Epitaxial Strain-Controlled Ionic Conductivity in Li-Ion Solid Electrolyte Li0.33La0.56TiO3 Thin Films

2015 ◽  
Vol 15 (5) ◽  
pp. 2187-2191 ◽  
Author(s):  
Jie Wei ◽  
Daisuke Ogawa ◽  
Tomoteru Fukumura ◽  
Yasushi Hirose ◽  
Tetsuya Hasegawa
Keyword(s):  
Thin Films ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Epitaxial Strain ◽  
Li Ion

scholarly journals Characterization of thin films of the solid electrolyte LixMg1−2xAl2+xO4 (x = 0, 0.05, 0.15, 0.25)

2015 ◽  
Vol 17 (43) ◽  
pp. 29045-29056 ◽  
Author(s):  
Brecht Put ◽  
Philippe M. Vereecken ◽  
Maarten J. Mees ◽  
Fabio Rosciano ◽  
Iuliana P. Radu ◽  
...  
Keyword(s):  
Thin Films ◽  
Solid Electrolyte ◽  
Li Ion Batteries ◽  
Li Ion

RF-sputtered thin films of spinel LixMg1−2xAl2+xO4 were investigated for use as solid electrolyte in Li-ion batteries.

scholarly journals A New All-Solid-State Lithium-Ion Battery Working without a Separator in an Electrolyte

2018 ◽  
Author(s):  
Seonggyu Cho ◽  
Shinho Kim ◽  
Wonho Kim ◽  
Seok Kim ◽  
Sungsook Ahn
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
System Development ◽  
Lithium Ion ◽  
Internal Resistance ◽  
Li Ion Battery ◽  
Battery Cell ◽  
Metal Anode ◽  
Li Ion

Considering the safety issues of Li ion batteries, all-solid-state polymer electrolyte has been one of the promising solutions. In this point, achieving a Li ion conductivity in the solid state electrolytes comparable to liquid electrolytes (>1 mS/cm) is particularly challenging. Employment of polyethylene oxide (PEO) solid electrolyte has not been not enough in this point due to high crystallinity. In this study, hybrid solid electrolyte (HSE) systems are designed with Li1.3Al0.3Ti0.7(PO4)3(LATP), PEO and Lithium hexafluorophosphate (LiPF6) or Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). Hybrid solid cathode (HSC) is also designed using LATP, PEO and lithium cobalt oxide (LiCoO2, LCO)—lithium manganese oxide (LiMn2O4, LMO). The designed HSE system displays 3.0 × 10−4 S/cm (55 ℃) and 1.8 × 10−3 S/cm (23 ℃) with an electrochemical stability as of 6.0 V without any separation layer introduction. Li metal (anode)/HSE/HSC cell in this study displays initial charge capacity as of 123.4/102.7 mAh/g (55 ℃) and 73/57 mAh/g (25 °C). To these systems, Succinonitrile (SN) has been incorporated as a plasticizer for practical secondary Li ion battery system development to enhance ionic conductivity. The incorporated SN effectively increases the ionic conductivity without any leakage and short-circuits even under broken cell condition. The developed system also overcomes the typical disadvantages of internal resistance induced by Ti ion reduction. In this study, optimized ionic conductivity and low internal resistance inside the Li ion battery cell have been obtained, which suggests a new possibility in the secondary Li ion battery development.

scholarly journals Reduced Sintering Temperatures of Li+ Conductive Li1.3Al0.3Ti1.7(PO4)3 Ceramics

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 408
Author(s):  
Katja Waetzig ◽  
Christian Heubner ◽  
Mihails Kusnezoff
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Cathode Material ◽  
Solid Electrolyte ◽  
Composite Cathode ◽  
Li Ion Batteries ◽  
Promising Candidate ◽  
Composite Cathodes ◽  
Solid State Batteries ◽  
Li Ion

All-solid-state batteries (ASSB) are considered promising candidates for future energy storage and advanced electric mobility. When compared to conventional Li-ion batteries, the substitution of Li-ion conductive, flammable liquids by a solid electrolyte and the application of Li-metal anodes substantially increase safety and energy density. The solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) provides high Li-ion conductivity of about 10−3 S/cm and is considered a highly promising candidate for both the solid electrolyte-separator and the ionically conductive part of the all-solid state composite cathode, consisting of the cathode material, the solid electrolyte, and an electron conductor. Co-sintering of the composite cathode is a sophisticated challenge, because temperatures above 1000 °C are typically required to achieve the maximum ionic conductivity of LATP but provoke reactions with the cathode material, inhibiting proper electrochemical functioning in the ASSB. In the present study, the application of sintering aids with different melting points and their impact on the sinterability and the conductivity of LATP were investigated by means of optical dilatometry and impedance spectroscopy. The microstructure of the samples was analyzed by SEM. The results indicate that the sintering temperature can be reduced below 800 °C while maintaining high ionic conductivity of up to 3.6 × 10−4 S/cm. These insights can be considered a crucial step forward towards enable LATP-based composite cathodes for future ASSB.

Structure and Ionic Conductivity of Lithio-Borate Thin Films

1990 ◽  
Vol 210 ◽  
Author(s):  
P. Dzwonkowski ◽  
M. Eddrief ◽  
C. Julien ◽  
M. Balkanski
Keyword(s):  
Thin Films ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Ionic Conduction ◽  
Complex Impedance ◽  
Oxide System ◽  
Lithium Oxide ◽  
Process Conditions ◽  
Lithium Metaborate ◽  
Evaporation Technique

AbstractThin films of vitreous solid electrolyte in the boron-oxide/lithium oxide system have been grown using a thermal evaporation technique. Solid electrolyte films of composition B2O3-xLi2O with 0.5≤x≤5 are obtained from a mixture of lithium metaborate and lithium oxide in good proportion. Structure and ionic conduction are studied as a function of the glass modifier concentration and process conditions. The structure is investigated by the mid-infrared absorption spectroscopyof films deposited on a silicon wafer. Comparison with bulk materials whose structures are known shows that the films have a similar structure, and exhibit the transformation of boroxol rings into triborate or di-triborate units as the Li2O concentration increases. The ionic conductivity has been studied over wide frequency and temperatureranges using the complex impedance spectroscopy in a sandwiched geometry. The ionic conductivity increases with increasing Li content and exhibits a maximum value for B2O3-3Li2O.

Effects of Substrate Cooling on the Ionic Conductivity of Ta2O5 Solid-Electrolyte Thin Films Prepared by Reactive Sputtering Using H2O Gas

2019 ◽  
Vol 13 (26) ◽  
pp. 55-60 ◽  
Author(s):  
Yoshio Abe ◽  
Fei Peng ◽  
Yasuhiro Takiguchi ◽  
Midori Kawamura ◽  
Katsutaka Sasaki ◽  
...  
Keyword(s):  
Thin Films ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Reactive Sputtering
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