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Updated: Mar 7, 2026

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

Ion-Conductive Dispersant Enabling Scalable Wet-Processed Composite Electrodes for High Performance All-Solid-State

Eunhyuk Choi¹, Seung Woo Nam¹, Dongkyu Lee¹

¹School of Mechanical Engineering, Korea University, Seoul, Republic of Korea.

|March 6, 2026

Summary

This summary is machine-generated.

Researchers developed an ion-conductive dispersant, lithium dioctyl sulfosuccinate (Li-AOT), for all-solid-state batteries (ASSBs). This breakthrough enables scalable fabrication of dense composite electrodes, improving battery performance and safety.

Keywords:

all‐solid‐state batteries composite electrodes ion‐conductive dispersant slurry‐based wet‐processing

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Area of Science:

Materials Science
Electrochemistry
Battery Technology

Background:

All-solid-state batteries (ASSBs) offer enhanced safety and energy density over Li-ion batteries.
Scalable fabrication of dense composite electrodes is a critical bottleneck for ASSB commercialization.
Existing methods struggle to balance electrode density, ionic conductivity, and electronic percolation.

Purpose of the Study:

To introduce a novel ion-conductive dispersant strategy for sulfide-based composite electrodes.
To demonstrate the efficacy of lithium dioctyl sulfosuccinate (Li-AOT) as an ion-conductive dispersant.
To enable scalable slurry-based processing for high-performance ASSBs.

Main Methods:

Design and synthesis of Li-AOT with specific headgroup and alkyl chain properties.
Characterization of Li-AOT's solubility, affinity for sulfide electrolytes, and impact on ionic conductivity.
Fabrication and electrochemical testing of high-loading composite cathodes using Li-AOT.

Main Results:

Li-AOT integrates into the Li+ conduction network, unlike conventional surfactants.
It enhances electronic percolation through uniform carbon nanotube dispersion.
Achieved dense, void-lean microstructures with reduced interfacial resistance and polarization.
Demonstrated improved rate capability in high-loading composite cathodes (20 mg cm-2).

Conclusions:

Li-AOT serves as an effective ion-conductive dispersant for sulfide-based composite electrodes.
This strategy provides a scalable pathway for slurry-based wet processing of ASSBs.
The developed design paradigm offers a generalizable approach for future ASSB electrode development.