Ether-containing polycarbonate-based solid polymer electrolytes for Dendrite-Free Lithium metal batteries

Chen, Yubing; Chen, Guangping; Niu, Chaoqun; Shang, Wenyan; Yu, Ruan; Fang, Chenxin; Ouyang, Peng; Du, Jie

doi:10.1016/j.polymer.2021.123695

Cited by 9 publications

(4 citation statements)

References 35 publications

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“…Therefore, the advantages of polycarbonate‐based and polyether‐based solid‐state electrolytes can be leveraged by in situ polymerization. [ 48 ] As a result, excellent Li + transference numbers, high ionic conductivities, and wide electrochemical windows were obtained for batteries with PADC–SSPE at room temperature. As shown by the SEM images, the Li anode surface in Li/Li cells was smooth even after 800 h of cycling.…”

Section: Solid‐state Polymer Electrolytesmentioning

confidence: 99%

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Polymers for Long‐Cycle and Highly Safe Lithium‐Based Batteries

Chen

Liu

et al. 2022

Macro Materials & Eng

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Lithium‐based batteries (LBBs) have virtually dominated the energy storage market for electronic products and electric vehicles. In these batteries, the critical roles of polymers cannot be ignored. In this article, state‐of‐the‐art developments and perspectives for improving the safety and stability of LBBs using polymers are summarized. These materials are particularly used as separator decorations, solid‐state electrolytes, binders, and fire retardants. Polymers exhibit excellent performance as binders for Si anodes because of their long chains and high adhesion ability. This review focuses on the application of polymers to Li–S batteries based on their fundamental electrochemistry and the challenges arising from the dissolution of polysulfides. In addition, the dendrite growth inhibition ability and mechanism of polymeric artificial solid electrolyte interphase film and solid‐state electrolytes are described. The performance of polymer as fire retardant and the mechanism for solid‐state polymer electrolytes are elaborated. Finally, the perspectives on the potential of polymers for LBBs and energy storage because of their outstanding plasticity and chemical controllability are presented.

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Section: Solid‐state Polymer Electrolytesmentioning

confidence: 99%

mentioning

confidence: 99%

Polymers for Long‐Cycle and Highly Safe Lithium‐Based Batteries

Chen

Liu

et al. 2022

Macro Materials & Eng

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“…Addressing these challenges using solid polymer electrolytes (SPEs) has been the subject of extensive research in the last few decades. Most research focused on PEO/lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) systems and has now expanded into a variety of polymer hosts and lithium salts. − …”

Section: Introductionmentioning

confidence: 99%

Polyphosphazene-Based Anion-Anchored Polymer Electrolytes For All-Solid-State Lithium Metal Batteries

