Electrospun electroactive polyvinylidene fluoride-based fibrous polymer electrolyte for sodium ion batteries

Janakiraman, S.; Surendran, Abhijith; Biswal, R. N.; Ghosh, Sudipto; Anandhan, S.; Venimadhav, A.

doi:10.1088/2053-1591/ab226a

Cited by 26 publications

(19 citation statements)

References 48 publications

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“…2 b confirm the phase change from α to β within the nanofibers [50] , [51] . In accordance with the FTIR results, the PVDF powder reflects three major XRD peak positions at 18.27°, 19.7°, 26.5°, and 33.2°, which are matched with the monoclinic α crystalline phase [45] , [52] , [53] . The clear phase transformation into the β phase is observed for the solution cast thin film and electrospun PVDF nanofiber.…”

Section: Resultssupporting

confidence: 82%

Ferroelectric PVDF nanofiber membrane for high-efficiency PM0.3 air filtration with low air flow resistance

Bui

Shin

Jee³

et al. 2022

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The significant public health concerns related to particulate matter (PM) air pollutants and the airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have led to considerable interest in high-performance air filtration membranes. Highly ferroelectric polyvinylidene fluoride (PVDF) nanofiber (NF) filter membranes are successfully fabricated via electrospinning for high-performance low-cost air filtration. Spectroscopic and ferro-/piezoelectric analyses of PVDF NF show that a thinner PVDF NF typically forms a ferroelectric β phase with a confinement effect. A 70-nm PVDF NF membrane exhibits the highest fraction of β phase (87%) and the largest polarization behavior from piezoresponse force microscopy. An ultrathin 70-nm PVDF NF membrane exhibits a high PM 0.3 filtration efficiency of 97.40% with a low pressure drop of 51 Pa at an air flow of 5.3 cm/s owing to the synergetic combination of the slip effect and ferroelectric dipole interaction. Additionally, the 70-nm PVDF NF membrane shows excellent thermal and chemical stabilities with negligible filtration performance degradation (air filtration efficiency of 95.99% and 87.90% and pressure drop of 55 and 65 Pa, respectively) after 24 h of heating at 120 °C and 1 h immersion in isopropanol.

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Section: Resultssupporting

confidence: 82%

Ferroelectric PVDF nanofiber membrane for high-efficiency PM0.3 air filtration with low air flow resistance

Bui

Shin

Jee³

et al. 2022

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…[ 147,153–155 ] Lately, Janakiraman et al. [ 156 ] prepared a PVDF‐based GPE for SIBs by electrospinning method with a nanofibers structure, which exhibited a wide voltage window (0–5 V vs Na + /Na) and high ionic conductivity of 1.08 × 10 −3 S cm −1 . More importantly, PVDF‐HFP has attracted considerable attention since Pasquier et al.…”

Section: Pes For Na‐ion Batteriesmentioning

confidence: 99%

Recent Advances and Perspectives on the Polymer Electrolytes for Sodium/Potassium‐Ion Batteries

Yin

Han

Liu

et al. 2021

Small

112

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Owing to the low cost of sodium/potassium resources and similar electrochemical properties of Na+/K+ to Li+, sodium‐ion batteries (SIBs) and potassium‐ion batteries (KIBs) are regarded as promising alternatives to lithium‐ion batteries (LIBs) in large‐scale energy storage field. However, traditional organic liquid electrolytes bestow SIBs/KIBs with serious safety concerns. In contrast, quasi‐/solid‐phase electrolytes including polymer electrolytes (PEs) and inorganic solid electrolytes (ISEs) show great superiority of high safety. However, the poor processibility and relatively low ionic conductivity of Na+ and K+ ions limit the further practical applications of ISEs. PEs combine some merits of both liquid‐phase electrolytes and ISEs, and present great potentials in next‐generation energy storage systems. Considerable efforts have been devoted to improving their overall properties. Nevertheless, there is still a lack of an in‐depth and comprehensive review to get insights into mechanisms and corresponding design strategies of PEs. Herein, the advantages of different electrolytes, particularly PEs are first minutely reviewed, and the mechanism of PEs for Na+/K+ ion transfer is summarized. Then, representative researches and recent progresses of SIBs/KIBs based on PEs are presented. Finally, some suggestions and perspectives are put forward to provide some possible directions for the follow‐up researches.

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“…Janakiraman et al [85] . electrospun PVDF to produce a separator subsequently soaked in NaPF 6 to form a gel, yielding an ionic conductivity of 1.08 mS cm −1 while using materials already common to Na‐ion cell production.…”

Section: Combining and Mixingmentioning

confidence: 99%

“…electrospun PVDF to produce a separator subsequently soaked in NaPF 6 to form a gel, yielding an ionic conductivity of 1.08 mS cm −1 while using materials already common to Na‐ion cell production. The authors attribute the higher conductivity obtained with sodium salt, compared with identical tests using LiPF 6 (which yielded an ionic conductivity of 0.94 mS cm −1 ), to ionic charge density and weaker interactions of the sodium with the fluoride ion [85] . However, the solvents used (equal parts EC and PC) are not conventionally applied in Li‐ion electrolyte, presenting another complication to direct comparisons between Na‐ion and Li‐ion systems.…”

Section: Combining and Mixingmentioning

confidence: 99%

Process‐Structure‐Formulation Interactions for Enhanced Sodium Ion Battery Development: A Review

Sawhney

Wahid²,

Griffin

et al. 2022

ChemPhysChem

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Before the viability of a cell formulation can be assessed for implementation in commercial sodium ion batteries, processes applied in cell production should be validated and optimized. This review summarizes the steps performed in constructing sodium ion (Na‐ion) cells at research scale, highlighting parameters and techniques that are likely to impact measured cycling performance. Consistent process‐structure‐performance links have been established for typical lithium‐ion (Li‐ion) cells, which can guide hypotheses to test in Na‐ion cells. Liquid electrolyte viscosity, sequence of mixing electrode slurries, rate of drying electrodes and cycling characteristics of formation were found critical to the reported capacity of laboratory cells. Based on the observed importance of processing to battery performance outcomes, the current focus on novel materials in Na‐ion research should be balanced with deeper investigation into mechanistic changes of cell components during and after production, to better inform future designs of these promising batteries.

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Electrospun electroactive polyvinylidene fluoride-based fibrous polymer electrolyte for sodium ion batteries

Cited by 26 publications

References 48 publications

Ferroelectric PVDF nanofiber membrane for high-efficiency PM0.3 air filtration with low air flow resistance

Ferroelectric PVDF nanofiber membrane for high-efficiency PM0.3 air filtration with low air flow resistance

Recent Advances and Perspectives on the Polymer Electrolytes for Sodium/Potassium‐Ion Batteries

Process‐Structure‐Formulation Interactions for Enhanced Sodium Ion Battery Development: A Review

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