{
  "abstract": "Li+-containing organic ionic plastic crystals (OIPCs) show great promise as solid electrolytes for solid-state batteries. However, their ongoing issue is a decrease in the melting point with an increase in the Li+ concentration, requiring a new strategy to improve ion-transport properties without compromising the operating temperature range of the electrolytes as a solid. Herein, we address this by incorporating a small portion of zwitterions into an OIPC matrix, N,Ndiethylpyrrolidinium bis(fluorosulfonyl)imide ([C2epyr][FSI]). The effect of zwitterion incorporation on physicochemical properties depends on the type of zwitterion. If its structure is similar to the host OIPC, it improves ionic conductivity without narrowing down the temperature range as a plastic crystal, which is supported by minimal destruction to the host crystalline lattice without obvious formation of new crystalline phases. The cycle test of solid-state Li | LiFePO4−[C2epyr][FSI] cells with various concentrations of the pyrrolidinium-based zwitterion in the cathode layer showed the most stable discharge capacity of 150 mAh/g at 0.1C, 50 °C for the cell with 8.70 mol% of the zwitterion, without any sign of capacity decay. Impedance analysis unveiled the positive effect of the zwitterion addition at this concentration regime, which stabilizes cathode-electrolyte interphase and charge transfer at the LFP interface.",
  "abstract_shown": true,
  "affiliations": [
    "Institute for Frontier Materials (IFM, Deakin University, 221 Burwood Highway, Burwood, Victoria, Australia, 3125",
    "Deakin University, 5/154 Highbury Road, Burwood, Victoria, Australia, 3125",
    "Innovation Strategy Division, Mitsubishi Chemical Corporation, 1000 Kamoshida-cho, Aobaku, Yokohama, Japan, 227-8502"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Hiroyuki Ueda",
      "orcid": "0000-0002-1278-8734"
    },
    {
      "affs": [
        2
      ],
      "name": "Hiroki Sugisawa"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Frederick Nti"
    },
    {
      "affs": [
        2
      ],
      "name": "Toshifumi Takahashi"
    },
    {
      "affs": [
        2
      ],
      "name": "Emi Nakatsuka"
    },
    {
      "affs": [
        2
      ],
      "name": "Hiroyuki Aikyo"
    },
    {
      "affs": [
        2
      ],
      "name": "Kaoru Fukii"
    },
    {
      "affs": [
        2
      ],
      "name": "Masahiko Kato"
    },
    {
      "affs": [
        2
      ],
      "name": "Kenichi Satake"
    },
    {
      "affs": [
        2
      ],
      "name": "Kazunori Mukunoki"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Robert Kerr"
    },
    {
      "affs": [
        0
      ],
      "name": "Jennifer M. Pringle"
    },
    {
      "affs": [
        2
      ],
      "name": "Tomofumi Hamamura"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/065ky89cxavkm.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009577/v1",
  "fulltext_url": null,
  "id": "065ky89cxavkm",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009577/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Advanced Battery Materials and Technologies"
    ]
  ],
  "openalex": "W7214735173",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009577/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/065ky89cxavkm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:21Z",
      "native_id": "10.26434/chemrxiv.15009577",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009577/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "Zwitterion Doping to an Organic Ionic Plastic Crystal Electrolyte: A Strategy to Improve Ionic Conductivity without Compromising Melting Point",
  "title_text": "Zwitterion Doping to an Organic Ionic Plastic Crystal Electrolyte: A Strategy to Improve Ionic Conductivity without Compromising Melting Point",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:21Z",
  "url": "https://research.draconitic.com/paper/065ky89cxavkm",
  "venue": "ChemRxiv",
  "versions": []
}