{
  "abstract": "The development of safe, high-performance solid electrolytes is critical for advancing next-generation solid-state lithium-ion batteries (SSLIBs). Perovskite-type Li0.33La0.56TiO₃ (LLTO) has emerged as a promising solid electrolyte for SSLIBs owing to its high thermal and mechanical stability; however, its moderate ionic conductivity and interfacial instability with lithium metal hinder its practical application. In this work, the ionic conductivity of LLTO was enhanced through A-site doping via partial substitution with Sr using two different Sr precursors (SrCO₃ and SrF₂). Sr-doped LLTO solid electrolytes were synthesised using a solid-state reaction method. Structural and microstructural analyses confirmed the successful incorporation of Sr into LLTO without the formation of secondary phases. Ionic conductivity measurements revealed that Sr-doped LLTO synthesised using the SrF₂ precursor (LLTO-SrF₂) exhibited higher ionic conductivity than that synthesised using the SrCO₃ precursor (LLTO-SrCO₃). The enhanced conductivity of LLTO-SrF₂ relative to LLTO-SrCO₃ and pristine LLTO was attributed to differences in their lattice parameters, densities, and microstructures. LLTO-SrF₂ exhibited a high room-temperature bulk ionic conductivity of 2.86 × 10⁻³ S cm⁻¹. To further address the interfacial instability with lithium metal, a PEO-based protective layer (PL) was placed around the LLTO-SrF₂ pellet ((LLTO-SrF₂)PL) to suppress parasitic reactions between Ti⁴⁺ and lithium metal while improving interfacial contact. The symmetric cell (Li/(LLTO-SrF₂)PL/Li) exhibited stable galvanostatic cycling for over 540 h with highly reversible and symmetric lithium plating/stripping behaviour. These results highlight the synergistic effect of Sr substitution in enhancing ionic conductivity and polymer layer engineering in improving electrochemical stability against lithium metal.",
  "abstract_shown": true,
  "affiliations": [
    "Solid State Ionics Lab, Department of Physics, SRM University AP Amaravati 522240 Andhra Pradesh India laxminarayana.p@srmap.edu.in patrolng@gmail.com +91-0863-2343111 +91-0863-2343000.",
    "SRM-Amara Raja Center for Energy Storage Devices, SRM University AP Amaravati 522240 Andhra Pradesh India.",
    "Department of Chemistry, SRM University AP Amaravati 522240 Andhra Pradesh India."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Tausif Alam",
      "orcid": "0000-0001-9194-520X"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Lakshmi Hrushita Korlapati"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Sumit Khatua"
    },
    {
      "affs": [
        2
      ],
      "name": "K Ramakrushna Achary"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "L N Patro",
      "orcid": "0000-0002-3942-6733"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8q7ks2k1t4f04.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra06621f",
  "fulltext_url": "https://europepmc.org/articles/PMC13636766",
  "id": "8q7ks2k1t4f04",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://europepmc.org/article/MED/42836031",
  "language": "eng",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Advanced Battery Materials and Technologies"
    ]
  ],
  "openalex": "W7220447740",
  "pdf_url": "https://europepmc.org/articles/PMC13636766?pdf=render",
  "pmcid": "PMC13636766",
  "pmid": "42836031",
  "published": "2026-10-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8q7ks2k1t4f04.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:10Z",
      "native_id": "MED:42836031",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42836031"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2046-2069",
      "subfield": "general"
    }
  ],
  "title": "Enhancing ionic conductivity and interfacial stability of perovskite-type LLTO solid electrolytes via synergistic A-site Sr substitution and polymer layer engineering for safer lithium-ion batteries.",
  "title_text": "Enhancing ionic conductivity and interfacial stability of perovskite-type LLTO solid electrolytes via synergistic A-site Sr substitution and polymer layer engineering for safer lithium-ion batteries.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:10Z",
  "url": "https://research.draconitic.com/paper/8q7ks2k1t4f04",
  "venue": "RSC advances",
  "versions": []
}