Lithium Argyrodite Sulfide Electrolytes with High Ionic Conductivity and Air Stability for All-Solid-State Li-Ion Batteries

ABSTRACTGarnet-type electrolytes are currently receiving much attention for applications in Li-ion batteries, as they possess high ionic conductivity and chemical stability. Doping the garnet structure has proved to be a good way to improve the Li ion conductivity and stability. The present study includes effects of Y- doping in Li5La3Nb2O12 on Li ion conductivity and stability of “Li5+2xLa3Nb2-xYxO12” (0.05 ≤ x ≤ 0.75) under various environments, as well as chemical stability studies of Li5+xBaxLa3-xM2O12 (M = Nb, Ta) in water. “Li6.5La3Nb1.25Y0.75O12” showed a very high ionic conductivity of 2.7 х 10−4 Scm−1 at 25 °C, which is comparable to the highest value reported for garnet-type compounds, e.g., Li7La3Zr2O12. The selected members show very good stability against high temperatures, water, Li battery cathode Li2CoMn3O8 and carbon. The Li5+xBaxLa3-xNb2O12 garnets have shown to readily undergo an ion-exchange (proton) reaction under water treatment at room temperature; however, the Ta-based garnet appears to exhibit considerably higher stability under the same conditions.

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Near ideal synaptic functionalities in Li ion synaptic transistor using Li3POxSex electrolyte with high ionic conductivity

Scientific Reports ◽

10.1038/s41598-019-55310-8 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 10

Author(s):

Revannath Dnyandeo Nikam ◽

Myonghoon Kwak ◽

Jongwon Lee ◽

Krishn Gopal Rajput ◽

Writam Banerjee ◽

...

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Ionic Conduction ◽

Lithium Ion ◽

High Ionic Conductivity ◽

Ion Migration ◽

Conductance Switching ◽

Device Development ◽

Artificial Synapse ◽

Li Ion

AbstractAll solid-state lithium-ion transistors are considered as promising synaptic devices for building artificial neural networks for neuromorphic computing. However, the slow ionic conduction in existing electrolytes hinders the performance of lithium-ion-based synaptic transistors. In this study, we systematically explore the influence of ionic conductivity of electrolytes on the synaptic performance of ionic transistors. Isovalent chalcogenide substitution such as Se in Li3PO4 significantly reduces the activation energy for Li ion migration from 0.35 to 0.253 eV, leading to a fast ionic conduction. This high ionic conductivity allows linear conductance switching in the LiCoO2 channel with several discrete nonvolatile states and good retention for both potentiation and depression steps. Consequently, optimized devices demonstrate the smallest nonlinearity ratio of 0.12 and high on/off ratio of 19. However, Li3PO4 electrolyte (with lower ionic conductivity) shows asymmetric and nonlinear weight-update characteristics. Our findings show that the facilitation of Li ionic conduction in solid-state electrolyte suggests potential application in artificial synapse device development.

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

Crystals ◽

10.3390/cryst10050408 ◽

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.

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A renewable membrane with high ionic conductivity and thermal stability for Li-ion batteries

Journal of Power Sources ◽

10.1016/j.jpowsour.2021.230947 ◽

2022 ◽

Vol 521 ◽

pp. 230947

Author(s):

Amin Liu ◽

Shiyue Li ◽

Zhenyu Jiang ◽

Jian Du ◽

Yehan Tao ◽

...

Keyword(s):

Thermal Stability ◽

Ionic Conductivity ◽

High Ionic Conductivity ◽

Li Ion Batteries ◽

Li Ion

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Enhancement of ionic conductivity of a composite polymer electrolyte via surface functionalization of SSZ-13 zeolite for all-solid-state Li-ion batteries

Journal of Materials Chemistry A ◽

10.1039/d0ta11218f ◽

2021 ◽

Author(s):

Jae Hyun Kim ◽

Hasan Jamal ◽

Firoz Khan ◽

Suyeon Hyun ◽

Sang Won Min

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Polymer Electrolyte ◽

Surface Functionalization ◽

Liquid Electrolyte ◽

Composite Polymer Electrolyte ◽

Li Ion Batteries ◽

Composite Polymer ◽

Safety Issues ◽

Li Ion

To mitigate the safety issues of liquid electrolyte-based Li-ion batteries, there is a growing interest in the development of solid-state electrolytes (SSEs) based Li-metal batteries. Regrettably, most SSEs have low...

