Biobased phytic acid as a multifunctional structural and electrochemical modifier for high-ionic-conductivity PEO–LiTFSI solid polymer electrolytes
Abstract In this study, we showcase a multifunctional biobased phytic acid (PA) additive that is able to function effectively as both a structural and an electrochemical modifier for PEO 12 –LiTFSI solid polymer electrolytes (SPEs). Structural characterization shows that 20 wt% of PA has led to near-complete suppression of the detectable PEO crystalline peaks, which is accompanied by improved mechanical flexibility and increased tensile strength. Electrochemical analysis reveals a more than 34-fold enhancement in ionic conductivity, which is 3.88 × 10 − 4 S cm⁻¹ at 25 °C, and a high ionic transference number of 0.984. Moreover, the electrolyte possesses a widened oxidative stability range of 4.61 V and also demonstrates stable redox behavior in SS/SPE/Li cells. Full-cell tests with the configuration of Li/SPE/LiFePO 4 show very good performance in terms of rate capability and capacity retention throughout the range of 0.1–2 C, and upon returning to the low C-rate, approximately 91% capacity recovery is achieved.
Authors
- Ftema W. Aldbea (ORCID: https://orcid.org/0000-0002-2357-6235)
- Salem Mohammed Aldosari (ORCID: https://orcid.org/0000-0002-5774-0566)
- Mustafa A. Alheety (ORCID: https://orcid.org/0000-0002-1314-2150)
- Aseel Abdulameer Kareem (ORCID: https://orcid.org/0000-0002-5564-1222)
- Anji Reddy Polu (ORCID: https://orcid.org/0000-0003-3762-7571)
- Kuldeep Mishra (ORCID: https://orcid.org/0000-0002-3502-7460)
- Monika Srivastava (ORCID: https://orcid.org/0000-0002-3245-4416)
- Suneyana Rawat (ORCID: https://orcid.org/0009-0001-7884-5631)
- Deepak Kumar
- Serguei V. Savilov (ORCID: https://orcid.org/0000-0002-5827-3912)
- Rahul Johari (ORCID: https://orcid.org/0000-0002-2398-4677)
- Pramod K. Singh
Institutions
- King Abdulaziz City for Science and Technology (SA)
- University of Baghdad (IQ)
- Sebha University (LY)
- National Council Of Educational Research And Training (IN)
- Lomonosov Moscow State University (RU)
- Symbiosis International University (IN)
- Regional Institute of Education, Mysuru (IN)
- Al-Hikma University College (IQ)
- Sharda University (IN)
Publication Details
- Journal
- Scientific Reports
- Published
- 2026-11-06
- DOI
- https://doi.org/10.1038/s41598-026-78768-9
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Russian Science Foundation
- Sharda University
- Lomonosov Moscow State University