Bifunctional poly(ethylene glycol) based crosslinked network polymers as electrolytes for all‐solid‐state lithium ion batteries

2019 ◽  
Vol 68 (4) ◽  
pp. 684-693 ◽  
Author(s):  
Manjit Singh Grewal ◽  
Manabu Tanaka ◽  
Hiroyoshi Kawakami
Keyword(s):  
Solid State ◽  
Ethylene Glycol ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Poly Ethylene Glycol ◽  
Network Polymers ◽  
Poly Ethylene

Novel composite polymer electrolytes containing poly(ethylene glycol)-grafted graphene oxide for all-solid-state lithium-ion battery applications

2014 ◽  
Vol 2 (34) ◽  
pp. 13873-13883 ◽  
Author(s):  
Jimin Shim ◽  
Dong-Gyun Kim ◽  
Hee Joong Kim ◽  
Jin Hong Lee ◽  
Ji-Hoon Baik ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Ethylene Glycol ◽  
Lithium Ion Battery ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Composite Polymer ◽  
Poly Ethylene Glycol ◽  
Composite Polymer Electrolytes ◽  
Poly Ethylene

A series of composite polymer electrolytes containing poly(ethylene glycol)-grafted graphene oxide fillers were prepared for all-solid-state lithium-ion battery applications.

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

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 15
Author(s):  
Sandugash Kalybekkyzy ◽  
Al-Farabi Kopzhassar ◽  
Memet Vezir Kahraman ◽  
Almagul Mentbayeva ◽  
Zhumabay Bakenov
Keyword(s):  
Ethylene Glycol ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Potential Candidate ◽  
Poly Ethylene Glycol ◽  
Glycol Diacrylate ◽  
Wide Range ◽  
Poly Ethylene

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.

scholarly journals Synthesis of Network Polymers by Means of Addition Reactions of Multifunctional-Amine and Poly(ethylene glycol) Diglycidyl Ether or Diacrylate Compounds

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2047
Author(s):  
Naofumi Naga ◽  
Mitsusuke Sato ◽  
Kensuke Mori ◽  
Hassan Nageh ◽  
Tamaki Nakano
Keyword(s):  
Ethylene Glycol ◽  
Room Temperature ◽  
Addition Reaction ◽  
Monomer Concentration ◽  
Diglycidyl Ether ◽  
Porous Polymers ◽  
Addition Reactions ◽  
Poly Ethylene Glycol ◽  
Network Polymers ◽  
Poly Ethylene

Addition reactions of multi-functional amine, polyethylene imine (PEI) or diethylenetriamine (DETA), and poly(ethylene glycol) diglycidyl ether (PEGDE) or poly(ethylene glycol) diacrylate (PEGDA), have been investigated to obtain network polymers in H2O, dimethyl sulfoxide (DMSO), and ethanol (EtOH). Ring opening addition reaction of the multi-functional amine and PEGDE in H2O at room temperature or in DMSO at 90 °C using triphenylphosphine as a catalyst yielded gels. Aza-Michael addition reaction of the multi-functional amine and PEGDA in DMSO or EtOH at room temperature also yielded corresponding gels. Compression test of the gels obtained with PEI showed higher Young’s modulus than those with DETA. The reactions of the multi-functional amine and low molecular weight PEGDA in EtOH under the specific conditions yielded porous polymers induced by phase separation during the network formation. The morphology of the porous polymers could be controlled by the reaction conditions, especially monomer concentration and feed ratio of the multi-functional amine to PEGDA of the reaction system. The porous structure was formed by connected spheres or a co-continuous monolithic structure. The porous polymers were unbreakable by compression, and their Young’s modulus increased with the increase in the monomer concentration of the reaction systems. The porous polymers absorbed various solvents derived from high affinity between the polyethylene glycol units in the network structure and the solvents.

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