Work

Influence of thermal processing and doping concentration on phase behaviour of a lithium-transporting organic ionic plastic crystal

Year: 2025

Type: preprint

Abstract: The structural and transport properties of an organic ionic plastic crystal (OIPC), triisobutyl(methyl)phosphonium bis(fluorosulfonyl)imide (P1444FSI) with the addition of lithium bis(fluorosulfonyl)imide (LiFSI) have been investigated with a combined experimental and computational approach. After establishing the effect of thermal processing on structural and transport properties of P1444FSI, a consistent processing procedure was established to understand how P1444FSI properties change with increasing temperature and LiFSI concentration. Elevated rotational motions of ions on the plastic crystalline lattice coincides with and may facilitate solid-solid phase transitions in P1444FSI, while the transport of lithium cations within LiFSI-doped P1444FSI was found to be dominated by increased translational diffusivity with little change in rotational diffusivity. The trade-off between increased ion conductivity in the solid-state and decreased mechanical robustness with increasing LiFSI concentration presents an important challenge for P1444FSI-based solid-state electrolytes moving forward.

Source: ChemRxiv

DOI: 10.26434/chemrxiv-2025-b2jmw

Authors: Nicholas Boynton, Leah Hess, Soumajit Dutta, Camille Kuwana, Priyadarshini Mirmira, Gabrielle Solymosy, Alexander Filatov, Trevor Hagan, Sophia Bartridge, Aiden Rambo, Jenna Dibeh, Stephanie Vivod, Asem Abdulahad, Chibueze Amanchukwu, Andrew Ferguson, Stuart Rowan, Shrayesh Patel

Institutions: University of Chicago, Xavier University of Louisiana, Glenn Research Center

Language: English

Topic: Advanced Battery Materials and Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, National Aeronautics and Space Administration, National Institutes of Health, University of Illinois at Urbana-Champaign, Materials Research Science and Engineering Center, Harvard University, Division of Materials Research

Awards: G2879087551, Materials Research Science and Engineering Center, MRI: Acquisition of a high-performance GPU-based computer for advanced multiscale materials modeling, Collaborative Research: XULA-UChicago Partnership for Research and Education in Innovative Composite Materials, G4657484576, G7820774471, G8048112891, G935552465

OpenAlex ID: W4412765835

Cites:

Cited by: 1

Related to: 10