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Related Experiment Video

Updated: May 12, 2025

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
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Binderless Dry Cathode Using a Nanoparticle Deposition System for Lithium-Ion Battery Applications.

Jiseon Kim1, Seoa Kim2, Junsang Yoo2

  • 1Department of Materials Science and Chemical Engineering, Hanyang University (ERICA), Ansan 15500, Republic of Korea.

ACS Applied Materials & Interfaces
|April 25, 2025
PubMed
Summary

Binder-free dry cathodes for lithium-ion batteries were produced using a novel nanoparticle deposition system (NPDS). This method enhances adhesion, leading to superior discharge capacity, rate capability, and cyclability compared to traditional wet slurry methods.

Keywords:
NCMbinder-freedry cathodedry processinglithium-ion batterynanoparticle deposition system (NPDS)solvent-free

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Binder-free dry cathodes offer significant cost and energy density advantages for lithium-ion batteries by eliminating binder materials and associated processing steps.
  • Traditional wet slurry coating methods face challenges in achieving optimal binder-free film properties and adhesion.

Purpose of the Study:

  • To introduce and evaluate a novel nanoparticle deposition system (NPDS) for the fabrication of binder-free dry cathodes.
  • To compare the performance of NPDS-fabricated cathodes with conventionally produced wet slurry cathodes.

Main Methods:

  • Utilized a nanoparticle deposition system (NPDS) employing supersonic powder acceleration and substrate collision.
  • Fabricated binder-free dry cathodes using LiNi0.9Co0.05Mn0.05O2 commercial powders.
  • Performed tape tests, discharge capacity, rate capability, and cycling performance evaluations.

Main Results:

  • NPDS successfully produced binder-free dry cathodes with enhanced adhesion compared to wet slurry cathodes.
  • The dry cathodes demonstrated superior discharge capacity, improved rate capability up to 20 C, and better cyclability over 200 cycles.
  • Capacity retention for the dry cathode was 62% after 200 cycles, significantly outperforming the wet cathode's 44% retention.

Conclusions:

  • The nanoparticle deposition system (NPDS) is a viable method for producing high-performance binder-free dry cathodes.
  • Enhanced particle adhesion achieved through NPDS leads to improved electrochemical performance and durability in lithium-ion batteries.
  • This technology lays the foundation for cost-effective and high-energy-density battery manufacturing.