LITHIUM-BASED VERTICALLY ALIGNED NANCOMPOSITE FILMS INCORPORATING LixLa0.32(Nb0.7Ti0.32)O3 ELECTROLYTE WITH HIGH Li+ ION CONDUCTIVITY
AIP Publishing LLC
MetadataShow full item record
Lovett, A., Kursumovic, A., Dutton, S., Qi, Z., He, Z., Wang, H., & Driscoll, J. (2022). LITHIUM-BASED VERTICALLY ALIGNED NANCOMPOSITE FILMS INCORPORATING LixLa0.32(Nb0.7Ti0.32)O3 ELECTROLYTE WITH HIGH Li+ ION CONDUCTIVITY. APL Materials https://doi.org/10.1063/5.0086844
Vertically aligned nanocomposite (VAN) thin films have shown strong potential in oxide nanoionics but are yet to be explored in detail in solid-state battery systems. Their 3D architectures are attractive because they may allow enhancements in capacity, current and power densities. Also, owing to their large interfacial surface areas, VAN could serve as models to study interfaces and solid-electrolyte interphase formation. Here, we have deposited highly crystalline and epitaxial vertically aligned nanocomposite films comprised of a LixLa0.32±0.05(Nb0.7±0.1Ti0.32±0.05)O3±δ-Ti0.8±0.1Nb0.17±0.03O2±δ-anatase (herein referred to as LL(Nb,Ti)O-(Ti,Nb)O2) electrolyte/anode system, the first anode VAN battery system reported. This system has an order of magnitude increased Li+ ionic conductivity over that in bulk Li3xLa1/3-xNbO3 (LLNO) and is comparable with the best available Li3xLa2/3-xTiO3 (LLTO) pulsed laser deposition films. Furthermore, the ionic conducting/electrically insulating LL(Nb,Ti)O and electrically conducting (Ti,Nb)O2 phases are a prerequisite for an interdigitated electrolyte/anode system. This work opens up the possibility of incorporating VAN films into an all solid-state battery, either as electrodes or electrolytes, by the pairing of suitable materials.
ERC advanced grant, EU-H2020-ERC-ADG # 882929, EROS and the Royal Academy of Engineering grant CIET1819_24 EPSRC (EP/R513180/1) EPSRC CAM-IES grant, EP/P007767 EPSRC Faraday grant, EP/T005394/1 FutureCat. Cambridge Henry Royce Institute equipment, grant EP/P024947/1 Sir Henry Royce Institute - recurrent grant EP/R00661X/1. U.S. National Science Foundation (Purdue University): DMR-1565822, DMR-2016453 and DMR-1809520.
European Commission Horizon 2020 (H2020) ERC (882929)
Royal Academy of Engineering (RAEng) (CiET1819\24)
Faraday Institution (via University Of Sheffield) (FIRG017 160768)
Engineering and Physical Sciences Research Council (EP/P007767/1)
Engineering and Physical Sciences Research Council (EP/P024947/1)
Engineering and Physical Sciences Research Council (EP/R00661X/1)
External DOI: https://doi.org/10.1063/5.0086844
This record's URL: https://www.repository.cam.ac.uk/handle/1810/338348
Attribution 4.0 International
Licence URL: https://creativecommons.org/licenses/by/4.0/