Properties of garnet-type Li 6 La 3 ZrTaO 12 solid electrolyte films fabricated by aerosol deposition method

Inada, Ryoji; Okada, Takayuki; Bando, Akihiro; Tojo, Tomohiro; Sakurai, Yasuhisa

doi:10.1016/j.pnsc.2017.06.002

Cited by 31 publications

(15 citation statements)

References 40 publications

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“…The peaks from other secondary phases were not observed, but the peaks for LVO become broader than those for the powder used for AD. A similar phenomenon has been confirmed in other ceramic films formed by AD [25,26,32,34,35,36,37,38,39,40,41]. This could be attributed to the degradation of the crystallinity and/or the atomization of LVO particles during the impact consolidation.…”

Section: Resultssupporting

confidence: 81%

“…Both the electronic and ionic conductivity of LVO are reported to be around 10 −7 S cm −1 at room temperature [49]. Moreover, a LVO film formed by AD has many grain boundaries among the fractured LVO nanoparticles, which may cause large grain boundary resistance [34,35,36,37,38,39,40,41] and prevent the transport of electrons and Li + in the film. In order to distinguish between the percolation limitation of the cathode film and the cathode/electrolyte interface, the electrical conducting properties of a LVO film formed by AD should be investigated further in the future.…”

Section: Resultsmentioning

confidence: 99%

“…The electrochemical properties of film-shaped electrodes of LiMn 2 O 4 [28], Si alloy or composite [29], LiFePO 4 [30], Li 4 Ti 5 O 12 [31], LiNi 1/3 Co 1/3 Mn 1/3 O 2 [32,33], Fe 2 O 3 [34], TiNb 2 O 7 [35] and LiNi 0.5 Mn 1.5 O 4 [36] formed on a metal and a SE substrate are investigated to verify the feasibility of AD. In addition, as-deposited oxide-based SE films with NASICON (Na Superionic Conductor) [37,38], perovskite [39] and garnet-type structure [40,41] show moderate Li + conductivity around 10 −7 –10 −5 S cm −1 at room temperature.…”

Section: Introductionmentioning

confidence: 99%

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Properties of Lithium Trivanadate Film Electrodes Formed on Garnet-Type Oxide Solid Electrolyte by Aerosol Deposition

et al. 2018

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We fabricated lithium trivanadate LiV3O8 (LVO) film electrodes for the first time on a garnet-type Ta-doped Li7La3Zr2O12 (LLZT) solid electrolyte using the aerosol deposition (AD) method. Ball-milled LVO powder with sizes in the range of 0.5–2 µm was used as a raw material for LVO film fabrication via impact consolidation at room temperature. LVO film (thickness = 5 µm) formed by AD has a dense structure composed of deformed and fractured LVO particles and pores were not observed at the LVO/LLZT interface. For electrochemical characterization of LVO film electrodes, lithium (Li) metal foil was attached on the other end face of a LLZT pellet to comprise a LVO/LLZT/Li all-solid-state cell. From impedance measurements, the charge transfer resistance at the LVO/LLZT interface is estimated to be around 103 Ω cm2 at room temperature, which is much higher than at the Li/LLZT interface. Reversible charge and discharge reactions in the LVO/LLZT/Li cell were demonstrated and the specific capacities were 100 and 290 mAh g−1 at 50 and 100 °C. Good cycling stability of electrode reaction indicates strong adhesion between the LVO film electrode formed via impact consolidation and LLZT.

