Improved Interface Stability and Room-Temperature Performance of Solid-State Lithium Batteries by Integrating Cathode/Electrolyte and Graphite Coating

2020 ◽  
Vol 12 (13) ◽  
pp. 15120-15127 ◽  
Author(s):  
Hao Chen ◽  
Quan-yao Liu ◽  
Mao-xiang Jing ◽  
Fei Chen ◽  
Wei-yong Yuan ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
Room Temperature ◽  
Interface Stability ◽  
Temperature Performance ◽  
Graphite Coating

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.

Progress and Perspective of All-Solid-State Lithium Batteries with High Performance at Room Temperature

2020 ◽  
Vol 34 (11) ◽  
pp. 13456-13472
Author(s):  
Likun Chen ◽  
Yan-Fei Huang ◽  
Jiabin Ma ◽  
Huajin Ling ◽  
Feiyu Kang ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
High Performance ◽  
Room Temperature

Nanofiber-reinforced polymer electrolytes toward room temperature solid-state lithium batteries

2020 ◽  
Vol 448 ◽  
pp. 227424 ◽  
Author(s):  
Itziar Aldalur ◽  
Xiaoen Wang ◽  
Alexander Santiago ◽  
Nicolas Goujon ◽  
María Echeverría ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Reinforced Polymer
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