# Understanding Ion Distribution and Diffusion in Solid Polymer Electrolytes

Source: [Understanding Ion Distribution and Diffusion in Solid Polymer Electrolytes](<https://www.sota2.com/research/paper/68fa47201e209131ce925a73>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:54:47.082Z

Authors: Ganesh K Rajahmundry, Tarak K Patra

Published: 2024-06-01T02:20:36.000Z

## Abstract

Solid polymer electrolytes exhibit ion conduction and high mechanical properties, thus are promising materials for future energy storage devices. The ion conductivity in an SPE is intricately connected to salt ion distribution in the polymer matrix. The relationship between ion diffusion and ion distribution remains unresolved. Here, we conduct coarse grained molecular dynamics simulations and establish correlations between ion distribution and transport for a phenomenological SPE model. We propose phase diagrams of SPEs as a function of ion pair size, ion concentration and the Bjerrum length of the material. A crossover from a discrete ion aggregate to a percolated ion aggregate is demonstrated as a function of ion pair size in the SPE. Further, we determine ion diffusions for all the phases of the SPE. The work provides important design strategies for controlling ion distribution and enhancing ion conductivity in a polymer matrix.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2406.00270>)

[PDF](<https://arxiv.org/pdf/2406.00270.pdf>)