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Properties of Lithium Trivanadate Film Electrodes Formed on Garnet-Type Oxide Solid Electrolyte by Aerosol Deposition

et al. 2018

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“…However, high temperature can give rise to undesirable interfacial chemical compounds resulting from interdiffusion between the two phases . Thus, an alternative fabrication method that works near room temperature is highly desirable in the LIB research field, and AD has been successfully applied to form a thick membrane in ASS‐LIBs, and this membrane was found to perform comparably to 5V‐class bulk‐type composite electrodes . However, no detailed interface structures of ASS‐LIBs fabricated via AD have been reported, partly because such interface structures could be inhomogeneous at the nanometric scale as well as structurally ill‐defined and rich in defects, all of which is problematic for current advanced scanning transmission electron microscopy (STEM) analysis.…”

Section: Introductionmentioning

confidence: 99%

STEM‐EELS analysis of the interface structures of composite ASS‐LIB electrodes fabricated via aerosol deposition

2019

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All‐solid‐state (ASS) lithium‐ion batteries (LIBs) are conventionally fabricated by sintering the component materials at high temperatures. However, interdiffusion between the two phases can give rise to problematic interfacial chemical compounds; therefore, an alternative fabrication method such as aerosol deposition (AD), which works near room temperature, is highly desirable in the ASS‐LIB research field. Herein, we examined the nanometric interface structures of composite ASS‐LIB electrodes fabricated using an AD method, with a particular focus on the structures of Li+‐conductive glass‐ceramic solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP), which we analyzed using a non‐negative matrix factorization technique. We applied this technique to datasets obtained by combined scanning transmission electron microscopy and electron energy loss spectroscopy. The interface structure of a nonannealed composite could not be explained by the main crystal phase of pristine LATP particles or their surface structure, which should reflect a deposition process specific to the AD method. A composite annealed at 400°C exhibited an LATP/LCO interface structure, providing superior contact and possibly improving the electrochemical properties of the ASS‐LIB composite accordingly.

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“…The electrochemical performance for film-shaped electrodes of Si alloy or composite [29,30], tin-phosphide with different compositions [31], transition metal oxides [32,33,34,35,36,37,38,39,40] formed on a metal and a ceramic-based solid electrolyte substrate have been studied to verify the feasibility of AD. Moreover, as-deposited solid electrolyte films show a moderate Li + conductivity of 10 −7 –10 −5 S cm −1 at room temperature [41,42,43,44,45].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Sn4P3–Carbon Composite Films for Lithium-Ion Battery Anode Fabricated by Aerosol Deposition

et al. 2019

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We fabricated tin phosphide–carbon (Sn4P3/C) composite film by aerosol deposition (AD) and investigated its electrochemical performance for a lithium-ion battery anode. Sn4P3/C composite powders prepared by a ball milling was used as raw material and deposited onto a stainless steel substrate to form the composite film via impact consolidation. The Sn4P3/C composite film fabricated by AD showed much better electrochemical performance than the Sn4P3 film without complexing carbon. Although both films showed initial discharge (Li+ extraction) capacities of approximately 1000 mAh g−1, Sn4P3/C films retained higher reversible capacity above 700 mAh g−1 after 100 cycles of charge and discharge processes while the capacity of Sn4P3 film rapidly degraded with cycling. In addition, by controlling the potential window in galvanostatic testing, Sn4P3/C composite film retained the reversible capacity of 380 mAh g−1 even after 400 cycles. The complexed carbon works not only as a buffer to suppress the collapse of electrodes by large volume change of Sn4P3 in charge and discharge reactions but also as an electronic conduction path among the atomized active material particles in the film.

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Properties of garnet-type Li 6 La 3 ZrTaO 12 solid electrolyte films fabricated by aerosol deposition method

Cited by 31 publications

References 40 publications

Properties of Lithium Trivanadate Film Electrodes Formed on Garnet-Type Oxide Solid Electrolyte by Aerosol Deposition

Properties of Lithium Trivanadate Film Electrodes Formed on Garnet-Type Oxide Solid Electrolyte by Aerosol Deposition

STEM‐EELS analysis of the interface structures of composite ASS‐LIB electrodes fabricated via aerosol deposition

Characterization of Sn4P3–Carbon Composite Films for Lithium-Ion Battery Anode Fabricated by Aerosol Deposition

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