Crosslinked polyimide asymmetric membranes as thermally-stable separators with self-protective layers and inhibition of lithium dendrite growth for lithium metal battery

Tsai, Chi-Yang; Liu, Ying‐Ling

doi:10.1016/j.memsci.2021.119816

Cited by 26 publications

(13 citation statements)

References 56 publications

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“…In comparison to the 100-cycle test, the cell containing the Celgard 2400 membrane exhibited discharge and retention capacities, which were 81 mAh/g and around 96%, respectively. The remarkable improvement in the cycling performance of the 2 wt % SC/biomembrane was attributed to the synergetic impact on the high electrolyte affinity of the hydrophilic SC particle and interconnected porous structure that obstructed the growth of Li dendrites, reduced the charge transfer resistance, and optimized Li + ion transport pathways of LIBs, endowing the battery with better performance at higher charge and discharge rates with longer cycle stability. , The superior discharge capacity and cycling performance corresponded to the higher ionic conductivity, better interfacial compatibility of the electrolyte-soaked SC/biomembranes, and OCV profile. As shown in Table , it can be clearly seen that the SC/biomembrane in this work exhibited outstanding electrical performance, which was comparable to those of the reported cellulose-based separator membranes.…”

Section: Results and Discussionmentioning

confidence: 99%

Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

Thiangtham

Saito

Manuspiya

2022

ACS Appl. Energy Mater.

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Biomembranes based on sulfonated cellulose (SC) blended with PLA/PBS composites were fabricated with different SC contents into polymer matrices. The obtained membranes were applied as separators in lithium-ion batteries (LIBs). The porosities of SC/biomembranes with 0.5, 1, and 2 wt % SC contents were estimated to be 66.6, 73.4, and 87.7%, respectively, which are significantly greater than that of the Celgard 2400 membrane, a commercial monolayer polypropylene (PP) separator membrane (42.1%). Due to its high porosity, hydrophilicity, and good interfacial compatibility with electrodes, the SC/biomembranes offer high electrolyte uptake and low interfacial resistance, leading to enhanced ionic conductivity. The cell with the 2 wt % SC/biomembrane also exhibited stable cycle performance and improved rate capacity, especially when discharged at the 0.2C rate. A 106 mAh/g capacity retention rate was achieved for a battery with the 2 wt % SC/biomembrane after 100 cycles at the 1C rate; meanwhile, the Celgard 2400 membrane exhibited a capacity of 81 mAh/g. These results show that SC has great innovative potential for use as a biofiller in biomembranes, which is suitable for LIB applications.

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Section: Results and Discussionmentioning

confidence: 99%

Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

Thiangtham

Saito

Manuspiya

2022

ACS Appl. Energy Mater.

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“…28 Through this method, separators with high porosity and uniform pore size distribution can be prepared. 29,30 In addition, this method exhibits low cost and easy operation, which is of very significance for its commercial application.…”

Section: Resultsmentioning

confidence: 99%

“…After phase inversion, the polymer‐rich phase becomes membrane matrix and the polymer‐lean phase becomes pores, forming a porous membrane 28 . Through this method, separators with high porosity and uniform pore size distribution can be prepared 29,30 . In addition, this method exhibits low cost and easy operation, which is of very significance for its commercial application.…”

Section: Resultsmentioning

confidence: 99%

Amino‐functionalized SiO ₂ modified porous polyetherimide separator for high performance Li‐S batteries

Liu

Zeng

et al. 2022

Intl J of Energy Research

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As one of the most promising energy storage systems, the application of lithium sulfur battery is hindered by low ionic conductivity, poor thermal stability, and a serious shuttle effect of polysulfide species of commercial polyolefin separators. Herein, a kind of novel porous polyetherimide (PEI) based separator (IAPEI-4) with excellent heat resistance and electrochemical properties was prepared. Briefly, by grafting amino group (-NH 2 ) onto the surface of SiO 2 , highly dispersed amino-functionalized SiO 2 (A-SiO 2 ) were synthesized as fillers to blend PEI matrix. Based on physical characterizations of the representative IAPEI-4 separator, abundant micropores and mesopores exist in the separator, and A-SiO 2 nanoparticles are uniformly distributed in the PEI matrix. The ameliorated Li + transport channels and the uniform distribution of A-SiO 2 nanoparticles endow IAPEI-4 separator with higher ionic conductivity (1.60 mS cm À1 ) and Li + transfer number (0.63). Besides, the IAPEI-4 separator exhibits good electrochemical stability and excellent thermal stability (no shrinkage at 200 C). The Li-S cells with the IAPEI separator also show greatly enhanced electrochemical performances. After 100 cycles, its specific discharge capacity can reach 695.4 mAh g À1 at 0.2 C and its capacity retention rate is 84.8%. This simple and effective separator modification method can provide a general strategy to achieve high-performance Li-S batteries.

