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Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

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How Does the Precursor Influence the Li-Rich Layered Oxide Cathode?

Yizhen Huang¹, Chunpu Li¹, Kang Zhang¹

¹State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.

Angewandte Chemie (International Ed. in English)

|November 3, 2025

Summary

Hydroxide precursors offer superior structure and stability for lithium-rich layered oxide (LRLO) cathodes compared to carbonate precursors. This research highlights hydroxide precursors for improved Li-ion battery performance and scalability.

Keywords:

Anionic redox Lithium‐rich cathode Precursor Primary‐particle stacking density Structure distortion

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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Precursor selection is critical for lithium-ion battery (LIB) cathode performance and scalability.
Current research on lithium-rich layered oxide (LRLO) cathodes predominantly uses carbonate precursors, neglecting hydroxide precursors used commercially for NCM cathodes.

Purpose of the Study:

To establish the structure-property relationship between LRLO cathodes derived from carbonate (CO3-) and hydroxide (OH-) precursors.
To highlight the significance of primary-particle stacking density (PSD) in LRLO cathode performance.
To propose optimization strategies for LRLO cathodes based on precursor type.

Main Methods:

Comparative analysis of CO3-LRLO and OH-LRLO cathodes.
Investigation of particle architectural features, focusing on primary-particle stacking density (PSD).
Implementation of optimization approaches including electrolyte engineering, lattice doping, and blending strategies.

Main Results:

Lower PSD in CO3-LRLO cathodes enhances Li+ diffusion but causes cracks, reducing energy density and stability.
Higher PSD in OH-LRLO cathodes improves structural integrity, covalent environment, and layered structure.
Optimization strategies were successfully applied to mitigate precursor-derived drawbacks.

Conclusions:

Hydroxide precursors offer significant advantages over carbonate precursors for LRLO cathode development.
Optimizing PSD is key to enhancing LRLO cathode performance, stability, and volumetric energy density.
This work advocates for the broader adoption of hydroxide precursors in LRLO research and development for practical applications.