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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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Related Experiment Video

Updated: May 16, 2025

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

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

Published on: November 11, 2013

Co-Doping Engineered High Performance Ni-Rich Layered Cathode.

Kaili Li¹, Weixin Chen¹, Mingqiu Duan²

¹School of Materials, Sun Yat-Sen University, Shenzhen, 518107, China.

Small (Weinheim an Der Bergstrasse, Germany)

|April 3, 2025

Summary

This summary is machine-generated.

Lanthanum and magnesium co-doping enhances layered lithium nickel cobalt manganese oxide (NCM) cathodes by improving structural stability and conductivity. This strategy boosts performance for durable, high-performance rechargeable lithium-ion batteries.

Keywords:

La and Mg co‐doping anion redox layered LiNixCoyMnzO2 lithium‐ion battery

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Area of Science:

Materials Science
Electrochemistry
Solid-State Chemistry

Background:

Layered LiNi_xCo_yMn_zO₂ (NCM) cathodes are crucial for high energy density rechargeable lithium-ion batteries (LIBs).
NCM materials face challenges including anisotropic strain-induced cracking and poor structural/thermal stability, hindering industrial scale-up.
Developing stable and durable NCM cathodes is essential for next-generation energy storage.

Purpose of the Study:

To investigate the synergistic effects of Lanthanum (La) and Magnesium (Mg) co-doping on NCM cathode materials.
To enhance the structural integrity, ionic/electronic conductivity, and electrochemical performance of NCM cathodes.
To improve the thermal and cycling stability of NCM cathodes for practical LIB applications.

Main Methods:

Theoretical and experimental co-doping of La and Mg into layered NCM structures.
Characterization of primary particle modification through lattice orientation regulation.
Analysis of surface perovskite-phase coating formation and its impact on stability.

Main Results:

Co-doping with La/Mg resulted in radial grain orientation and improved ionic/electronic conductivities.
The synthesized La/Mg co-doped NCM cathode achieved a discharge capacity of 203 mAh g^-1 at 0.1 C and 126.2 mAh g^-1 at 10 C.
A La-based perovskite protective layer formed on the surface, enhancing structural and thermal stability by stabilizing lattice oxygen ions.

Conclusions:

One-step La/Mg co-doping effectively modifies NCM cathodes, addressing key stability and performance limitations.
The synergistic doping strategy and surface passivation are promising for developing practical, high-performance, and durable rechargeable Li batteries.
This approach offers a viable pathway for advancing NCM cathode technology in the field of energy storage.