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Updated: Jun 26, 2025

Construction and Testing of Coin Cells of Lithium Ion Batteries

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

High-Voltage Spinel Cathode Materials: Navigating the Structural Evolution for Lithium-Ion Batteries.

Xiaobo Zhu¹, Aoyu Huang¹, Isaac Martens²

¹College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha, 410114, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)

|May 9, 2024

Summary

High-voltage lithium nickel manganese oxide (LiNi₀.₅Mn₁.₅O₄) spinels are promising cobalt-free cathode materials for lithium-ion batteries (LIBs). Understanding their crystallography and structural evolution is key to overcoming commercialization challenges.

Keywords:

LiNi0.5Mn1.5O4 high‐voltage spinel lithium‐ion batteries operando phase segregation structural evolution

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Area of Science:

Materials Science
Electrochemistry
Crystallography

Background:

High-voltage LiNi₀.₅Mn₁.₅O₄ (LNMO) spinel oxides are crucial cobalt-free cathode materials for lithium-ion batteries (LIBs).
Despite extensive research, commercial application of LNMOs faces challenges, necessitating a deeper understanding of their structural properties.
Crystallography and structural evolution during synthesis and operation are critical for advancing LNMO performance.

Purpose of the Study:

To review and update the fundamental knowledge of LNMO crystallography, phase transitions, and electrochemical behavior.
To provide insights into the structure-composition relationship and polymorph interconversion in LNMOs.
To comprehensively discuss phase transition mechanisms and their impact on electrochemical properties.

Main Methods:

Literature review focusing on crystallography, phase transitions, and electrochemical behavior of LNMOs.
Analysis of structural basics, including crystal polymorphism and interconversion mechanisms.
Discussion of phase transition dynamics from thermodynamic principles to operando observations.

Main Results:

Detailed review of LNMO crystal polymorphism, including classic and updated views.
Comprehensive analysis of phase transition mechanisms connecting structural and electrochemical properties.
Exploration of phase evolutions during overlithiation and thermal/electrochemical transformations.

Conclusions:

A thorough understanding of LNMO crystallography and phase transitions is essential for their development as LIB cathodes.
Addressing structural complexities and phase evolutions is critical for unlocking the full potential of LNMOs.
Recommendations are provided for the future development of LNMOs and similar complex battery materials.