scholarly journals Local Li-ion conductivity changes within Al stabilized Li7La3Zr2O12 and their relationship to three-dimensional variations of the bulk composition

2019 ◽  
Vol 7 (12) ◽  
pp. 6818-6831 ◽  
Author(s):  
Stefan Smetaczek ◽  
Andreas Wachter-Welzl ◽  
Reinhard Wagner ◽  
Daniel Rettenwander ◽  
Georg Amthauer ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Chemical Analysis ◽  
Bulk Composition ◽  
Three Dimensional ◽  
Ion Conductivity ◽  
Spatially Resolved ◽  
Li Ion

Investigating conductivity variations in Al stabilized LLZO by combining microelectrode impedance spectroscopy with spatially resolved chemical analysis.

scholarly journals Separating bulk from grain boundary Li ion conductivity in the sol–gel prepared solid electrolyte Li1.5Al0.5Ti1.5(PO4)3

2015 ◽  
Vol 3 (42) ◽  
pp. 21343-21350 ◽  
Author(s):  
Stefan Breuer ◽  
Denise Prutsch ◽  
Qianli Ma ◽  
Viktor Epp ◽  
Florian Preishuber-Pflügl ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Ion Transport ◽  
Solid Electrolyte ◽  
Transport Properties ◽  
Low Temperatures ◽  
Sol Gel ◽  
Ion Conductivity ◽  
Li Ion ◽  
Ceramic Electrolytes

Impedance spectroscopy measurements down to very low temperatures allowed for resolving bulk ion transport properties in highly conducting ceramic electrolytes.

Highly Conjugated Three-Dimensional Covalent Organic Frame- works with Enhanced Li-ion Conductivity as Solid-State Electrolytes for High-Performance Lithium Metal Batteries

2022 ◽  
Author(s):  
Shi Wang ◽  
Xiang-Chun Li ◽  
Tao Cheng ◽  
Yuan-Yuan Liu ◽  
Qiange Li ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
High Performance ◽  
Three Dimensional ◽  
Ion Conductivity ◽  
Covalent Organic Frameworks ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Li Ion ◽  
Solid State Electrolytes

Covalent organic frameworks (COFs) with well-tailored channels have the potential to efficiently transport ions yet remain to be explored. The ion transport capability is generally limited due to the lack...

scholarly journals Garnet to hydrogarnet: effect of post synthesis treatment on cation substituted LLZO solid electrolyte and its effect on Li ion conductivity

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 30283-30294
Author(s):  
Charlotte Fritsch ◽  
Tatiana Zinkevich ◽  
Sylvio Indris ◽  
Martin Etter ◽  
Volodymyr Baran ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Solid Electrolyte ◽  
Strong Dependence ◽  
Ion Conductivity ◽  
Sample Treatment ◽  
Li Ion ◽  
Post Synthesis

Investigation of commercial Li7La3Zr2O12 (LLZO) with various substituents. Although impedance spectroscopy suggests something else: the ion conductivity does not show a strong dependence on the substituting cation, but rather on the sample treatment.

Experimental and theoretical investigation of lithium-ion conductivity in Li2LaNbTiO7

2019 ◽  
Vol 48 (46) ◽  
pp. 17281-17290 ◽  
Author(s):  
Selorm Joy Fanah ◽  
Ming Yu ◽  
Farshid Ramezanipour
Keyword(s):  
Density Functional Theory ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Density Functional ◽  
Electrochemical Impedance ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Functional Theory ◽  
Li Ion ◽  
Lithium Ion Conductivity

Li-ion conductivity in Li2LaNbTiO7 and its Li-deficient analogue has been investigated. Neutron diffraction, electrochemical impedance spectroscopy, and density functional theory have been utilized to study these Ruddlesden-Popper oxides.

Near constant loss regime in fast ionic conductors analyzed by impedance and NMR spectroscopies

2014 ◽  
Vol 16 (29) ◽  
pp. 15346-15354 ◽  
Author(s):  
Wilmer Bucheli ◽  
Kamel Arbi ◽  
Jesús Sanz ◽  
Dmitry Nuzhnyy ◽  
Stanislav Kamba ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Solid Electrolytes ◽  
Ion Conductivity ◽  
Ionic Conductors ◽  
Fast Ionic Conductors ◽  
Li Ion

Broadband impedance spectroscopy and NMR measurements experimentally prove that strong near constant loss contribution to the conductivity is not mandatory to present the highest Li ion conductivity in solid electrolytes.

scholarly journals Three-dimensional clusters of peony-shaped CuO nanosheets as a high-rate anode for Li-ion batteries

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10760-10766
Author(s):  
Lin Hu ◽  
Zhong Yang ◽  
Hulin Li ◽  
Xiao Yang ◽  
Jianping Li ◽  
...  
Keyword(s):  
Volume Expansion ◽  
Three Dimensional ◽  
Ion Conductivity ◽  
High Rate ◽  
Electrochemical Performances ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Cuo Nanosheets

TCP-CuO possesses a unique three-dimensional peony-liked architecture which not only alleviates volume expansion problem, but also enhances electron/ion conductivity. As an anode in LIBs, TCP-CuO delivers excellent electrochemical performances.

Rationally Designed Three-Dimensional Porous Nico 2n@C Reticular Structure for High-Performance Li-Ion Batteries

2020 ◽  
Author(s):  
Peiyao Wang ◽  
Bangchuan Zhao ◽  
Jin Bai ◽  
Kunzhen Li ◽  
Hongyang Ma ◽  
...  
Keyword(s):  
High Performance ◽  
Three Dimensional ◽  
Li Ion Batteries ◽  
Reticular Structure ◽  
Li Ion

scholarly journals Upscaling of LATP synthesis: Stoichiometric screening of phase purity and microstructure to ionic conductivity maps

Ionics ◽  
2021 ◽  
Vol 27 (5) ◽  
pp. 2017-2025
Author(s):  
Nikolas Schiffmann ◽  
Ethel C. Bucharsky ◽  
Karl G. Schell ◽  
Charlotte A. Fritsch ◽  
Michael Knapp ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Sol Gel ◽  
Ion Conductivity ◽  
Process Window ◽  
Lithium Aluminum ◽  
Potential Candidate ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Battery Cell ◽  
Li Ion

AbstractLithium aluminum titanium phosphate (LATP) is known to have a high Li-ion conductivity and is therefore a potential candidate as a solid electrolyte. Via sol-gel route, it is already possible to prepare the material at laboratory scale in high purity and with a maximum Li-ion conductivity in the order of 1·10−3 s/cm at room temperature. However, for potential use in a commercial, battery-cell upscaling of the synthesis is required. As a first step towards this goal, we investigated whether the sol-gel route is tolerant against possible deviations in the concentration of the precursors. In order to establish a possible process window for sintering, the temperature interval from 800 °C to 1100 °C and holding times of 10 to 480 min were evaluated. The resulting phase compositions and crystal structures were examined by X-ray diffraction. Impedance spectroscopy was performed to determine the electrical properties. The microstructure of sintered pellets was analyzed by scanning electron microscopy and correlated to both density and ionic conductivity. It is shown that the initial concentration of the precursors strongly influences the formation of secondary phases like AlPO4 and LiTiOPO4, which in turn have an influence on ionic conductivity, densification behavior, and microstructure evolution.

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