Synthesis of porous polyvinylidene fluoride (PVDF) microspheres and their application in lithium sulfur batteries

Tao, Tao; Deng, Yongmao; Zeng, Liang; Liang, Bo; Yao, Yingbang; Lu, Sheng‐Guo; Chen, Ying

doi:10.1016/j.matlet.2016.11.023

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…This work proposed an effective strategy to achieve effective polysulfide trapping by combing well‐designed nanostructure with functional polymer carriers. Since then, numerous polymers such as polydopamine, [ 113 ] poly‐(sodium p ‐styrenesulfonate), [ 114 ] poly(ethylene oxide), [ 115 ] polyvinylidene fluoride (PVDF), [ 116 ] and polyimides [ 117 ] have been successfully explored to serve as serve sulfur carriers and result in efficient LiPS trapping ability.…”

Section: Polymer‐based Cathodesmentioning

confidence: 99%

Polymers in Lithium–Sulfur Batteries

et al. 2021

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Lithium–sulfur batteries (LSBs) hold great promise as one of the next‐generation power supplies for portable electronics and electric vehicles due to their ultrahigh energy density, cost effectiveness, and environmental benignity. However, their practical application has been impeded owing to the electronic insulation of sulfur and its intermediates, serious shuttle effect, large volume variation, and uncontrollable formation of lithium dendrites. Over the past decades, many pioneering strategies have been developed to address these issues via improving electrodes, electrolytes, separators and binders. Remarkably, polymers can be readily applied to all these aspects due to their structural designability, functional versatility, superior chemical stability and processability. Moreover, their lightweight and rich resource characteristics enable the production of LSBs with high‐volume energy density at low cost. Surprisingly, there have been few reviews on development of polymers in LSBs. Herein, breakthroughs and future perspectives of emerging polymers in LSBs are scrutinized. Significant attention is centered on recent implementation of polymers in each component of LSBs with an emphasis on intrinsic mechanisms underlying their specific functions. The review offers a comprehensive overview of state‐of‐the‐art polymers for LSBs, provides in‐depth insights into addressing key challenges, and affords important resources for researchers working on electrochemical energy systems.

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Section: Polymer‐based Cathodesmentioning

confidence: 99%

Polymers in Lithium–Sulfur Batteries

et al. 2021

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“…The coating process of the spun S fibers with poly(pyrrole) was performed through oxidative coupling reaction of pyrrole by iodine, which enhanced their electrochemical responses. Tao et al prepared porous polyvinylidene fluoride (PVDF) microspheres by a simple electrospraying method. The microspheres with an average diameter of 2–5 µm gained interconnective pores.…”

