Quasi-solid-state sodium-ion hybrid capacitors enabled by UiO-66@PVDF-HFP multifunctional separators: Selective charge transfer and high fire safety

Feng, Wenliang; Zhang, Jing; Yusuf, Abdulmalik; Ao, Xiang; Shi, Dongfeng; Etacheri, Vinodkumar; Wang, De‐Yi

doi:10.1016/j.cej.2021.130919

Cited by 27 publications

(13 citation statements)

References 71 publications

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“…Specifically, the crystallinities of PVDF-HFP-LiTFSI, PVDF-HFP/PMMA, and PPZ-6% samples membrane calculated by eq are 66.4%, 58.3%, and 53.0%, respectively. Therefore, the DSC results prove that the dual modification is an effective strategy for decreasing the crystallization degree of the matrix polymer and providing more interspace for the transportation of lithium ions. , …”

Section: Results and Discussionmentioning

confidence: 79%

One-Step Synthesis of PVDF-HFP/PMMA-ZrO₂ Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

Zou

Chen

et al. 2022

ACS Appl. Energy Mater.

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The safety issue of lithium batteries based on liquid electrolytes has become the focus of attention, especially when the batteries are exposed to mechanical, thermal, or electrical abuse conditions. To address this issue, gel polymer electrolytes (GPEs) have attracted widespread interest due to the property of solid–liquid coexistence with higher ionic conductivity, flexibility, and safety. In this work, a poly(vinylidene-fluoride-co-hexafluoropropylene) (PVDF-HFP)/poly(methyl methacrylate) (PMMA) matrix GPE, containing bis(trifluoromethane)sulfonimide lithium salt (LiTFSI) and spherical zirconium dioxide (ZrO2) nanoparticles, is successfully designed and synthesized by a simple one-step solution-casting route. It has been found that the obtained PVDF-HFP/PMMA-ZrO2-6% (PPZ-6%) electrolyte film possesses an excellent tensile strength of 37.7 MPa. Moreover, the PPZ-6% GPE not only has a high ionic conductivity of 1.46 × 10–3 S cm–1 at 25 °C but also presents excellent interface compatibility in an Li||Li symmetrical battery. The LiFePO4||Li cell assembled with the PPZ-6% GPE exhibits good cyclic stability at room temperature, e.g., a high discharge specific capacity of 153.0 mAh g–1, and a high Coulombic efficiency of 99% after 200 cycles at 0.5 C. Therefore, this organic–inorganic hybrid GPE modified with spherical ZrO2 nanoparticles reveals a good application prospect for high-performance lithium metal batteries (LMBs).

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Section: Results and Discussionmentioning

confidence: 79%

One-Step Synthesis of PVDF-HFP/PMMA-ZrO₂ Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

Zou

Chen

et al. 2022

ACS Appl. Energy Mater.

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“…Besides, the CNTF‐LFP/CNTF‐LTO cell also exhibited a much smaller total heat released and a 10 s delay in ignition time compared to the conventional cell with Al current collector (Table S1, Supporting Information). These behaviors are attributed to the low flammability and self‐extinguishing nature of the polymer electrolyte [ 56 ] and the thermal barrier effect of the CNTs. [ 57 ]…”

Section: Resultsmentioning

confidence: 99%

“…Besides, the CNTF-LFP/CNTF-LTO cell also exhibited a much smaller total heat released and a 10 s delay in ignition time compared to the conventional cell with Al current collector (Table S1, Supporting Information). These behaviors are attributed to the low flammability and self-extinguishing nature of the polymer electrolyte [56] and the thermal barrier effect of the CNTs. [57] After assessing the correct functionality and performance at a cell level, we assembled a larger battery prototype composed of four 5 × 5 cm 2 cells, connected in series and parallel (2 × 2).…”

Section: Electrochemical Performance Of Cntf-lto/gpe/cntf-lfp Pouch C...mentioning

confidence: 99%

Thermoconformable, Flexible Lithium‐Ion Batteries

Boaretto

Dávila

Sevilla

et al. 2022

Adv Materials Technologies

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This work introduces a scalable method for fabrication of flexible, thermoconformable lithium‐ion batteries, suitable for the interior of vehicles. Electrodes with a composite structure are fabricated by combining conventional granular slurries with a porous carbon nanotube fabric current collector and a solid gel polymer electrolyte. The composite structure reduces polarization at high current densities, for example, with 50% and 17% higher charge capacity at 1C in LTO/Li half cells than control samples and commercial electrodes, respectively. Introducing a gel‐polymer electrolyte increases cell durability, safety, and thermal stability. Cyclability test at of 1C shows a capacity retention as high as 91% after almost 400 cycles (average capacity fade of 0.025% cycle−1). Full cells operate from 0 to 60 °C without any additives. Cells stored for 30 min up to 90 °C suffer minor capacity degradation. The possibility to withstand high temperatures and significant flexural deformation enable subjecting these pouch cells to thermoconformable processes. A roof panel with four 25 cm2 pouch cells is demonstrated. Flammability test shows that the carbon nanotube fibers (CNTF)‐LFP/CNTF‐LTO cells have a 50% lower peak of heat release rate and a much smaller total heat released than control cells with metallic current collector and liquid electrolyte.

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“…142,143 The development of composites of MOFs and polymer separators is of great significance for energy technology. In Feng's report, 84 On the other hand, based on the structural properties of MOFs, the composite of MOFs with commercial separators provides a feasible route to achieve durable and well-performing MIHCs. In a recent report, ZIF-7 was used in the modification of glass fiber separators to suppress the shuttle effect of soluble redox mediators.…”

Section: Mofs Modified Separatorsmentioning

confidence: 99%

Metal–organic frameworks and their derivatives for metal-ion (Li, Na, K and Zn) hybrid capacitors

Zhan

Wang

et al. 2022

Chem. Sci.

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Quasi-solid-state sodium-ion hybrid capacitors enabled by UiO-66@PVDF-HFP multifunctional separators: Selective charge transfer and high fire safety

Cited by 27 publications

References 71 publications

One-Step Synthesis of PVDF-HFP/PMMA-ZrO₂ Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

One-Step Synthesis of PVDF-HFP/PMMA-ZrO₂ Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

Thermoconformable, Flexible Lithium‐Ion Batteries

Metal–organic frameworks and their derivatives for metal-ion (Li, Na, K and Zn) hybrid capacitors

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Quasi-solid-state sodium-ion hybrid capacitors enabled by UiO-66@PVDF-HFP multifunctional separators: Selective charge transfer and high fire safety

Cited by 27 publications

References 71 publications

One-Step Synthesis of PVDF-HFP/PMMA-ZrO2 Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

One-Step Synthesis of PVDF-HFP/PMMA-ZrO2 Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

Thermoconformable, Flexible Lithium‐Ion Batteries

Metal–organic frameworks and their derivatives for metal-ion (Li, Na, K and Zn) hybrid capacitors

Contact Info

Product

Resources

About

One-Step Synthesis of PVDF-HFP/PMMA-ZrO₂ Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery

One-Step Synthesis of PVDF-HFP/PMMA-ZrO₂ Gel Polymer Electrolyte to Boost the Performance of a Lithium Metal Battery