Improved ionic conductivity for amide-contained electrolytes by tuning intermolecular interaction: effect of branched side-chains with cyanoethoxy groups

2021 ◽  
Author(s):  
Koki Yamada ◽  
Shohei Yuasa ◽  
Riho Matsuoka ◽  
Ryansu Sai ◽  
Yu Katayama ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Intermolecular Interaction ◽  
Interaction Effect ◽  
Lithium Batteries ◽  
Polymeric Materials ◽  
Side Chains ◽  
Long Cycle ◽  
Secondary Lithium Batteries ◽  
Power Densities

Polymeric materials are considered as promising electrolytes for all-solid-state secondary lithium batteries with superior energy and power densities, long cycle lives, and safety. To further improve the ionic conductivity of...

Kinetically Stable Anode Interface for Li3YCl6-Based All-Solid-State Lithium Batteries

2021 ◽  
Author(s):  
Weixiao Ji ◽  
Dong Zheng ◽  
Xiaoxiao Zhang ◽  
Tianyao Ding ◽  
Deyang Qu
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Oxidative Stability ◽  
Lithium Batteries ◽  
Solid Electrolytes ◽  
Metal Anode ◽  
Li Metal Anode

Despite excellent ionic conductivity and electrochemical oxidative stability, the emerging halide-based solid electrolytes suffer from inherent instability toward Li metal anode. A thick and resistive interface can be formed by...

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.

3D Coral-like LLZO/PVDF Composite Electrolytes with Enhanced Ionic Conductivity and Mechanical Flexibility for Solid-State Lithium Batteries

2020 ◽  
Vol 12 (47) ◽  
pp. 52652-52659
Author(s):  
Mengjun Wu ◽  
Dan Liu ◽  
Deyu Qu ◽  
Zhizhong Xie ◽  
Junsheng Li ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Lithium Batteries ◽  
Composite Electrolytes

scholarly journals New Series of Ternary Metal Chloride Superionic Conductors for High Performance All-Solid-State Lithium Batteries

2021 ◽  
Author(s):  
Jianwen Liang ◽  
Eveline van der Maas ◽  
Jing Luo ◽  
Xiaona Li ◽  
Ning Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Lithium Batteries ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Ionic Conductivities ◽  
Orthorhombic Phase ◽  
Superionic Conductors ◽  
Orthorhombic Structure ◽  
Trigonal Structure

Abstract Understanding the relationship between structure, ionic conductivity, and synthesis is the key to the development of solid electrolytes for all-solid-state Lithium batteries. Here, we investigate chloride solid electrolytes with compositions Li3 − 3xM1+xCl6 (-0.14 < x ≤ 0.5, M = Tb, Dy, Ho, Y, Er, Tm). When x > 0.04, a trigonal to orthorhombic phase transition occurs in the isostructural Li-Dy-Cl, Li-Ho-Cl, Li-Y-Cl, Li-Er-Cl and Li-Tm-Cl solid electrolytes. The new orthorhombic phase shows a four-fold increase in ionic conductivity up to 1.3×10− 3 S cm− 1 at room temperature for Li2.73Ho1.09Cl6 (x = 0.09) when compared to the trigonal Li3HoCl6. For isostructural Li-Dy-Cl, Li-Y-Cl, Li-Er-Cl and Li-Tm-Cl solid electrolytes, about one order of magnitude increase in ionic conductivities are observed for the orthorhombic structure compared to the trigonal structure. Using the Li-Ho-Cl components as an example, detailed studies of its structure, phase transition, ionic conductivity, air stability and electrochemical stability have been made. Molecular dynamics simulations based on density functional theory reveal that the different cations arrangement in the orthorhombic structure leads to a higher lithium diffusivity as compared to the trigonal structure, rationalizing the improved ionic conductivities of the new Li-M-Cl electrolytes. All-solid-state batteries of In/Li2.73Ho1.09Cl6/NMC811 demonstrate excellent electrochemical performance at both room temperature and − 10°C. As relevant to the vast number of isostructural halide electrolytes, the present structure control strategy provides guidance for the design of novel halide superionic conductors.

All-solid-state lithium batteries with long cycle life

Matter ◽  
2021 ◽  
Vol 4 (12) ◽  
pp. 3797-3799
Author(s):  
Xiangtao Bai
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
Cycle Life ◽  
Long Cycle ◽  
Long Cycle Life

A highly elastic and flexible solid-state polymer electrolyte based on ionic liquid-decorated PMMA nanoparticles for lithium batteries

2017 ◽  
Vol 41 (21) ◽  
pp. 13096-13103 ◽  
Author(s):  
Yang Li ◽  
Ka Wai Wong ◽  
Qianqian Dou ◽  
Wei Zhang ◽  
Lixiang Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Lithium Batteries ◽  
Lithium Ion ◽  
Transference Number ◽  
Lithium Ion Transference Number ◽  
Electrochemical Window

The highly elastic and flexible solid-state polymer electrolyte exhibits enhanced ionic conductivity, an enhanced lithium ion transference number and a wide electrochemical window.

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