Lithium migration pathways at the composite interface of LiBH4 and two-dimensional MoS2 enabling superior ionic conductivity at room temperature

2020 ◽  
Vol 22 (7) ◽  
pp. 4096-4105 ◽  
Author(s):  
Zhixiang Liu ◽  
Mengyuan Xiang ◽  
Yao Zhang ◽  
Huaiyu Shao ◽  
Yunfeng Zhu ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Dft Calculations ◽  
Room Temperature ◽  
Ion Conductivity ◽  
Two Dimensional ◽  
Composite Interface ◽  
Li Ion ◽  
Migration Pathways ◽  
Lithium Migration

A novel interface with high Li-ion conductivity has been formulated and the results have been verified by DFT calculations.

Materials for All-Solid-State Lithium Ion Batteries

2013 ◽  
Vol 1496 ◽  
Author(s):  
Sumaletha Narayanan ◽  
Lina Truong ◽  
Venkataraman Thangadurai
Keyword(s):  
Ionic Conductivity ◽  
Chemical Stability ◽  
Room Temperature ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
High Ionic Conductivity ◽  
Li Ion Batteries ◽  
Li Battery ◽  
Li Ion ◽  
Very High

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.

Enhanced room temperature ionic conductivity of the LiBH4·1/2NH3–Al2O3 composite

2021 ◽  
Author(s):  
Ruixue Zhang ◽  
Wanying Zhao ◽  
Zhenzhen Liu ◽  
Shanghai Wei ◽  
Yigang Yan ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Room Temperature ◽  
Ion Conductivity ◽  
Al2o3 Composite

In situ formed amorphous LiBH4·1/2NH3 on the surface of Al2O3 nanoparticles results in an enhanced ion conductivity of 1.1 × 10−3 S cm−1 at room temperature.

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.

scholarly journals Contribution Succinonitrile additive for Performa LiTFSi Solid Polymer Electrolytes for Li-Ion Battery

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Qolby Sabrina ◽  
Titik Lestariningsih ◽  
Christin Rina Ratri ◽  
Achmad Subhan
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Lithium Salt ◽  
Ionic Conduction ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Half Cell ◽  
Li Ion

Solid polymer electrolyte (SPE) appropriate to solve packaging leakage and expansion volume in lithium-ion battery systems. Evaluation of electrochemical performance of SPE consisted of mixture lithium salt, solid plasticizer, and polymer precursor with different ratio. Impedance spectroscopy was used to investigate ionic conduction and dielectric response lithium bis(trifluoromethane)sulfony imide (LiTFSI) salt, and additive succinonitrile (SCN) plasticizer. The result showing enhanced high ionic conductivity. In half-cell configurations, wide electrochemical stability window of the SPE has been tested. Have stability window at room temperature, indicating great potential of SPE for application in lithium ion batteries. Additive SCN contribute to forming pores that make it easier for the li ion to move from the anode to the cathode and vice versa for better perform SPE. Pore of SPE has been charaterization with FE-SEM. Additive 5% w.t SCN shows the best ionic conductivity with 4.2 volt wide stability window and pretty much invisible pores.

scholarly journals The effect of nanoscaffold porosity and surface chemistry on the Li-ion conductivity of LiBH4–LiNH2/metal oxide nanocomposites

2020 ◽  
Vol 8 (39) ◽  
pp. 20687-20697
Author(s):  
Laura M. de Kort ◽  
Justine Harmel ◽  
Petra E. de Jongh ◽  
Peter Ngene
Keyword(s):  
Ionic Conductivity ◽  
Metal Oxide ◽  
Surface Chemistry ◽  
Ion Conductivity ◽  
Li Ion

Tuning the ionic conductivity of LiBH4–LiNH2/oxide nanocomposites by controlling the surface chemistry as well as the porosity of the metal oxide nanoscaffold materials.

scholarly journals A new family of cation-disordered Zn(Cu)–Si–P compounds as high-performance anodes for next-generation Li-ion batteries

2019 ◽  
Vol 12 (7) ◽  
pp. 2286-2297 ◽  
Author(s):  
Wenwu Li ◽  
Xinwei Li ◽  
Jun Liao ◽  
Bote Zhao ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Dft Calculations ◽  
Volume Change ◽  
High Performance ◽  
Experimental Measurements ◽  
Li Ion Batteries ◽  
Storage Performance ◽  
New Family ◽  
Li Ion ◽  
Li Storage

Cation-disordered Zn(Cu)–Si–P family materials demonstrate better Li-storage performance than the cation-ordered ZnSiP2 phase due largely to faster electronic and ionic conductivity and better tolerance to volume change during cycling, as confirmed by DFT calculations and experimental measurements.

