scholarly journals Ultra-stable all-solid-state sodium-metal batteries enabled by perfluoropolyether-based electrolytes

2021 ◽  
Author(s):  
Xiaoen WANG ◽  
Cheng Zhang ◽  
Michal Sawczyk ◽  
Qinghong Yuan ◽  
Fangfang Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Block Copolymer ◽  
Elevated Temperatures ◽  
High Current Density ◽  
Low Cost ◽  
High Capacity ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer

Abstract Rechargeable batteries paired with sodium (Na)-metal anodes are considered as one of the most promising high energy and low-cost energy storage systems. However, the use of highly reactive Na metal and the formation of Na dendrites during battery operation have caused significant safety concerns, especially when highly flammable liquid electrolytes are used. Herein, we design and develop a solvent-free solid polymer electrolytes (SPEs) based on a perfluoropolyether (PFPE) terminated polyethylene glycol (PEG)-based block copolymer for safe and stable all-solid-state Na-metal batteries. Compared with traditional poly(ethylene oxide) (PEO) or PEG SPEs, our results suggest that block copolymer design allows for the formation of self-assembled microstructures leading to high storage modulus at elevated temperatures with the PEG domains providing transport channels even at high salt concentration (EO/Na+ = 8:2). Moreover, it is demonstrated that the incorporation of PFPE segments enhances the Na+ transference number of the electrolyte to 0.46 at 80 oC. Finally, the proposed SPE exhibits highly stable symmetric cell cycling performance with high current density (0.5 mA cm-2 and 1.0 mAh cm-2, up to 1300 hours). The assembled all-solid-state Na-metal batteries with Na3V2(PO4)3 cathode demonstrate outstanding rate performance, high capacity retention and long-term charge/discharge stability (CE = 99.91%) after more than 900 cycles.

scholarly journals Ultra-stable all-solid-state sodium-metal batteries enabled by perfluoropolyether-based electrolytes

2021 ◽  
Author(s):  
Xiaoen WANG ◽  
Cheng Zhang ◽  
Michal Sawczyk ◽  
Qinghong Yuan ◽  
Fangfang Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Block Copolymer ◽  
Elevated Temperatures ◽  
High Current Density ◽  
Low Cost ◽  
High Capacity ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer

Abstract Rechargeable batteries paired with sodium (Na)-metal anodes are considered as one of the most promising high energy and low-cost energy storage systems. However, the use of highly reactive Na metal and the formation of Na dendrites during battery operation have caused significant safety concerns, especially when highly flammable liquid electrolytes are used. Herein, we design and develop a solvent-free solid polymer electrolytes (SPEs) based on a perfluoropolyether (PFPE) terminated polyethylene glycol (PEG)-based block copolymer for safe and stable all-solid-state Na-metal batteries. Compared with traditional poly(ethylene oxide) (PEO) or PEG SPEs, our results suggest that block copolymer design allows for the formation of self-assembled microstructures leading to high storage modulus at elevated temperatures with the PEG domains providing transport channels even at high salt concentration (EO/Na+ = 8:2). Moreover, it is demonstrated that the incorporation of PFPE segments enhances the Na+ transference number of the electrolyte to 0.46 at 80 oC. Finally, the proposed SPE exhibits highly stable symmetric cell cycling performance with high current density (0.5 mA cm-2 and 1.0 mAh cm-2, up to 1300 hours). The assembled all-solid-state Na-metal batteries with Na3V2(PO4)3 cathode demonstrate outstanding rate performance, high capacity retention and long-term charge/discharge stability (CE = 99.91%) after more than 900 cycles.

scholarly journals Comprehensive Review of Polymer Architecture for All-Solid-State Lithium Rechargeable Batteries

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2488 ◽  
Author(s):  
Xuewei Zhang ◽  
Jean-Christophe Daigle ◽  
Karim Zaghib
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Solid Polymer Electrolytes ◽  
Polymer Materials ◽  
High Energy Density ◽  
Solid Polymer ◽  
Mechanical Resistance ◽  
Polymer Architecture

Solid-state batteries are an emerging option for next-generation traction batteries because they are safe and have a high energy density. Accordingly, in polymer research, one of the main goals is to achieve solid polymer electrolytes (SPEs) that could be facilely fabricated into any preferred size of thin films with high ionic conductivity as well as favorable mechanical properties. In particular, in the past two decades, many polymer materials of various structures have been applied to improve the performance of SPEs. In this review, the influences of polymer architecture on the physical and electrochemical properties of an SPE in lithium solid polymer batteries are systematically summarized. The discussion mainly focuses on four principal categories: linear, comb-like, hyper-branched, and crosslinked polymers, which have been widely reported in recent investigations as capable of optimizing the balance between mechanical resistance, ionic conductivity, and electrochemical stability. This paper presents new insights into the design and exploration of novel high-performance SPEs for lithium solid polymer batteries.

