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Related Experiment Video

Updated: Jun 22, 2026

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

Earth-abundant Li-ion cathode materials with nanoengineered microstructures.

Han-Ming Hau^1,2, Tara Mishra³, Colin Ophus⁴

¹Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA, USA.

Nature Nanotechnology

|September 19, 2024

Summary

This summary is machine-generated.

Manganese-based cathodes offer a stable, low-cost lithium-ion battery solution. Heating disordered manganese cathodes creates a unique nanostructure, enhancing electrochemical performance and enabling solid-solution lithium-ion insertion.

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Construction and Testing of Coin Cells of Lithium Ion Batteries

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Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Manganese-based materials are promising for next-generation lithium-ion cathodes due to abundance, cost, and stability.
Developing advanced cathode microstructures is key to improving electrochemical properties.

Purpose of the Study:

To investigate how manganese cation mobility influences microstructure in large-particle cathode materials.
To enhance electrochemical properties of manganese-based disordered rocksalt cathodes through controlled nanostructuring.

Main Methods:

Atomic-resolution scanning transmission electron microscopy (STEM).
Four-dimensional scanning electron nanodiffraction.
In situ X-ray diffraction (XRD).

Main Results:

Controlled heating of partially delithiated disordered rocksalt cathodes forms a nanomosaic of 3-7 nm spinel domains.
This nanodomain structure facilitates a solid-solution reaction, suppressing the detrimental 3V two-phase lithiation reaction.
Achieved 200 mAh g⁻¹ discharge capacity with good rate performance in micron-sized particles.

Conclusions:

Manganese cation mobility can be leveraged to create beneficial nanostructures in cathode materials.
Nanoengineering spinel-like phases offers a viable strategy for developing high-performance, Earth-abundant lithium-ion cathodes.