Li+-ion conductivity of BPO4–Li2O; the relation between crystal structure and ionic conductivity

1999 ◽  
Vol 119 (1-4) ◽  
pp. 159-164 ◽  
Author(s):  
M.J.G. Jak ◽  
E.M. Kelder ◽  
Z.A. Kaszkur ◽  
J. Pielaszek ◽  
J. Schoonman
Keyword(s):  
Crystal Structure ◽  
Ionic Conductivity ◽  
Ion Conductivity ◽  
Li Ion

scholarly journals Sodium Ion Conductivity in Superionic IL-Impregnated Metal-Organic Frameworks: Enhancing Stability Through Structural Disorder

2019 ◽  
Author(s):  
Vahid Nozari ◽  
Courtney Calahoo ◽  
Joshua M. Tuffnell ◽  
Philipp Adelhelm ◽  
Katrin Wondraczek ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Ambient Air ◽  
Ion Conductivity ◽  
Sodium Ion ◽  
Composite Electrolytes ◽  
Ion Conduction ◽  
General Importance ◽  
Metal Organic

<p>Metal—organic frameworks (MOFs) are intriguing host materials in composite electrolytes due to their ability for tailoring host-guest interactions by chemical tuning of the MOF backbone. Here, we introduce particularly high sodium ion conductivity into the zeolitic imidazolate framework ZIF-8 by impregnation with the sodium-salt-containing ionic liquid (IL) (Na0.1¬EMIM0.9)TFSI. We demonstrate an ionic conductivity exceeding 2×10-4 S ⋅cm-1 at room temperature, with an activation energy as low as 0.26 eV, i.e., the highest reported performance for room temperature Na+-related ion conduction in MOF-based composite electrolytes to date. Partial amorphization of the ZIF-backbone by ball-milling results in significant enhancement of the composite stability, reflecting in persistent and stable ionic conductivity during exposure to ambient air over up to 20 days. While the introduction of network disorder decelerates IL exudation and interactions with ambient contaminants, the ion conductivity is only marginally affected, decreasing linearly with decreasing crystallinity but still maintaining superionic behavior. This highlights the general importance of 3D networks of interconnected pores for efficient ion conduction in MOF/IL blends, whereas pore symmetry is a presumably less stringent condition.</p>

scholarly journals Blend Hybrid Solid Electrolytes Based on LiTFSI Doped Silica-Polyethylene Oxide for Lithium-Ion Batteries

Membranes ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 109 ◽  
Author(s):  
Jadra Mosa ◽  
Jonh Fredy Vélez ◽  
Mario Aparicio
Keyword(s):  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Sol Gel ◽  
Lithium Ion ◽  
Hybrid Structure ◽  
Hybrid Network ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Sol Gel Synthesis

Organic/inorganic hybrid membranes that are based on GTT (GPTMS-TMES-TPTE) system while using 3-Glycidoxypropyl-trimethoxysilane (GPTMS), Trimethyletoxisilane (TMES), and Trimethylolpropane triglycidyl ether (TPTE) as precursors have been obtained while using a combination of organic polymerization and sol-gel synthesis to be used as electrolytes in Li-ion batteries. Self-supported materials and thin-films solid hybrid electrolytes that were doped with Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) were prepared. The hybrid network is based on highly cross-linked structures with high ionic conductivity. The dependency of the crosslinked hybrid structure and polymerization grade on ionic conductivity is studied. Ionic conductivity depends on triepoxy precursor (TPTE) and the accessibility of Li ions in the organic network, reaching a maximum ionic conductivity of 1.3 × 10−4 and 1.4 × 10−3 S cm−1 at room temperature and 60 °C, respectively. A wide electrochemical stability window in the range of 1.5–5 V facilitates its use as solid electrolytes in next-generation of Li-ion batteries.

Decoupling effective Li+ ion conductivity from electrolyte viscosity for improved room-temperature cell performance

2017 ◽  
Vol 342 ◽  
pp. 335-341 ◽  
Author(s):  
Guinevere A. Giffin ◽  
Arianna Moretti ◽  
Sangsik Jeong ◽  
Stefano Passerini
Keyword(s):  
Room Temperature ◽  
Ion Conductivity ◽  
Cell Performance ◽  
Li Ion
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