Polymer/ceramic co-continuous nanofiber membranes via room-curable organopolysilazane for improved lithium-ion battery performance

Smith, Soshana; Park, Jay Hoon; Williams, Brian P.; Joo, Yong Lak

doi:10.1007/s10853-016-0574-4

Cited by 24 publications

(18 citation statements)

References 43 publications

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“…The PAN/DMF solution was prepared by dissolving PAN (10 wt%) in DMF under magnetic stirring for 4 h at 90 C and then le to cool to room temperature. Different contents of the as-prepared BM sol (10,20,30,40 wt% based on PAN) were added to the PAN/DMF solution and stirring continued for 8 h at 90 C to form a homogeneous dispersed BM/PAN electrospinning solution. Aer sitting overnight to remove any bubbles within the solution, the BM/PAN solution was electrospun using a 21 gauge needle at a feed rate of 0.65 mL h À1 for each BM/PAN solution and 0.76 mL h À1 for the pure PAN solution.…”

Section: Preparation Of Bm/pan Composite Nanober Membranementioning

confidence: 99%

“…Separators with ceramics have shown excellent electrochemical performance due to the increasing surface area and the deterring polymer crystallization, which signicantly increase the ionic conductivity of membranes. 30 Furthermore, the introduction of inorganic particles can absorb hydrogen uoride from electrolyte during charge/discharge cycles. 31 Boehmite (g-AlOOH) is a layered structure material with octahedral AlO 6 units and numerous surface-located -OH groups.…”

Section: Introductionmentioning

confidence: 99%

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High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

Chen

Xia

et al. 2020

RSC Adv.

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Section: Preparation Of Bm/pan Composite Nanober Membranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

Chen

Xia

et al. 2020

RSC Adv.

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“…[1,5] Compared with PP and PE separators, polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) separators prepared through the phase-inversion method have ah igherp orosity,b etter wettability,a nd better electrochemical stability owing to their porous structure and good affinity to liquid electrolytes. [10][11][12][13][14] However,P VDF-HFP separators prepared through the phase-inversion method still face many restrictions owing to their high cost, complex process, poor mechanical properties, and low long-term stability. [10][11][12][13][14] However,P VDF-HFP separators prepared through the phase-inversion method still face many restrictions owing to their high cost, complex process, poor mechanical properties, and low long-term stability.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9] The mechanical properties and ionic conductivity can be improved by modifying the phase-inversion methodw ith additives or pore-forming materials. [10][11][12][13][14] However,P VDF-HFP separators prepared through the phase-inversion method still face many restrictions owing to their high cost, complex process, poor mechanical properties, and low long-term stability. [6,[15][16][17] In this article, we propose an efficient methodt op repare highly stable PVDF-HFP separators.…”

Section: Introductionmentioning

confidence: 99%

A Highly Stable Separator from an Instantly Reformed Gel with Direct Post‐Solidation for Long‐Cycle High‐Rate Lithium‐Ion Batteries

et al. 2019

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An efficient, scalable, and cost‐effective approach was developed to synthesize a hierarchically constructed polyvinylidene fluoride‐hexafluoropropylene (PVDF–HFP) separator from an instantly reformed solution. With partially dissolved PVDF–HFP as separator skeleton, the incorporation of warm PVDF–HFP solution in acetone led to a cross‐linked structure before N‐methyl‐2‐pyrrolidone (NMP) was added to solidify the hierarchical inner‐bound structure of fresh PVDF–HFP. Owing to its hierarchical microporous structure, the separator exhibited remarkable wettability with a small contact angle of 18° and an electrolyte uptake of 114.81 %, leading to a high room‐temperature ionic conductivity of 3.27×10−3 S cm−1. The hierarchical structure provided short pathways for efficient ion transfer with more electrolyte trapped inside and small intervals between adjacent nanopores. The separator outperformed commercial separators, showing high rate capacities of 104.8 mAh g−1 at 5 C and 95 mAh g−1 at 10 C as well as unparalleled perfect capacity retention at 10 C after 1000 cycles.

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“…Among the preparation methods of separators, that is, dry processing, 13 wet processing, 14 phase conversion processing, 15 and electrospinning, 16 electrospinning has the lowest cost; more interestingly, which is the only method that can directly produce nanofiber-type membranes. 16 Researchers have proved that electrospun membranes have significantly improved ionic conductivity 17 and cycling performance 18 owing to their high porosity, 19 small pores, 20 small size, and large specific surface area. 21 Electrospinning membranes based on heat resistant polymers (polyimide (PI), 22,8,23 poly (m-phenylene isophthalamide) (PMIA), [24][25][26][27] poly (vinylidene fluoride), [28][29][30] poly (phthalazine ether sulfone ketone), 31,32 etc.)…”

mentioning

confidence: 99%

Achieving superiorly highheat‐dimensionalstability, high strength, and good electrochemical performance for electrospun separators in powerlithium‐ionbattery through building unique condensed structure based on polyimide and poly (m‐phenylene isophthalamide)

Yuan

Liang

et al. 2021

J of Applied Polymer Sci

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It is still a challenge for simultaneously achieving high heat resistance, high strength and outstanding electrochemical performance for separators in power lithium-ion battery (PLB). Herein, new high performance electrospun separators are developed through building unique structure based on polyimide (PI) and poly (m-phenylene isophthalamide) (PMIA). Orthogonal tests (4 4 ) show that the magnitude order of electrospinning factors on the morphology of membrane is concentration>injection rate>receiving distance>voltage. With the optimum factors, the electrospun membrane (PI/PMIA) was prepared, which was further pressed at 100 C for 10 min to get treated membrane (H-PI/ PMIA). Interestingly, the comprehensive performance of PI/PMIA is not a simple combination of those of PI and PMIA; instead, PI/PMIA has much better thermal and mechanical properties than both PI and PMIA, proving that PI/PMIA has a synergistic effect. PI/PMIA and H-PI/PMIA not only have good ionic conductivity and electrochemical stability, but also have superiorly high properties including dimensional stability (thermal shrinkage temperature>300 C), tensile strengths (24.1 MPa for PI/PMIA, 34.3 MPa for H-PI/PMIA) and capacity retentions (97.9%, 99.2%) compared with electrospun membranes for PLBs reported in the literature so far (SCI database). The mechanism behind these attractive performances is discussed from condensed structure of membranes. K E Y W O R D Sbatteries and fuel cells, membranes, structure-property relationships | INTRODUCTIONBesides the wide applications in electronic and electrical fields, lithium-ion battery is becoming one main power source and expected to replace petroleum. 1 Separator is not only the key component, which is also key factor of determining the heat resistance, safety, efficiency, and cycling performance of power lithium-ion battery (PLB). 2

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Polymer/ceramic co-continuous nanofiber membranes via room-curable organopolysilazane for improved lithium-ion battery performance

Cited by 24 publications

References 43 publications

High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

A Highly Stable Separator from an Instantly Reformed Gel with Direct Post‐Solidation for Long‐Cycle High‐Rate Lithium‐Ion Batteries

Achieving superiorly highheat‐dimensionalstability, high strength, and good electrochemical performance for electrospun separators in powerlithium‐ionbattery through building unique condensed structure based on polyimide and poly (m‐phenylene isophthalamide)

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