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“…GPEs with low t Li + values might form a significant Li-ion concentration gradient near the anode, consequently to result in formation of lithium dendrites. Designs and approaches aiming at GPEs featuring high t Li + values have received research attention to minimize lithium dendrite formation and enhance the interfacial stability and lifespan. − Although the “single-ion” approach is attractive to demonstrate high t Li + , special designs and synthesis of electrolytes are required to immobilize the anions of electrolytes on polymer chains, cross-linked domains, and nanoadditives. ,, On the other hand, porous and mechanically strong GPEs also demonstrate the ability to depress lithium dendrite growth. − As a result, high t Li + values are expected for this class of GPEs to exhibit a synergistic effect on depression of formation of lithium dendrite.…”

Section: Introductionmentioning

confidence: 99%

Gel Polymer Electrolytes Based on an Interconnected Porous Matrix Functionalized with Poly(ethylene glycol) Brushes Showing High Lithium Transference Numbers for High Charging-Rate Lithium Ion Batteries

Chang

Liu

2022

ACS Sustainable Chem. Eng.

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Gel polymer electrolytes (GPEs) with a high ionic conductivity and a high lithium transference number (t Li + ) are highly expected for lithium ion batteries to exhibit high lithium ion conduction efficiency and depression on lithium dendrite formation. In this work, a 3-dimensional interconnected porous poly(vinylidene difluoride) (PVDF) membrane grafted with brushlike poly(ethylene glycol) (PEG) segments on pore walls has been prepared and utilized as the porous polymer matrix for GPEs. The interconnected porous structure and grafted PEG segments form conduction channels and interfacial transport pathways for ions, contributing to high ionic conductivities. The brush-like PEG structure obstructs the anion motion in the ion-conduction channels, bringing high t Li + values to the resulting GPEs. The prepared GPEs exhibit an ionic conductivity and a t Li + value of 2.39 mS cm −1 and 0.82, respectively. Consequently, the batteries employing the GPEs exhibit noteworthy cell performance including a capacity of 95 mAh g −1 under 15C, an initial capacity retention above 72.5%, and a Coulombic efficiency of 99.2% after a 400-cycle test at 2C. Moreover, the cells could stably work for more than 600 h at a constant current density of 0.2 mA cm −2 with overpotential values lower than 15 mV. The result indicates the extreme stability and subtle voltage polarization without short circuiting contributed from the restriction of lithium dendrite growth. A structure design concept for high performance GPEs has been demonstrated.

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Crosslinked polyimide asymmetric membranes as thermally-stable separators with self-protective layers and inhibition of lithium dendrite growth for lithium metal battery

Cited by 26 publications

References 56 publications

Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

Amino‐functionalized SiO ₂ modified porous polyetherimide separator for high performance Li‐S batteries

Gel Polymer Electrolytes Based on an Interconnected Porous Matrix Functionalized with Poly(ethylene glycol) Brushes Showing High Lithium Transference Numbers for High Charging-Rate Lithium Ion Batteries

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Crosslinked polyimide asymmetric membranes as thermally-stable separators with self-protective layers and inhibition of lithium dendrite growth for lithium metal battery

Cited by 26 publications

References 56 publications

Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

Amino‐functionalized SiO 2 modified porous polyetherimide separator for high performance Li‐S batteries

Gel Polymer Electrolytes Based on an Interconnected Porous Matrix Functionalized with Poly(ethylene glycol) Brushes Showing High Lithium Transference Numbers for High Charging-Rate Lithium Ion Batteries

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Amino‐functionalized SiO ₂ modified porous polyetherimide separator for high performance Li‐S batteries