBO4 is a complex layered lithium transition-metal oxide characterized by its semiconducting electronic nature. As a metastable phase, it represents a unique structural configuration within the broader family of lithium-based battery materials, offering distinct pathways for ion mobility and structural transformation.

This compound is of significant interest to researchers investigating advanced electrode materials. Its specific arrangement of lithium, cobalt, boron, and oxygen atoms provides a platform for studying the interplay between transition metal redox activity and structural stability in energy storage applications.

At a glance

Key Properties

Cross-validated computational properties for Li2CoBO4, aggregated across 2 databases.

Band Gap

0.04–0.10 eV
Range across DFT structures · ground state: narrow gap

Energy Above Hull

0.148 eV/atom
Best (lowest) across sources

Stability

Metastable
2 DFT sources

Structures

21
2 databases, 5 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of Li2CoBO4. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

0.70 / 1.00
Trust tier: medium

Hull Spread

0.074 eV
EAH spread across sources

Sources Compared

2
jarvis, materials_project

Space Group Consensus

Mixed (most: Pna21 (No. 33))
Crystallography

Reported Structures

Lowest-energy structures reported for Li2CoBO4, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
Pna21 (No. 33)orthorhombic1.430.0737-6.8553.33
C2221 (No. 20)orthorhombic1.340.0764-6.8523.22
P21/c (No. 14)monoclinic1.030.0786-6.8502.81
Pnma (No. 62)orthorhombic1.440.0858-6.8433.34
Pnma (No. 62)orthorhombic1.360.1095-6.8193.27
C2/m (No. 12)monoclinic0.930.1257-6.8033.18
C2221 (No. 20)orthorhombic0.090.1478-1.987—
C2221 (No. 20)orthorhombic0.100.1670-1.968—
C2/m (No. 12)monoclinic0.040.2019-1.933—
C2/m (No. 12)monoclinic———3.31
Pnma (No. 62)orthorhombic———3.46
C2221 (No. 20)orthorhombic———3.30
Uses

Applications

Where Li2CoBO4 is used.

Energy storage researchBattery electrode developmentSolid-state ionics
Reference

Frequently Asked Questions

Common questions about Li2CoBO4, answered from cross-validated data.

What is Li2CoBO4?

Li2CoBO4 is a metastable, semiconducting layered lithium transition-metal oxide used in advanced materials research for potential battery applications.

More questions
What is Li2CoBO4 used for?
Li2CoBO4 is used in energy storage research, battery electrode development, and solid-state ionics.
What is the band gap of Li2CoBO4?
Li2CoBO4 has a DFT-computed band gap of 0.04–0.10 eV across 21 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
Is Li2CoBO4 a metal, semiconductor, or insulator?
DFT predicts a near-zero band gap ((semi)metallic). Standard DFT underestimates gaps, so the real material may be a semiconductor.
Is Li2CoBO4 thermodynamically stable?
Li2CoBO4 has a lowest energy above hull of 0.148 eV/atom (metastable).
What is the crystal structure of Li2CoBO4?
The reference structure of Li2CoBO4 is orthorhombic symmetry, space group Pna21 (No. 33).
What is the density of Li2CoBO4?
The computed density of the ground-state structure of Li2CoBO4 is 3.33 g/cm³.
How many polymorphs of Li2CoBO4 are known?
21 structures of Li2CoBO4 are reported across 2 databases, spanning 5 distinct space groups.
What elements does Li2CoBO4 contain?
Li2CoBO4 contains B, Co, Li, and O (4 elements).
Where does the data for Li2CoBO4 come from?
Li2CoBO4 data is cross-referenced from materials_project, jarvis, mpaloe.
Comparison

How It Compares

Within the layered lithium transition-metal oxides class.

Within the class of layered lithium transition-metal oxides, Li2CoBO4 occupies a specialized niche compared to more conventional, highly stable materials like LiCoO2. While LiCoO2 serves as the industry standard for cathode performance, Li2CoBO4 is distinguished by its metastability and unique elemental composition, positioning it as an intriguing subject for fundamental research into non-traditional oxide frameworks.

Explore

Related Compounds

Other Layered Lithium Transition-Metal Oxides in the database.

Data sources & attribution
  • materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
  • jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
  • mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.

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