Electrospun sandwich polysulfonamide/polyacrylonitrile/polysulfonamide composite nanofibrous membranes for lithium-ion batteries

Xu, Tongwen; Xin, Binjie; Lü, Zan; Gao, Weihong; Zhang, Fuli

doi:10.1039/c8ra10229e

Cited by 36 publications

(16 citation statements)

References 34 publications

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“…Membranes immersed in iPrOH/BuOH show a decreased modulus and lower strain at break due to the increased porosity of the membrane. However, the obtained combination of E and a semiductile character (in comparison with the poor ductility of Celgard 2400; ε b : 3%) 47 allows easy handling of the membranes during battery assembly while providing good resistance to dendrite puncture.…”

Section: Resultsmentioning

confidence: 99%

Stable Na Electrodeposition Enabled by Agarose-Based Water-Soluble Sodium Ion Battery Separators

Ojanguren

Mittal

Lizundia

et al. 2021

ACS Appl. Mater. Interfaces

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Developing efficient energy storage technologies is at the core of current strategies toward a decarbonized society. Energy storage systems based on renewable, nontoxic, and degradable materials represent a circular economy approach to address the environmental pollution issues associated with conventional batteries, that is, resource depletion and inadequate disposal. Here we tap into that prospect using a marine biopolymer together with a water-soluble polymer to develop sodium ion battery (NIB) separators. Mesoporous membranes comprising agarose, an algae-derived polysaccharide, and poly(vinyl alcohol) are synthesized via nonsolvent-induced phase separation. Obtained membranes outperform conventional nondegradable NIB separators in terms of thermal stability, electrolyte wettability, and Na + conductivity. Thanks to the good interfacial adhesion with metallic Na promoted by the hydroxyl and ether functional groups of agarose, the separators enable a stable and homogeneous Na deposition with limited dendrite growth. As a result, membranes can operate at 200 μA cm –2 , in contrast with Celgard and glass microfiber, which short circuit at 50 and 100 μA cm –2 , respectively. When evaluated in Na 3 V 2 (PO 4 ) 3 /Na half-cells, agarose-based separators deliver 108 mA h g –1 after 50 cycles at C/10, together with a remarkable rate capability. This work opens up new possibilities for the use of water-degradable separators, reducing the environmental burdens arising from the uncontrolled accumulation of electronic waste in marine or land environments.

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Section: Resultsmentioning

confidence: 99%

Stable Na Electrodeposition Enabled by Agarose-Based Water-Soluble Sodium Ion Battery Separators

Ojanguren

Mittal

Lizundia

et al. 2021

ACS Appl. Mater. Interfaces

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“…In spite of the stiffening effect provided by inorganic nanoparticles, the ductility remains barely unchanged, keeping the elongation at break above 10%. Importantly, achieved ε b values are larger than results obtained for other porous materials such as Celgard 2400 (based on a petroleum-derived polymer) or glass microfiber filters, with elongations at break of 3 and 5.8%, respectively (Tian et al 2019 ; Gonçalves et al 2019 ). Such adequate ductility ensures that the membranes will not break apart when applied as catalytically active free-standing hybrid materials.…”

Section: Resultsmentioning

confidence: 80%

Upcycling discarded cellulosic surgical masks into catalytically active freestanding materials

