Blending Based PEO-PAN-PMMA Gel Polymer Electrolyte Prepared by Spaying Casting for Solid-state Lithium Metal Batteries

Shusen, Kang; Yang, Chengxiang; Yang, Zelin; Wu, Ningning; Zhao, Shenghui; Chen, Xiaotao; Liu, Fuliang; Shi, Bin

doi:10.6023/a20080356

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…Most polymers have been recently exploited to dissolve lithium salts in these polymers for constructing SPEs, such as poly(ethylene oxide) (PEO), polyacrylonitrile (PAN), poly(vinylidene fluoride) (PVDF), poly(methyl methacrylate) (PMMA), and so on, in order to effectively enhance the performance of solid polymer electrolytes. − Especially, the SPE based on PEO is the most extensively investigated of polymer hosts for an efficient Li-salt dissolvability through the interaction of its ether oxygen bonds with cations. For all of the above reasons, numerous strategies have been reported to improve the ion conductivities of SPEs, including blocking − and grafting modification, , adding plasticizers, , polymer blending, , or forming the cross-networking. , Besides, many polymers containing abundant EO structure units have also been studied as matrices of SPEs. − In particular, the preparation methods of solid polymer electrolytes can influence the interface impedance.…”

Section: Introductionmentioning

confidence: 99%

Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery

Bai

Wang

et al. 2023

ACS Omega

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The existing in situ preparation methods of solid polymer electrolytes (SPEs) often require the use of a solvent, which would lead to a complicated process and potential safety hazards. Therefore, it is urgent to develop a solvent-free in situ method to produce SPEs with good processability and excellent compatibility. Herein, a series of polyaspartate polyurea-based SPEs (PAEPU-based SPEs) with abundant PO) x (EO) y (PO z segments and cross-linked structures were developed by systematically regulating the molar ratios of isophorone diisocyanate (IPDI) and isophorone diisocyanate trimer (tri-IPDI) in the polymer backbone and LiTFSI concentrations via an in situ polymerization method, which gave rise to good interfacial compatibility. Furthermore, the in situ-prepared PAEPU-SPE@D15 based on the IPDI/tri-IPDI molar ratio of 2:1 and 15 wt % LiTFSI exhibits an improved ionic conductivity of 6.80 × 10–5 S/cm at 30 °C and could reach 10–4 orders of magnitude when the temperature was above 40 °C. The Li|LiFePO4 battery based on PAEPU-SPE@D15 had a wide electrochemical stability window of 5.18 V, demonstrating a superior interface compatibility toward LiFePO4 and the lithium metal anode, exhibited a high discharge capacity of 145.7 mAh g–1 at the 100th cycle and a capacity retention of 96.8%, and retained a coulombic efficiency of above 98.0%. These results showed that the PAEPU-SPE@D15 system displayed a stable cycle performance, excellent rate performance, and high safety compared with PEO systems, indicating that the PAEPU-based SPE system may play a crucial role in the future.

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Section: Introductionmentioning

confidence: 99%

Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery

Bai

Wang

et al. 2023

ACS Omega

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“…To deal with those issues, safe and environmentally-benign gel polymer electrolytes with flexibility have attracted extensive attention. Gel electrolytes are commonly prepared by injecting large quantities of liquid electrolyte into the suitable polymer matrix, where polymers can effectively inhibit solvent volatilization and provide mechanical support for membrane formation. − Benefiting from high cation density and mobility gained by the reasonable structure, gel electrolytes reveal improved ionic conductivity and water retention. All in all, the gel electrolyte can not only avoid the risk of electrolyte leakage but also optimize the capacity and polarization characteristics of the battery.…”

Section: Introductionmentioning

confidence: 99%

Flexible Aluminum-Air Battery Based on Ionic Liquid-Gel Polymer Electrolyte

et al. 2022

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There is an urgent demand to develop high-performance flexible batteries for a wide range of contemporary emerging fields, including flexible electronics, wearable sensors, and implantable medical devices. However, the inherent safety and stability issues of traditional organic liquid-based electrolytes make their application in flexible batteries unsatisfactory. Therefore, exploring gel electrolytes with superior ionic conductivity and safety is considered to be the key to the development of flexible batteries. In this paper, two types of high-quality ionic liquid-based gel polymer electrolyte membranes (PVDF-ILs) are created by a conventional solution-casting method, which are further integrated into flexible aluminum-air batteries to guide the interface and process research, and the related discharge properties of two ionic liquid-based electrolyte membrane (PVDF-[C4mpyr]Cl, PVDF-[BMIM]Cl) in different bending states are discussed. The results show that PVDF-ILs have a rich pore structure and interwoven skeleton network, leading to relatively high ionic conductivity (2.97 × 10–3 S cm–1). Moreover, two types of batteries can meet the needs of flexibility, although there is a slight loss of power density under various bending conditions. In general, a PVDF-[C4mpyr]Cl-based flexible aluminum-air battery is suitable for the working conditions of high power and low bending angle, while the PVDF-[BMIM]Cl-based flexible aluminum-air battery is favored for microwatt low-power devices with high flexibility requirements.

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Research Progress on Room-temperature Solid-state Lithium Metal Batteries with Poly(ethylene oxide)-based Solid Polymer Electrolytes

Zhang,

Wang,

Cui

et al. 2024

Acta Chimica Sinica

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Blending Based PEO-PAN-PMMA Gel Polymer Electrolyte Prepared by Spaying Casting for Solid-state Lithium Metal Batteries

Cited by 3 publications

References 19 publications

Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery

Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery

Flexible Aluminum-Air Battery Based on Ionic Liquid-Gel Polymer Electrolyte

Research Progress on Room-temperature Solid-state Lithium Metal Batteries with Poly(ethylene oxide)-based Solid Polymer Electrolytes

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