Garnet-type Li7La3Zr2O12 Electrolyte Prepared by a Solution-Based Technique for Lithium ion battery

2012 ◽  
Vol 1440 ◽  
Author(s):  
Jiajia Tan ◽  
Ashutosh Tiwari
Keyword(s):  
Ionic Conductivity ◽  
Tetragonal Phase ◽  
Lithium Ion ◽  
Superior Performance ◽  
Cubic Phase ◽  
Lithium Metal ◽  
High Quality ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
The One

ABSTRACTHigh quality garnet-type Li7La3Zr2O12 solid electrolyte was synthesized using a solution-based technique. The electrolyte pellets were sintered at 900 oC, resulting in tetragonal phase, which then transformed to cubic phase after annealing at 1230 oC. The ionic conductivity of both phases was studied and revealed to be 3.67x10-7 S/cm and 1.67×10-4 S/cm, respectively. A proto-type cell comprising of Li7La3Zr2O12 electrolyte, LiCoO2 cathode and lithium metal anode was assembled. The cell made with the cubic phase electrolyte exhibited superior performance than the one made with the tetragonal phase electrolyte. The former cell possessed a very promising gravimetric discharge capacity of 3.4 mAh/g, which is the highest value obtained among similar setups.

scholarly journals Non-fluorinated non-solvating cosolvent enabling superior performance of lithium metal anode battery

2021 ◽  
Author(s):  
Jun yeob Moon ◽  
Dong Ok Kim ◽  
Lieven Bekaert ◽  
Munsoo Song ◽  
Jinkyu Chung ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Superior Performance ◽  
Critical Parameters ◽  
Design Rule ◽  
Resonance Spectroscopy ◽  
Energy Calculation ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode

Abstract Lithium–ion solvation governs the performance of lithium metal anode (LMA) by tuning its interfacial stability. Solvation degree is modulated by adopting fluorinated non-solvating cosolvents (FNSC) to induce anion-rich solvation structure which is beneficial in constructing mechanically stable interface to suppress lithium dendrite. However, FNSC exhibits low cathodic stability owing to their low lowest unoccupied molecular orbital (LUMO) level, aggravating long-term cycling of LMA. We establish that spectroscopically measured Lewis basicity and polarity are critical parameters for designing optimal non-solvating cosolvents. Non-fluorinated non-solvating cosolvents (NFNSC) proposed by our design rule (i.e. anisole, ethoxybenzene and furan) delivered 99.0 % coulombic efficiency over 1400 cycles. In these molecules, the aromatic ring delocalizes oxygen electron pairs and lowers solvation capability, confirmed by electrochemical cycling, Raman spectroscopy, and DFT binding energy calculation. Finally, the quantification of remaining NFNSC in the electrolytes using nuclear magnetic resonance spectroscopy proves their reductive stability for extended cycles.

scholarly journals A Lithium‐Ion Pump Based on Piezoelectric Effect for Improved Rechargeability of Lithium Metal Anode

2019 ◽  
Vol 6 (22) ◽  
pp. 1901120 ◽  
Author(s):  
Jingwei Xiang ◽  
Zexiao Cheng ◽  
Ying Zhao ◽  
Bao Zhang ◽  
Lixia Yuan ◽  
...  
Keyword(s):  
Piezoelectric Effect ◽  
Lithium Ion ◽  
Ion Pump ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode

scholarly journals Remedies to Avoid Failure Mechanisms of Lithium-Metal Anode in Li-Ion Batteries

Inorganics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 5
Author(s):  
Alain Mauger ◽  
Christian M. Julien
Keyword(s):  
Failure Modes ◽  
Solid Electrolyte Interphase ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Ex Situ ◽  
Side Reactions ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
Power And Energy

Rechargeable lithium-metal batteries (LMBs), which have high power and energy density, are very attractive to solve the intermittence problem of the energy supplied either by wind mills or solar plants or to power electric vehicles. However, two failure modes limit the commercial use of LMBs, i.e., dendrite growth at the surface of Li metal and side reactions with the electrolyte. Substantial research is being accomplished to mitigate these drawbacks. This article reviews the different strategies for fabricating safe LMBs, aiming to outperform lithium-ion batteries (LIBs). They include modification of the electrolyte (salt and solvents) to obtain a highly conductive solid–electrolyte interphase (SEI) layer, protection of the Li anode by in situ and ex situ coatings, use of three-dimensional porous skeletons, and anchoring Li on 3D current collectors.

Promoting a highly stable lithium metal anode by superficial alloying with an ultrathin indium sheet

2019 ◽  
Vol 55 (11) ◽  
pp. 1592-1595 ◽  
Author(s):  
Bin Sun ◽  
Jialiang Lang ◽  
Kai Liu ◽  
Naveed Hussain ◽  
Minghao Fang ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode

A hybrid anode demonstrates an enhanced ionic conductivity and realizes the uniform lithium electrodeposition with dendrite suppression.

Formation of Stable Interphase of Polymer-in-Salt Electrolyte in All-Solid-State Lithium Batteries

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Hongcai Gao ◽  
Nicholas S. Grundish ◽  
Yongjie Zhao ◽  
Aijun Zhou ◽  
John B. Goodenough
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Lithium Metal ◽  
Practical Utilization ◽  
Metal Anode ◽  
Lithium Metal Anode

The integration of solid-polymer electrolytes into all-solid-state lithium batteries is highly desirable to overcome the limitations of current battery configurations that have a low energy density and severe safety concerns. Polyacrylonitrile is an appealing matrix for solid-polymer electrolytes; however, the practical utilization of such polymer electrolytes in all-solid-state cells is impeded by inferior ionic conductivity and instability against a lithium-metal anode. In this work, we show that a polymer-in-salt electrolyte based on polyacrylonitrile with a lithium salt as the major component exhibits a wide electrochemically stable window, a high ionic conductivity, and an increased lithium-ion transference number. The growth of dendrites from the lithium-metal anode was suppressed effectively by the polymer-in-salt electrolyte to increase the safety features of the batteries. In addition, we found that a stable interphase was formed between the lithium-metal anode and the polymer-in-salt electrolyte to restrain the uncontrolled parasitic reactions, and we demonstrated an all-solid-state battery configuration with a LiFePO4 cathode and the polymer-in-salt electrolyte, which exhibited a superior cycling stability and rate capability.

Carbon-rich Conjugated Framework PTEB Modified Cu Nanowires for Stabilizing Lithium Metal Anode

2021 ◽  
Author(s):  
Shan Yang ◽  
Ru Xiao ◽  
Tongwei Zhang ◽  
Yuan Li ◽  
Benhe Zhong ◽  
...  
Keyword(s):  
Energy Density ◽  
Dendritic Growth ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Metal Anode ◽  
Cu Nanowires ◽  
Lithium Metal Anode

Lithium metal anode provides a direction for the development of high-energy-density lithium ion batteries. In order to solve lithium dendritic growth and low Coulombic efficiency in lithium plating/stripping process, designing...

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