A Lithiated Organic Nanofiber-Reinforced Composite Polymer Electrolyte Enabling Li-ion Conduction Highways for Solid-State Lithium Metal Batteries

2021 ◽  
Author(s):  
Liying Tian ◽  
Ying Liu ◽  
Zhe Su ◽  
Yu Cao ◽  
Wanyu Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Low Cost ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Composite Polymer Electrolyte ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Reinforced Composite ◽  
Li Ion

Solid polymer electrolytes (SPEs) with good flexibility and low cost are very promising for all-solid-state lithium metal batteries, but they suffer from the trad-off between ionic conductivity at room temperature...

scholarly journals Lithium Metal Anode for High-Power and High-Capacity Rechargeable Batteries

2021 ◽  
Vol 03 (02) ◽  
pp. 1-1
Author(s):  
Nobuyuki Imanishi ◽  
◽  
Daisuke Mori ◽  
Sou Taminato ◽  
Yasuo Takeda ◽  
...  
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Specific Capacity ◽  
High Capacity ◽  
High Energy ◽  
Rechargeable Batteries ◽  
High Energy Density ◽  
Current Status ◽  
High Current ◽  
Lithium Metal

Because lithium metal exhibits high specific capacity and low potential, it is the best candidate for fabricating anodes for batteries. Rechargeable batteries fabricated using lithium anode exhibit high capacity and high potential cathode; these can be potentially used to fabricate high energy density batteries (>500 Wh kg–1) that can be used for the development of next-generation electric vehicles. However, the formation and growth of lithium dendrites and the low coulombic efficiency recorded during lithium plating and stripping under conditions of high current density hinder the use of lithium metal as the anodic material for the development of practical rechargeable batteries. In this short review, we outline the current status and prospects of lithium anodes for fabricating batteries in the presence of non-aqueous liquid, polymer, and solid electrolytes operated under conditions of high current density.

Polyphenylene sulfide quasi-solid-state electrolyte for limited Li metal battery

2021 ◽  
Author(s):  
De Chen ◽  
Haitao Zhou ◽  
Chongchen Yu ◽  
Hongquan Gao ◽  
Jianchun Wu ◽  
...  
Keyword(s):  
Solid State ◽  
High Current Density ◽  
High Energy ◽  
Polyphenylene Sulfide ◽  
High Energy Density ◽  
Solid Polymer ◽  
Excellent Thermal Stability ◽  
Solid State Electrolyte ◽  
Free Process ◽  
Li Ion

Abstract The urgent need for safe and high energy batteries is pushing the battery studies towards the solid-state direction, and the most central question is finding proper solid-state electrolyte. So far, the recently studied electrolyte systems have obvious advantages and fatal weaknesses, resulting in indecisive plans for industrial production. In this work, we propose a thin and dense lithiated polyphenylene sulfide (PPS)-based solid polymer electrolyte prepared by a solvent-free process in a pilot stage. Moreover, the PPS surface is functionalized to immobilize the anions, increase the Li ion transference number to 0.8-0.9, and widen the electrochemical potential window (>5.1 V). At room temperature, the PPS-based quasi-solid electrolyte (PPS-QSSE) exhibits high intrinsic Li+ diffusion coefficient and ionic conductivity (>10-4 S cm-1), excellent thermal stability, and Li+ transport rectifying effect, resulting in homogenous Li-plating on Cu at high current density. Based on the limited Li-plated Cu anode or anode-free Cu, high loadings cathode and high voltage, the Li metal batteries with PPS-QSSEs deliver high energy density (>1000 Wh L-1) and good cycling at high power (900 W L-1) exceeding that of state-of-the-art Li-ion batteries. The results enlighten the mechanism of solid-liquid two phase conduction and promote the solid-state battery towards practicality.

Ion transport in polycarbonate based solid polymer electrolytes: experimental and computational investigations

2016 ◽  
Vol 18 (14) ◽  
pp. 9504-9513 ◽  
Author(s):  
Bing Sun ◽  
Jonas Mindemark ◽  
Evgeny V. Morozov ◽  
Luciano T. Costa ◽  
Martin Bergman ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Elevated Temperatures ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Alternative Host ◽  
Host Materials

Among the alternative host materials for solid polymer electrolytes (SPEs), polycarbonates have recently shown promising functionality in all-solid-state lithium batteries from ambient to elevated temperatures.

scholarly journals Modeling and Simulation in Capacity Degradation and Control of All-Solid-State Lithium Battery Based on Time-Aging Polymer Electrolyte

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1206
Author(s):  
Xuansen Fang ◽  
Yaolong He ◽  
Xiaomin Fan ◽  
Dan Zhang ◽  
Hongjiu Hu
Keyword(s):  
Solid State ◽  
Lithium Battery ◽  
Lithium Salt ◽  
Operating Temperature ◽  
Discharge Rate ◽  
Salt Content ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Capacity Degradation

The prediction of electrochemical performance is the basis for long-term service of all-solid-state-battery (ASSB) regarding the time-aging of solid polymer electrolytes. To get insight into the influence mechanism of electrolyte aging on cell fading, we have established a continuum model for quantitatively analyzing the capacity evolution of the lithium battery during the time-aging process. The simulations have unveiled the phenomenon of electrolyte-aging-induced capacity degradation. The effects of discharge rate, operating temperature, and lithium-salt concentration in the electrolyte, as well as the electrolyte thickness, have also been explored in detail. The results have shown that capacity loss of ASSB is controlled by the decrease in the contact area of the electrolyte/electrode interface at the initial aging stage and is subsequently dominated by the mobilities of lithium-ion across the aging electrolyte. Moreover, reducing the discharge rate or increasing the operating temperature can weaken this cell deterioration. Besides, the thinner electrolyte film with acceptable lithium salt content benefits the durability of the ASSB. It has also been found that the negative effect of the aging electrolytes can be relieved if the electrolyte conductivity is kept being above a critical value under the storage and using conditions.

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