PEO/hollow mesoporous polymer spheres composites as electrolyte for all solid state lithium ion battery

Liu, Ruiping; He, Peng; Wu, Zirui; Guo, Fei; Huang, Bing; Wang, Qi; Huang, Zeya; Wang, Chang‐An; Li, Yutao

doi:10.1016/j.jelechem.2018.05.021

Cited by 27 publications

(13 citation statements)

References 17 publications

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“…It can be seen that with the formation of electrolytes, the surface layer of LiFePO 4 is gradually permeated by electrolyte, which fully embodies the advantage of the in‐situ UV curing method. This minimizes the interface contact between electrolyte and electrode in solid lithium‐ion batteries 23 . As shown in Figure 3f, after 30 cycles, the CEI layer is found on the surface of LiFePO 4 .…”

Section: Resultsmentioning

confidence: 98%

“…It means that the amount of initiator, the percentage of monomer, the time of illumination, and other key parameters affecting the polymerization reaction are appropriate 30 . Also, complete polymerization and no residual monomer can avoid the negative influence of unreacted monomer on the electrochemical performance of polymer electrolyte, especially the stability of the electrode‐electrolyte interface 23,31 …”

Section: Resultsmentioning

confidence: 99%

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Effect of UV light polymerization time on the properties of plastic crystal composite polyacrylate polymer electrolyte for all solid‐state lithium‐ion batteries

Zhang

Yang

et al. 2021

J of Applied Polymer Sci

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To solve the issues of low ionic conductivity, poor interfacial stability, and weak mechanical strength in the current polymer electrolytes, herein, the UV curing method is proposed to in‐situ polymerize the plastic crystal composite solid polymer electrolyte (S‐PCCE). By using ethoxylated trimethylolpropane triacrylate (ETPTA) as polymerization monomer, in conjunction with the butadiene nitrile and other additives, the S‐PCCE is prepared under ultraviolet light. The S‐PCCE shows improved ionic conductivity than other solid electrolyte materials. The ionic conductivity at room temperature can reach 0.98 × 10−3 S/cm, and it can reach 2.8 × 10−3 S/cm at 55°C, which is beneficial to achieve high battery performance. The LiFePO4/S‐PCCE/Li battery has a high initial discharge specific capacity of 150.4 mAh/g at 0.2C, and the highest discharge specific capacity can reach 162.5 mAh/g. Moreover, after 100 cycles, the battery can still maintain a high discharge specific capacity of 154.2 mAh/g, with a Coulomb efficiency of 98.4%. At the same time, the electrolyte has excellent high‐temperature adaptability, and can still work stably at 55°C with improved ionic conductivity. The superior performance of this material indicates that the plastic crystal composite polyacrylate solid electrolyte based on UV curing method can be used to prepare a high‐performance lithium‐ion battery, and this technology can also be compatible with existing lithium‐ion battery equipment.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Effect of UV light polymerization time on the properties of plastic crystal composite polyacrylate polymer electrolyte for all solid‐state lithium‐ion batteries

Zhang

Yang

et al. 2021

J of Applied Polymer Sci

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“…The diffraction peaks of PAL-C electrolyte at 19.0° and 23.2° are sharp and intense, indicating the highly crystalline nature. [22,23] As a comparison, the diffraction pattern of PAL-R exhibits several broad and weak peaks, suggesting that the crystallinity of the PAL-R greatly reduced after press rolling. Besides, the main XRD peaks of PEO at 19.0° are also characterized by significant changes in the full width at half maximum (0.216 for PAL-C and 0.323 for PAL-R), implying that the amorphous phase in the electrolyte has increased.…”

Section: Resultsmentioning

confidence: 99%

Improving the conductivity of solid polymer electrolyte by grain reforming

Wei

Ren

Wang

et al. 2020

Preprint

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Polyethylene oxide (PEO)-based solid polymer electrolyte (SPE) is considered to have great application prospects in all-solid-state li-ion batteries. However, the application of PEO-based SPEs is hindered by the relatively low ionic conductivity, which strongly depends on its crystallinity and density of grain boundaries. In this work, a simple and effective press rolling method is applied to reduce the crystallinity of PEO-based SPEs for the first time. With the rolled PEO-based SPE, the LiFePO4/SPE/Li all-solid li-ion battery delivers a superior rechargeable specific capacity of 162.6 mAh g-1 with a discharge-charge voltage gap of 60 mV at a current density of 0.2 C with a much lower capacity decay rate. The improvement of electrochemical properties can be attributed to the press rolling method, leading to a doubling conductivity and reduced activation energy compared with that of electrolyte prepared by traditional cast method. The present work provides an effective and easy-to-use grain reforming method for SPE, worthy of future application.

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“…81 Similarly, Wang et al incorporated vinyl-functionalized MOF (M-UiO-66-NH 2 ) nanoparticles (Figure 6B) into polymer electrolytes and achieved a high ionic conductivity of 4.31 × 10 −5 S cm −1 at 30°C and much better interfacial contact with Li electrodes. 112 Recently, increasingly more organic-matter-based additives have been explored, such as UIO-66, 82 UIO-67, 113 a mesoporous organic polymer (MOP), 83 lithiophilic polyacenequinone (PQ), 114 and so forth. Despite the success of these organic-matter-based additives in SPEs, more investigation needs to be conducted to better understand the working mechanisms of these additives due to the complexity of their structures.…”

Section: Enhancing Ionic Conductivitymentioning

confidence: 99%

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

et al. 2021

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Solid polymer electrolytes (SPEs) have become increasingly attractive in solidstate lithium-ion batteries (SSLIBs) in recent years because of their inherent properties of flexibility, processability, and interfacial compatibility. However, the commercialization of SPEs remains challenging for flexible and highenergy-density LIBs. The incorporation of functional additives into SPEs could significantly improve the electrochemical and mechanical properties of SPEs and has created some historical milestones in boosting the development of SPEs. In this study, we review the roles of additives in SPEs, highlighting the working mechanisms and functionalities of the additives. The additives could afford significant advantages in boosting ionic conductivity, increasing ion transference number, improving high-voltage stability, enhancing mechanical strength, inhibiting lithium dendrite, and reducing flammability. Moreover, the application of functional additives in high-voltage cathodes, lithium-sulfur batteries, and flexible lithium-ion batteries is summarized. Finally, future research perspectives are proposed to overcome the unresolved technical hurdles and critical issues in additives of SPEs, such as facile fabrication process, interfacial compatibility, investigation of the working mechanism, and special functionalities.

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PEO/hollow mesoporous polymer spheres composites as electrolyte for all solid state lithium ion battery

Cited by 27 publications

References 17 publications

Effect of UV light polymerization time on the properties of plastic crystal composite polyacrylate polymer electrolyte for all solid‐state lithium‐ion batteries

Effect of UV light polymerization time on the properties of plastic crystal composite polyacrylate polymer electrolyte for all solid‐state lithium‐ion batteries

Improving the conductivity of solid polymer electrolyte by grain reforming

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

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