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Correlation of Mechanical and Electrical Behavior of Polyethylene Oxide-Based Solid Electrolytes for All-Solid State Lithium-Ion Batteries

Batteries ◽

10.3390/batteries5010026 ◽

2019 ◽

Vol 5 (1) ◽

pp. 26 ◽

Cited By ~ 2

Author(s):

Fabian Peters ◽

Frederieke Langer ◽

Nikolai Hillen ◽

Katharina Koschek ◽

Ingo Bardenhagen ◽

...

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Mechanical Strength ◽

Solid Electrolytes ◽

Large Scale ◽

Lithium Ion ◽

Scale Production ◽

Li Ion Batteries ◽

Scanning Calorimetry ◽

Li Ion

Mechanical and electrochemical stability are key issues for large-scale production of solid state Li-ion batteries. Polymer electrolytes can provide good ionic conductivity, but mechanical strength needs to be improved. In this study, we investigate the correlation of mechanical and electrical properties of poly (ethylene oxide) (PEO)-based solid electrolytes for Li-ion batteries. The influence of alumina and LiClO4 addition are investigated. Differential scanning calorimetry (DSC) is used to study the thermal behavior of salt-free and salt-containing samples and to identify the melting temperature. Dynamic mechanical analysis reveals the elastic properties as a function of temperature. Electrochemical properties are investigated using impedance spectroscopy. It is found that addition of alumina increases mechanical strength, while LiClO4 decreases it. Addition of LiClO4 and Al2O3 increases ionic conductivity and improves mechanical properties. However, there is no overlapping window of high mechanical strength and high ionic conductivity.

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Synthesis and Ionic Conductivity Studies of In- and Y-Doped Li6Hf2O7as Solid-State Electrolyte for All-Solid State Li-Ion Batteries

Journal of The Electrochemical Society ◽

10.1149/2.06011701jes ◽

2017 ◽

Vol 164 (1) ◽

pp. A6395-A6400 ◽

Cited By ~ 4

Author(s):

M. Amores ◽

S. A. Corr ◽

E. J. Cussen

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Li Ion Batteries ◽

Solid State Electrolyte ◽

Li Ion

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Theoretical design of solid electrolytes with superb ionic conductivity: alloying effect on Li+ transportation in cubic Li6PA5X chalcogenides

Journal of Materials Chemistry A ◽

10.1039/c7ta06986c ◽

2017 ◽

Vol 5 (41) ◽

pp. 21846-21857 ◽

Cited By ~ 30

Author(s):

Zhuo Wang ◽

Guosheng Shao

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Solid Electrolytes ◽

Li Ion Batteries ◽

Alloying Effect ◽

Flammable Liquid ◽

Organic Electrolytes ◽

Safety Issues ◽

Theoretical Design ◽

Li Ion

It is of great importance to develop solid inorganic electrolytes with high ionic conductivity, which would thus enable solid-state Li-ion batteries to overcome the notorious safety issues with the current technology due to the use of highly flammable liquid organic electrolytes.

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Material Design Strategy for Halide Solid Electrolytes Li3MX6 (X = Cl, Br, and I) for All-Solid-State High-Voltage Li-Ion Batteries

Chemistry of Materials ◽

10.1021/acs.chemmater.1c00555 ◽

2021 ◽

Author(s):

Kwangnam Kim ◽

Dongsu Park ◽

Hun-Gi Jung ◽

Kyung Yoon Chung ◽

Joon Hyung Shim ◽

...

Keyword(s):

Solid State ◽

High Voltage ◽

Solid Electrolytes ◽

Material Design ◽

Design Strategy ◽

Li Ion Batteries ◽

Li Ion

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Study on Li0.33La0.55TiO3 Solid Electrolyte with High Ionic Conductivity and Its Application in Flexible All Solid-State Battery

Nanoscale ◽

10.1039/d1nr02427b ◽

2021 ◽

Author(s):

Feihu Tan ◽

Hua An ◽

Ning Li ◽

Jun Du ◽

Zhengchun Peng

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Solid Electrolyte ◽

High Ionic Conductivity ◽

Energy Sources ◽

Solid State Battery ◽

Solid State Batteries ◽

All Solid State Batteries

As flexible all-solid-state batteries are highly safe and lightweight, they can be considered as candidates for wearable energy sources. However, their performance needs to be first improved, which can be...

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