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PreprintCC BYChemRxiv

Structural and Electrochemical Evaluations of Li4Ti5O12 Composite Anodes with an Organic Ionic Plastic Crystal Solid Electrolyte

  • Hiroyuki Ueda1,2
  • Zak Quattrocchi1,2
  • Daheng Ou1,2
  1. 1Institute for Frontier Materials (IFM, Deakin University, 221 Burwood Highway, Burwood, Victoria, Australia, 3125
  2. 2Deakin University, 5/154 Highbury Road, Burwood, Victoria, Australia, 3125
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Abstract

Li 4 Ti 5 O 12 (LTO) is a commercialized anode active material for battery applications. Using LTO in solid-state batteries (SSBs) is expected to overcome some issues associated with anode active materials working at a low electrode potential, such as graphite and Si. Li+-containing organic ionic plastic crystals (OIPCs) reportedly have issues with these materials, including low Coulombic efficiency and achievable capacity relative to the theoretical value. This study explored the LTO−OIPC composite anode and evaluated its surface structure and electrochemical performance. It was found that the OIPC electrolyte (with carbon black) connects LTO secondary particles to facilitate ion/electron conduction. Although the capacity of the composite anode increased gradually up to ca. 15 cycles, it was close to the theoretical value (175 mAh/g) after stabilization. While applying a vacuum-drying temperature that is higher than the melting point of the Li+-containing OIPC (>140 °C) to the composite anode adversely affected initial battery performance, it provided multiple benefits thereafter, including more efficient charge transfer and higher discharge capacity than the one vacuum-dried at 50 °C. The best-performing cell contained the 150-°C-dried one, cycled at 1C for 400 cycles. The results provide insights into further development of OIPC-containing electrodes for SSBs.

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Cite

BibTeXRIS
BibTeX
@misc{ueda2026structural,
  title = {{Structural and Electrochemical Evaluations of Li4Ti5O12 Composite Anodes with an Organic Ionic Plastic Crystal Solid Electrolyte}},
  author = {Hiroyuki Ueda and Zak Quattrocchi and Daheng Ou},
  howpublished = {ChemRxiv},
  year = {2026},
  month = oct,
  doi = {10.26434/chemrxiv.15010057/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010057/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Structural and Electrochemical Evaluations of Li4Ti5O12 Composite Anodes with an Organic Ionic Plastic Crystal Solid Electrolyte
AU  - Hiroyuki Ueda
AU  - Zak Quattrocchi
AU  - Daheng Ou
PY  - 2026
DA  - 2026/10/07
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15010057/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010057/v1
AB  - Li 4 Ti 5 O 12 (LTO) is a commercialized anode active material for battery applications. Using LTO in solid-state batteries (SSBs) is expected to overcome some issues associated with anode active materials working at a low electrode potential, such as graphite and Si. Li+-containing organic ionic plastic crystals (OIPCs) reportedly have issues with these materials, including low Coulombic efficiency and achievable capacity relative to the theoretical value. This study explored the LTO−OIPC composite anode and evaluated its surface structure and electrochemical performance. It was found that the OIPC electrolyte (with carbon black) connects LTO secondary particles to facilitate ion/electron conduction. Although the capacity of the composite anode increased gradually up to ca. 15 cycles, it was close to the theoretical value (175 mAh/g) after stabilization. While applying a vacuum-drying temperature that is higher than the melting point of the Li+-containing OIPC (>140 °C) to the composite anode adversely affected initial battery performance, it provided multiple benefits thereafter, including more efficient charge transfer and higher discharge capacity than the one vacuum-dried at 50 °C. The best-performing cell contained the 150-°C-dried one, cycled at 1C for 400 cycles. The results provide insights into further development of OIPC-containing electrodes for SSBs.
ER  -