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Ion Exchange

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...

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Updated: Jan 13, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Tunable Crosslinked Ether Polymer Network Electrolytes for High-Performance All-Solid-State Sodium Batteries.

Kristen Lason¹, Erick Ruoff¹, Arumugam Manthiram¹

¹Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA.

|October 28, 2025

Summary

This summary is machine-generated.

This study introduces poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) into solid polymer electrolytes (SPEs) to enhance amorphous structure and ionic conductivity. Optimized SPEs demonstrate improved safety and stability for all-solid-state batteries.

Keywords:

all‐solid‐state sodium batteries electrochemistry layered oxide cathode sodium metal anode solid polymer electrolyte

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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

Area of Science:

Materials Science
Electrochemistry
Polymer Chemistry

Background:

All-solid-state batteries (ASSBs) are crucial for next-generation energy storage, demanding enhanced safety and energy density.
Solid polymer electrolytes (SPEs) offer advantages like improved safety and flexibility, with ether-based polymers favored for their processability and ionic conductivity.
Achieving high ionic conductivity in SPEs often relies on maintaining an amorphous state.

Purpose of the Study:

To engineer amorphous, high ionic conductivity SPEs by incorporating poly(ethylene glycol) methyl ether methacrylate (PEGMEMA).
To optimize the polymer ratio and utilize end-group engineering for improved SPE performance.
To investigate the electrochemical properties and stability of the developed SPEs for ASSB applications.

Main Methods:

Synthesizing SPEs with varying ratios of poly(ethylene glycol) diacrylate (PEGDA), PEGMEMA, and poly(ethylene glycol) (PEG2k) with sodium bis(fluorosulfonyl)imide (NaFSI) salt.
Characterizing ionic conductivity (σᵢ) and oxidative stability of the SPEs.
Fabricating and testing a solid-state sodium battery using the optimized SPE, a Na₂/₃Ni₁/₃Mn₂/₃O₂ (NM12) cathode, and a sodium-metal anode.

Main Results:

A PEGDA:PEGMEMA:PEG2k ratio of 2:1:7 yielded an SPE with ionic conductivity of 1.16 x 10⁻⁴ S cm⁻¹.
The optimized SPE exhibited excellent oxidative stability up to 4.4 V at 60 °C.
The solid-state sodium battery demonstrated robust cycling stability, retaining over 80% capacity after 150 cycles at 60 °C.

Conclusions:

End-group engineering of SPEs using PEGMEMA is an effective strategy to enhance amorphous structure and ionic conductivity.
The optimized SPE composition shows significant promise for safe and high-performance all-solid-state sodium batteries.
This work provides valuable insights into designing advanced polymer electrolytes for future energy storage solutions.