Facile fabrication and characterization of polyimide nanofiber reinforced photocured hybrid electrolyte for Li‐ion batteries

Aytan, Emre; Uğur, Mustafa Hulusi; Kayaman‐Apohan, Nilhan

doi:10.1002/pat.4086

Cited by 8 publications

(5 citation statements)

References 54 publications

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“…[85][86][87] Besides, siloxanes have been adopted as a bridge for 3D cross-linked gel polymer electrolytes to increase the ion mobility by increasing the amorphous area. [88][89][90] In short, micromolecular silane and siloxane are competitive alternatives for liquid electrolytes due to their own characteristics.…”

Section: Micromolecule Silane and Siloxanementioning

confidence: 99%

Organosilicon‐Based Functional Electrolytes for High‐Performance Lithium Batteries

Wang

Chen

et al. 2021

Advanced Energy Materials

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Nowadays excessive consumption of fossil fuels due to population growth and industrial development induced serious energy and environmental crisis. To alleviate the ecological crisis and comply with the ever-increasing energy demand, developingThe electrolyte has been considered as a key factor toward higher energy density for Li-ion and Li-metal batteries. However, conventional electrolytes suffer from uncontrolled interfacial reactions and irreversible decomposition causing performance deterioration and potential safety hazard. Organosilicon compounds have attracted great interest as promising electrolyte components due to facile chemical modifications, low glass transition temperatures (T g ), superior chemical, and thermal stabilities. Considerable investigation efforts have been devoted to developing better overall performance of organosilicon-based electrolytes in the past few years. Herein, the recent research progress of organosilicon-based functional electrolytes for the development of liquid, gel, and solid state electrolytes in Li-ion and Li-metal batteries is summarized. Attention is devoted to various types of organosilicon such as silane, siloxane, polysiloxane, and polyhedral oligomeric silsesquioxanes in terms of molecular design, ionic conductivity, functions shown in batteries, thermal, chemical, electrochemical stability, safety, etc. The feasible strategies are also discussed that may promote the comprehensive electrochemical performances of organosilicon-based electrolytes in different types of electrolytes and batteries. Finally, the challenges facing organosilicon-based electrolytes and proposed their possible solutions are presented alongside promising development directions.

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Section: Micromolecule Silane and Siloxanementioning

confidence: 99%

Organosilicon‐Based Functional Electrolytes for High‐Performance Lithium Batteries

Wang

Chen

et al. 2021

Advanced Energy Materials

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“…Cross-linked polymers provide many advantages, including improved thermal stability, enhanced mechanical strength, and elimination of crystallinity. Among the various polymerization processes, UV-assisted radical polymerization (UV-photopolymerization) is an economical, fast, and nontoxic method, especially for networked polymer fabrication [30]. It is a room temperature curing process with rapid solidification of the polymer film, within several seconds or minutes, thus reducing overall energy and space consumption.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of UV-Crosslinked Flexible Solid Polymer Electrolyte with PDMS for Li-Ion Batteries

et al. 2020

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Conventional carbonate-based liquid electrolytes have safety issues related to their high flammability and easy leakage. Therefore, it is essential to develop alternative electrolytes for lithium-ion batteries (LIBs). As a potential candidate, solid-polymer electrolytes (SPEs) offer enhanced safety characteristics, while to be widely applied their performance still has to be improved. Here, we have prepared a series of UV-photocrosslinked flexible SPEs comprising poly(ethylene glycol) diacrylate (PEGDA), trimethylolpropane ethoxylate triacrylate (ETPTA), and lithium bis(trifluoromethane sulfonyl)imide (LiTFSI) salt, with the addition of polydimethylsiloxane with acrylated terminal groups (acryl-PDMS) to diminish the crystallinity of the poly(ethylene glycol) chain. Polysiloxanes have gained interest for the fabrication of SPEs due to their unique features, such as decrement of glass transition temperature (Tg), and the ability to improve flexibility and facilitate lithium-ion transport. Freestanding, transparent SPEs with excellent flexibility and mechanical properties were achieved without any supporting backbone, despite the high content of lithium salt, which was enabled by their networked structure, the presence of polar functional groups, and their amorphous structure. The highest ionic conductivity for the developed cross-linked SPEs was 1.75 × 10−6 S cm−1 at room temperature and 1.07 × 10−4 S cm−1 at 80 °C. The SPEs demonstrated stable Li plating/stripping ability and excellent compatibility toward metallic lithium, and exhibited high electrochemical stability in a wide range of potentials, which enables application in high-voltage lithium-ion batteries.

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“…Stability, flexibility, and ionic interaction ability of crosslinked membrane structure was supported and increased by incorporation of PEO (─CH 2 ─CH 2 ─O─) from photocurable resin and PDMS (─Si─O─Si─) content. In our previous research, we investigated the effect of PEGDA on chemical stability . In this case, the addition of PDMS has made the pores of the membranes easier to interact with lithium ions and make them more stable, therefore the electrolyte solution would be easily kept in the pores of electrolytes and turned them into very stable against anodic oxidation.…”

Section: Resultsmentioning

confidence: 99%

“…In our previous work, we tried to achieve to tried to combine better properties and used the advantages of GPEs (lower T g value but lower thermal stability) and PI (higher T g value but higher thermal stability) by placing a highly stable PI fibers into UV curable resin which contains high content of PEO without any covalent bond . Considering the results of our previous study, here we aimed to improve the performance by binding fibers and UV curable resin covalently via sol–gel technique.…”

Section: Introductionmentioning

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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Facile fabrication and characterization of polyimide nanofiber reinforced photocured hybrid electrolyte for Li‐ion batteries

Cited by 8 publications

References 54 publications

Organosilicon‐Based Functional Electrolytes for High‐Performance Lithium Batteries

Organosilicon‐Based Functional Electrolytes for High‐Performance Lithium Batteries

Fabrication of UV-Crosslinked Flexible Solid Polymer Electrolyte with PDMS for Li-Ion Batteries

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

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