Johnson,

Sankara Raman,

Narla

et al. 2024

ACS Omega

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Safety concerns of traditional liquid electrolytes, especially when paired with lithium (Li) metal anodes, have stimulated research of solid polymer electrolytes (SPEs) to exploit the superior thermal and mechanical properties of polymers. Polyphosphazenes are primarily known for their use as flame retardant materials and have demonstrated high Li-ion conductivity owing to their highly flexible P = N backbone which promotes Li-ion conduction via inter- and intrachain hopping along the polymer backbone. While polyphosphazenes are largely unexplored as SPEs in the literature, a few existing examples showed promising ionic conductivity. By anchoring the anion to the polymer backbone, one may primarily allow the movement of Li ions, alleviating the detrimental effects of polarization that are common in conventional dual-ion conducting SPEs. Anion-anchored SPEs, known as single Li-ion conducting solid polymer electrolytes (SLiC-SPEs), exhibit high Li-ion transference numbers (t Li+ ), which limits Li dendrite growth, thus further increasing the safety of SPEs. However, previously reported SLiC-SPEs suffer from inadequate ionic conductivity, small electrochemical stability windows (ESWs), and limited cycling stability. Herein, we report three polyphosphazene-based SLiC-SPEs comprising lithiated polyphosphazenes. The SLiC polyphosphazenes were prepared through a facile synthesis route, opening the door for enhanced tunability of polymer properties via facile macromolecular nucleophilic substitution and subsequent lithiation. State-of-the-art characterization techniques, such as differential scanning calorimetry (DSC), electrochemical impedance spectroscopy (EIS), and solid-state nuclear magnetic resonance spectroscopy (ssNMR) were employed to probe the effect of the polymer structure on Li-ion dynamics and other electrochemical properties. Produced SPEs showed thermal stability up to ∼208 °C with ionic conductivities comparable to that of the best-reported SLiC-SPEs that definitively comprise no solvents or plasticizers. Among the three lithiated polyphosphazenes, the SPE containing dilithium poly[bis(trifluoroethylamino)phosphazene] (pTFAP2Li) exhibited the most promising electrochemical characteristics with t Li+ of 0.76 and compatibility with both Li metal anodes and LiFePO4 (LFP) cathodes; through 40 cycles at 100 °C, the PEO-pTFAP2Li blend showed 81.2% capacity utilization and 86.8% capacity retention. This work constitutes one of the first successful demonstrations of the cycling performance of a true all-solid-state Li-metal battery using SLiC polyphosphazene SPEs.

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“…Wang and coworkers 36 prepared a fluorine-containing polycarbonate-based electrolyte, in which the assembled NCM811 LMBs exhibit a high specific capacity. Chen et al 37 presented a series of ethercontaining polycarbonate-based SPEs, which exhibit satisfying ion transport capacity. Although the ketone-based polymers also contain polar carbonyl groups, the application of ketonebased polymers in SPEs is very limited.…”

Section: Introductionmentioning

confidence: 99%

A Highly Salt-Soluble Ketone-Based All-Solid-State Polymer Electrolyte with Superior Performances for Lithium-Ion Batteries

Chen

Zeng

Wen

et al. 2023

ACS Appl. Mater. Interfaces

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Solid polymer electrolytes (SPEs) have great potential to be used in high-safety lithium-ion batteries (LIBs). However, it is still a significant challenge for SPEs to develop high ionic conductivity, high mechanical strength, and good interior interfacial compatibility. In this work, a ketone-based all-solidstate electrolyte (PAD) resulting from allyl acetoacetate (AAA), diacetone acrylamide (DAAM), and poly(ethylene glycol) diacrylate (PEGDA) was prepared by UV-inducing photopolymerization. The abundant ketone groups endow the prepared PAD all-solid-state electrolyte with strong dissociation of lithium salts and weak coordination interactions between ketone groups and Li + . Depending on the unique properties of the ketone groups in the electrolyte system, the prepared polymer electrolytes show a high lithium-ion transference number of 0.87 and a wide electrochemical window of 4.95 V. Furthermore, the PAD electrolyte also exhibits superior viscoelasticity, which is beneficial for good contact with electrodes. As a result, the assembled LFP/PAD/Li cells with PAD electrolytes show good cycle performance and rate performance. Concretely, the all-solid-state symmetric lithium cells with the PAD electrolyte can achieve stable lithium plating and stripping at 0.05 mA cm −2 for over 1000 h at 60 °C. This work highlights the advantages of ketone-based electrolyte as a polymer electrolyte and provides a design method for advanced polymer electrolytes applied in high-performance solid lithium batteries.

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Ether-containing polycarbonate-based solid polymer electrolytes for Dendrite-Free Lithium metal batteries

Cited by 9 publications

References 35 publications

Polymers for Long‐Cycle and Highly Safe Lithium‐Based Batteries

Polymers for Long‐Cycle and Highly Safe Lithium‐Based Batteries

Polyphosphazene-Based Anion-Anchored Polymer Electrolytes For All-Solid-State Lithium Metal Batteries

A Highly Salt-Soluble Ketone-Based All-Solid-State Polymer Electrolyte with Superior Performances for Lithium-Ion Batteries

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