Synergistic effect of nanoionic destabilization and partial dehydrogenation for enhanced ionic conductivity in MBH₄-C₆₀ (M = Li⁺, Na⁺) nanocomposites
Abstract
In this work, we evaluate the electrochemical properties of MBH₄-C₆₀ (M = Li⁺, Na⁺) nanocomposites for potential use as a solid-state electrolyte in alkali-ion batteries. The enhancement of ionic conductivity for MBH₄ was achieved through the addition of C₆₀ and partial dehydrogenation, resulting in an electrolyte with significantly higher ionic conductivity when compared to the pure MBH₄. This improvement is attributed to the nanoionic destabilization of the MBH₄ salt due to the affinity of the BH₄− anion for C₆₀ and partial dehydrogenation of the MBH₄ through heating. The LiBH₄-C₆₀ nanocomposite was successfully paired with two anodes (graphite and lithium titanate) and two cathodes (LiFePO₄ and TiS₂) and galvanostatically cycled. The NaBH₄-C₆₀ nanocomposite showed nearly a 4-order-of-magnitude increase in ionic conductivity versus pure NaBH₄ and demonstrated reversible sodium stripping and plating in a symmetric cell.
Additional Information
© The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature 2021. Received 02 November 2020; Revised 12 January 2021; Accepted 12 February 2021. Work at CSUN was supported through a CSUN Research, Scholarship and Creative Activity (RSCA) Award. Work at SRNL was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, and the Savannah River National Laboratory LDRD program. The NMR facility at the California Institute of Technology was supported by the National Science Foundation (NSF) under Grant Number 9724240 and partially supported by the MRSEC Program of the NSF under Award Number DMR-520565. Author Contributions: Conceptualization: J.A.T., P.A.W., and R.Z.; methodology and electrochemical work: J.A.S., P.S., C.B., and A.R.B.; microscopy and thermal analysis: P.A.W; ss-NMR, and S.H. The authors declare no competing interests.Additional details
- Alternative title
- Synergistic effect of nanoionic destabilization and partial dehydrogenation for enhanced ionic conductivity in MBH4-C60 (M = Li+, Na+) nanocomposites
- Eprint ID
- 108262
- DOI
- 10.1007/s10008-021-04918-w
- Resolver ID
- CaltechAUTHORS:20210302-073005764
- California State University, Northridge
- Department of Energy (DOE)
- Savannah River National Laboratory
- DMR-9724240
- NSF
- DMR-520565
- NSF
- Created
-
2021-03-02Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field