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Electrodeposition01:08

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.
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Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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Recycling nickel-rich cathodes toward structural and functional circularity: a perspective.

Yuhan Huang1, Haoyang Xu1, Yimin Zeng2

  • 1Department of Mechanical Engineering, University of Alberta Edmonton AB Canada ge.li@ualberta.ca.

Chemical Science
|May 20, 2026
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Summary

Recycling nickel-rich layered oxide cathodes requires advanced methods beyond elemental recovery. A new framework focuses on preserving structure and restoring function for sustainable lithium-ion battery lifecycles.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Sustainable Chemistry

Background:

  • Nickel-rich layered oxide cathodes (Ni ≥ 0.6) are crucial for lithium-ion batteries but pose recycling challenges.
  • Existing elemental recovery methods are insufficient for these advanced materials.

Purpose of the Study:

  • To establish a new framework for evaluating cathode recycling routes based on material circularity.
  • To identify advanced recycling strategies that preserve structure and restore function.

Main Methods:

  • Classification of recycling routes into elemental recovery, structural preservation, and functional restoration.
  • Critical assessment of direct recycling and upcycling techniques.
  • Analysis of degradation modes in Ni-rich cathodes.

Main Results:

  • Degradation modes like surface reconstruction and cation disorder limit conventional recycling.
  • Relithiation chemistry, molten-salt recrystallization, and AI-guided control show promise for higher circularity.
  • A strategic shift towards structural and functional restoration is needed.

Conclusions:

  • Current recycling methods are inadequate for Ni-rich cathodes.
  • Advanced strategies are necessary to achieve structural and functional circularity.
  • Preserving and restoring the cathode's crystal structure is key for sustainable battery recycling.