Section: Cathodementioning

confidence: 99%

A Review: Electrospun Nanofiber Materials for Lithium‐Sulfur Batteries

Liu

Deng

et al. 2019

Adv Funct Materials

157

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Lithium-sulfur (Li-S) batteries are in the spotlight because their outstanding theoretical specific energy is much higher than those of the commercial lithium ion (Li-ion) batteries. Li-S batteries are tough competitors for futuredeveloping energy storage in the fields of portable electronics and electric vehicles. However, the severe "shuttle effect" of the polysulfides and the serious damage of lithium dendrites are main factors blocking commercial production of Li-S batteries. Owing to their superior nanostructure, electrospun nanofiber materials commonly show some unique characteristics that can simultaneously resolve these issues. So far, various novel cathodes, separators, and interlayers of electrospun nanofiber materials which are applied to resolve these challenges are researched. This review presents the fundamental research and technological development of multifarious electrospun nanofiber materials for Li-S cells, including their processing methods, structures, morphology engineering, and electrochemical performance. Not only does the review article contain a summary of electrospun nanofiber materials in Li-S batteries but also a proposal for designing electrospun nanofiber materials for Li-S cells. These systematic discussions and proposed directions can enlighten thoughts and offer ways in the reasonable design of electrospun nanofiber materials for excellent Li-S batteries in the near future.or conducting coagulation bath) is placed against the capillary. A thin polymer fiber membrane is deposited on the collector. The electrospun nanofibers have big potential for developing the outstanding energy storage systems due to their high surface area and excellent surface-to-volume ratio which can offer numerous active sites and controllable porous structure to buffer the huge volume changes during battery cycling and infiltrate the electrolyte. [18] Electrospun nanofiber membranes possess high porosity, large specific surface area, and controllable pore size, which will block "shuttle effect" of polysulfides and enhance the wettability for electrolytes. [19] Electrospinning technique and carbonization process are facile to manufacture freestanding nanofiber fabrics with controllable porous architecture and outstanding electrical conductivity. Electrospun porous nanofibers can come into a reservoir-like matrix for the reserve of active materials. First, the hierarchical pores in electrospun porous nanofibers can improve the reactive S reaction sites and block soluble polysulfides, thereby decreasing the "shuttling effect" of polysulfides during the electrochemical cycling. Second, electrospun porous fibers have excellent physical and mechanical properties, outstanding architecture, and superior electrical conductivity, which can enhance the transfer of Li-ions and electrons, endowing extraordinary electrochemical performance of the whole battery system. [20] Figure 2 shows phase and morphological evolutions of the electrospun nanofibers. By combining the electrospinning and other treatment (thermal, chem...

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“…At present, there is a growing interest in the preparation of polymeric capillary-porous materials, such as membranes for liquid filtration [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ] and gas separation [ 9 , 10 , 11 ], porous pellets for immobilization of pharmaceuticals [ 12 , 13 , 14 ] or nanoparticles [ 15 , 16 ], scaffolds for tissue engineering [ 17 , 18 ], etc. [ 19 , 20 , 21 , 22 ]. From the variety of polymers used for the production of such materials, considerable attention is attracted by polyvinylidene fluoride (PVDF) [ 1 , 2 , 3 , 15 , 19 , 20 ] due to its low cost, good chemical and thermal resistance, and decent mechanical properties [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

“…[ 19 , 20 , 21 , 22 ]. From the variety of polymers used for the production of such materials, considerable attention is attracted by polyvinylidene fluoride (PVDF) [ 1 , 2 , 3 , 15 , 19 , 20 ] due to its low cost, good chemical and thermal resistance, and decent mechanical properties [ 1 ]. Capillary-porous bodies were obtained from the blends of PDVF with thermodynamically good [ 23 , 24 , 25 , 26 , 27 ] and poor [ 28 , 29 , 30 , 31 ] liquid solvents.…”

Section: Introductionmentioning

confidence: 99%

A New Look at the Structure and Thermal Behavior of Polyvinylidene Fluoride–Camphor Mixtures

et al. 2022

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An experimental quasi-equilibrium phase diagram of the polyvinylidene fluoride (PVDF)–camphor mixture is constructed using an original optical method. For the first time, it contains a boundary curve that describes the dependence of camphor solubility in the amorphous regions of PVDF on temperature. It is argued that this diagram cannot be considered a full analogue of the eutectic phase diagrams of two low-molar-mass crystalline substances. The phase diagram is used to interpret the polarized light hot-stage microscopy data on cooling the above mixtures from a homogeneous state to room temperature and scanning electron microscopy data on the morphology of capillary-porous bodies formed upon camphor removal. Based on our calorimetry and X-ray studies, we put in doubt the possibility of incongruent crystalline complex formation between PVDF and camphor previously suggested by Dasgupta et al. (Macromolecules 2005, 38, 5602–5608). We also describe and discuss the high-temperature crystalline structure of racemic camphor, which is not available in the modern literature.

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Synthesis of porous polyvinylidene fluoride (PVDF) microspheres and their application in lithium sulfur batteries

Cited by 10 publications

References 19 publications

Polymers in Lithium–Sulfur Batteries

Polymers in Lithium–Sulfur Batteries

A Review: Electrospun Nanofiber Materials for Lithium‐Sulfur Batteries

A New Look at the Structure and Thermal Behavior of Polyvinylidene Fluoride–Camphor Mixtures

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