et al. 2022

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The COVID-19 pandemic outbreak has resulted in the massive fabrication of disposable surgical masks. As the accumulation of discarded face masks represents a booming threat to the environment, here we propose a solution to reuse and upcycle surgical masks according to one of the cornerstones of the circular economy. Specifically, the non-woven cellulosic layer of the masks is used as an environmentally sustainable and highly porous solid support for the controlled deposition of catalytically active metal-oxide nanoparticles. The native cellulosic fibers from the surgical masks are decorated by titanium dioxide (TiO2), iron oxide (FexOy), and cobalt oxide (CoOx) nanoparticles following a simple and scalable approach. The abundant surface –OH groups of cellulose enable the controlled deposition of metal-oxide nanoparticles that are photocatalytically active or shown enzyme-mimetic activities. Importantly, the hydrophilic highly porous character of the cellulosic non-woven offers higher accessibility of the pollutant to the catalytically active surfaces and high retention in its interior. As a result, good catalytic activities with long-term stability and reusability are achieved. Additionally, developed free-standing hybrids avoid undesired media contamination effects originating from the release of nanoscale particles. The upcycling of discarded cellulosic materials, such as the ones of masks, into high-added-value catalytic materials, results an efficient approach to lessen the waste´s hazards of plastics while enhancing their functionality. Interestingly, this procedure can be extended to the upcycling of other systems (cellulosic or not), opening the path to greener manufacturing approaches of catalytic materials. Graphical abstract A novel approach to upcycle discarded cellulosic surgical masks is proposed, providing a solution to reduce the undesired accumulation of discarded face masks originating from the COVID-19 pandemic. The non-woven cellulosic layer formed by fibers is used as solid support for the controlled deposition of catalytically active titanium dioxide (TiO2), iron oxide (FexOy), and cobalt oxide (CoOx) nanoparticles. Cellulosic porous materials are proven useful for the photocatalytic decomposition of organic dyes, while their peroxidase-like activity opens the door to advanced applications such as electrochemical sensors. The upcycling of cellulose nonwoven fabrics into value-added catalytic materials lessens the waste´s hazards of discarded materials while enhancing their functionality.

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“…The results indicates that these novel nanocomposite electrolytes showed slightly higher performance than some of the commercial and separators which are studied in academic literature, for instance crosslinked photocured fibrous polymer electrolyte 6 × 10 −4 S cm −1 , PP‐based network 0.65 × 10 −3 S cm −1 , and so forth . Additionally, due to its properties such as high porosity and high electrolyte uptake samples showed higher conductivity compared to Celgard 2400 (0.11 × 10 −3 ) . There was another element that we used to reduce T g , which increase lithium ion mobility in the electrolyte which results in increase of ionic conductivity and this element was using EC and DMC solvents .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and ionic conductivity of electrospun organic–inorganic hybrid gel electrolytes

Aytan

Uğur

Kayaman‐Apohan

2019

Polymer Engineering & Sci

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In this work, we described the synthesis of organic–inorganic hybrid gel electrolytes combining electrospinning, sol–gel, and ultraviolet (UV) curing techniques in order to investigate their ionic conductivity properties. First, 3‐glycidyloxypropyl trimethoxysilane modified polyamic acid and alkoxysilane functional poly(dimethyl siloxane) were electrospun together. Then, the following thermal imidization, the obtained fiber was cured in the UV curable gel formulation. To improve the interaction between fiber and gel matrix, 3‐(trimethoxysilyl)propyl methacrylate was partly hydrolyzed and then used as a bifunctional crosslinker. Finally, the membrane was soaked into 0.5 M LiFP6 salt solution to obtain organic–inorganic hybrid gel electrolytes. The chemical structure, ionic conductivity, and range of electrochemical stability window of the photocured nanocomposite electrolytes were investigated by using FTIR, thermogravimetric analysis, differential scanning calorimetry, electrochemical impedance spectroscopy, linear sweep voltammetry, and SEM analysis. The acquired results from experiments indicate that a convenient nanocomposite electrolyte for lithium‐ion batteries with high electrolyte (Li salt) uptake, adequate conductivity (1.02 × 10−3 S cm−1) at ambient temperature and electrochemically stable between 1 and 6 V had been prepared. POLYM. ENG. SCI., 60:619–629, 2020. © 2019 Society of Plastics Engineers

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Electrospun sandwich polysulfonamide/polyacrylonitrile/polysulfonamide composite nanofibrous membranes for lithium-ion batteries

Abstract: The demands for novel approaches that ensure stability in lithium-ion batteries are increasing and have led to the development of new materials and fabrication strategies.

Cited by 36 publications

References 34 publications

Stable Na Electrodeposition Enabled by Agarose-Based Water-Soluble Sodium Ion Battery Separators

Stable Na Electrodeposition Enabled by Agarose-Based Water-Soluble Sodium Ion Battery Separators

Upcycling discarded cellulosic surgical masks into catalytically active freestanding materials

Synthesis, characterization, and ionic conductivity of electrospun organic–inorganic hybrid gel electrolytes

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