Solid-state lithium-ion battery employing LiBH<sub>4</sub>–ZrO<sub>2</sub> as a solid-state electrolyte
LiBH<sub>4</sub> has been extensively investigated as a solid-state electrolyte for Li-ion battery applications. The crucial point is that the operating temperature for this material needs to be above 120 °C, due to its low ionic conductivity at room temperature. In this study, the Li-ion conductivity of LiBH<sub>4</sub> has been enhanced by mixing it with ZrO<sub>2</sub>. The optimal composition of the mixture was found to be 37 v/v% of ZrO<sub>2</sub>, exhibiting a Li-ion conductivity of 3.32 × 10<sup>-4</sup> S cm<sup>-1</sup> at 60 °C. The electrochemical stability window of the mixture (2.4 V <i>vs.</i> Li<sup>+</sup>/Li) is slightly higher compared to that of pure LiBH<sub>4</sub>. The optimized mixture was used as an electrolyte in TiS<sub>2</sub>/Li all-solid-state Li-ion batteries. Two batteries were successfully cycled at 60 °C. The effect of charging profile was investigated to improve the performance of the battery.
Authors
- Peter Ngene (ORCID: https://orcid.org/0000-0003-3691-0623)
- Valerio Gulino (ORCID: https://orcid.org/0000-0002-5808-7802)
- Marcello Baricco (ORCID: https://orcid.org/0000-0002-2856-9894)
- Asya Mazzucco (ORCID: https://orcid.org/0009-0006-5578-9135)
- Petra E. de Jongh (ORCID: https://orcid.org/0000-0002-2216-2620)
- Mauro Francesco Sgroi (ORCID: https://orcid.org/0000-0002-0914-4217)
- Robert J. Wolterbeek
Institutions
- Utrecht University (NL)
- National Interuniversity Consortium of Materials Science and Technology (IT)
- University of Turin (IT)
Publication Details
- Journal
- RSC Advances
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5ra00916b
- Citations
- 1
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Dipartimenti di Eccellenza
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Ministero dell'Università e della Ricerca