Porous polymer electrolytes with high ionic conductivity and good mechanical property for rechargeable batteries

Liang, Bo; Jiang, Qingbai; Tang, Siqi; Li, Shengliang; Chen, Xu

doi:10.1016/j.jpowsour.2015.12.127

Cited by 47 publications

(33 citation statements)

References 47 publications

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“…Unfortunately, the excellent conduction performance was hampered by the brittleness of the membranes. This finding was in line with previously reported studies confirming that high porosity leads to a decrease of both storage modulus and tensile strength 8,[25][26] . Similar drawbacks are commonly alleviated by using of supports with optimized pore architecture.…”

Section: Introductionsupporting

confidence: 94%

Hierarchical Porous Polybenzimidazole Microsieves: An Efficient Architecture for Anhydrous Proton Transport via Polyionic Liquids

Kallem

Drobek

Julbe

et al. 2017

ACS Appl. Mater. Interfaces

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Liquid-induced phase-separation micromolding (LIPSμM) has been successfully used for manufacturing hierarchical porous polybenzimidazole (HPBI) microsieves (42-46% porosity, 30-40 μm thick) with a specific pore architecture (pattern of macropores: ∼9 μm in size, perforated, dispersed in a porous matrix with a 50-100 nm pore size). Using these microsieves, proton-exchange membranes were fabricated by the infiltration of a 1H-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide liquid and divinylbenzene (as a cross-linker), followed by in situ UV polymerization. Our approach relies on the separation of the ion conducting function from the structural support function. Thus, the polymeric ionic liquid (PIL) moiety plays the role of a proton conductor, whereas the HPBI microsieve ensures the mechanical resistance of the system. The influence of the porous support architecture on both proton transport performance and mechanical strength has been specifically investigated by means of comparison with straight macroporous (36% porosity) and randomly nanoporous (68% porosity) PBI counterparts. The most attractive results were obtained with the poly[1-(3H-imidazolium)ethylene]bis(trifluoromethanesulfonyl)imide PIL cross-linked with 1% divinylbenzene supported on HPBI membranes with a 21-μm-thick skin layer, achieving conductivity values up to 85 mS cm at 200 °C under anhydrous conditions and in the absence of mineral acids.

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Section: Introductionsupporting

confidence: 94%

Hierarchical Porous Polybenzimidazole Microsieves: An Efficient Architecture for Anhydrous Proton Transport via Polyionic Liquids

Kallem

Drobek

Julbe

et al. 2017

ACS Appl. Mater. Interfaces

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“…The underlying rationale is based on the pore-filling electrolyte membrane concept proposed by Yamaguchi for fuel cross-over suppression on direct methanol fuel cells 45 . The consecution of a polymeric container with optimized pore architecture is extremely essential 46 since the performance of PEM based on immersing a porous support into ILs, mainly depends on the porous structure. Thus, the present work aims to improve both, the ion conductivity and the dimensional stability of the PIL supported membranes by a proper design of the porous architecture.…”

Section: Purpose Of This Work: In Situ Polymerization Of Ils On Pbi Mmentioning

confidence: 99%

Constructing Straight Polyionic Liquid Microchannels for Fast Anhydrous Proton Transport

Kallem

Eguizábal

Mallada

et al. 2016

ACS Appl. Mater. Interfaces

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Polymeric ionic liquids (PILs) have triggered great interest as all solid-state flexible electrolytes because of safety and superior thermal, chemical, and electrochemical stability. It is of great importance to fabricate highly conductive electrolyte membranes capable to operate above 120 °C under anhydrous conditions and in the absence of mineral acids, without sacrificing the mechanical behavior. Herein, the diminished dimensional and mechanical stability of poly[1-(3H-imidazolium)ethylene]bis(trifluoromethanesulfonyl)imide has been improved thanks to its infiltration on a polybenzimidale (PBI) support with specific pore architecture. Our innovative solution is based on the synergic combination of an emerging class of materials and sustainable large-scale manufacturing techniques (UV polymerization and replication by microtransfer-molding). Following this approach, the PIL plays the proton conduction role, and the PBI microsieve (SPBI) mainly provides the mechanical reinforcement. Among the resulting electrolyte membranes, conductivity values above 50 mS·cm at 200 °C and 10.0 MPa as tensile stress are shown by straight microchannels of poly[1-(3H-imidazolium)ethylene]bis(trifluoromethanesulfonyl)imide cross-linked with 1% of dyvinylbenzene embedded in a PBI microsieve with well-defined porosity (36%) and pore diameter (17 μm).

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“…[14][15][16] To address these issues, solid-state electrolytes (SSEs) such as ion-conducting inorganic ceramics, [17,18] organic polymers, [4,19] and ceramic-composites [5,20,21] have been investigated as alternatives to liquid electrolytes. [24] However, at room temperature (RT), polymer electrolytes have low ionic conductivities (< 10 À5 S cm À1 ) and a low cation transference number (0. [19,22,23] For example, a porous polymer membrane doped with phytic acid showed a critical tensile strength of 20.71 MPa with an elongation-at-break value of 45.7 %.…”

Section: Introductionmentioning

confidence: 99%

A Ceramic‐PVDF Composite Membrane with Modified Interfaces as an Ion‐Conducting Electrolyte for Solid‐State Lithium‐Ion Batteries Operating at Room Temperature

Kwok

et al. 2018

ChemElectroChem

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Solid-state batteries hold great promise because of their safety and high projected energy density. However, the sizeable interfacial resistance between the electrodes and the electrolyte of such batteries is a significant bottleneck in the development of this technology. In this work, we develop a Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) and polyvinylidene fluoride (PVDF) solid-state composite membrane characterized by high conductivity, tensile strength, and flexibility as well as low impedance if interfacially modified by a minute amount of liquid electrolyte. A solid-state lithium-ion battery using this electrolyte with LiFePO 4 and Li as electrodes delivers excellent rate capability and cycling stability at room temperature. In particular, the battery shows an initial discharge capacity of 155 mAh g À1 and, after 100 cycles at 1C, of 145 mAh g À1 . Even at 4C, the discharge capacity is 96 mAh g À1 . Our study suggests that the interfacially modified LLZTO-PVDF membrane is a promising electrolyte for solid-state lithium-ion batteries.

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Porous polymer electrolytes with high ionic conductivity and good mechanical property for rechargeable batteries

Cited by 47 publications

References 47 publications

Hierarchical Porous Polybenzimidazole Microsieves: An Efficient Architecture for Anhydrous Proton Transport via Polyionic Liquids

Hierarchical Porous Polybenzimidazole Microsieves: An Efficient Architecture for Anhydrous Proton Transport via Polyionic Liquids

Constructing Straight Polyionic Liquid Microchannels for Fast Anhydrous Proton Transport

A Ceramic‐PVDF Composite Membrane with Modified Interfaces as an Ion‐Conducting Electrolyte for Solid‐State Lithium‐Ion Batteries Operating at Room Temperature

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