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用于锂电源的基于聚氨酯离聚物的凝胶聚合物电解质。

Gel-polymer electrolytes based on polyurethane ionomers for lithium power sources.

作者信息

Davletbaeva I M, Nizamov A A, Yudina A V, Baymuratova G R, Yarmolenko O V, Sazonov O O, Davletbaev R S

机构信息

Kazan National Research Technological University 68 Karl Marx Str. Kazan Republic of Tatarstan 420015 Russian Federation

Institute of Problems of Chemical Physics of RAS Acad. Semenov Avenue 1, Chernogolovka Moscow Region 142432 Russian Federation.

出版信息

RSC Adv. 2021 Jun 17;11(35):21548-21559. doi: 10.1039/d1ra01312b. eCollection 2021 Jun 15.

DOI:10.1039/d1ra01312b
PMID:35478804
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9034089/
Abstract

Polyurethanes based on the aminoethers of -phosphoric acid and polyisocyanates of an aliphatic nature were studied as a substrate for the preparation of new polymer electrolyte. The conductivity of polyurethane ionomer samples obtained using the optimal amount of aliphatic polyisocyanates and after keeping them in a 1 M LiBF solution in γ-butyrolactone reaches 0.62 mS cm. It has been established that the transport of positively charged ions through the polymer matrix is due to the formation of clusters of phosphate ions and their association into the conducting channels. The introduction of carboxylate ions into the conducting channels by modifying the aminoethers of -phosphoric acid with phthalic anhydride leads to an increase in their size and rise in the mobility of cations. As a result, the conductivity of polyurethane gel electrolytes increased to 2.1 mS cm.

摘要

研究了基于磷酸氨基醚和脂肪族多异氰酸酯的聚氨酯作为制备新型聚合物电解质的基质。使用最佳量的脂肪族多异氰酸酯获得的聚氨酯离聚物样品，在γ-丁内酯中的1 M LiBF溶液中保存后，其电导率达到0.62 mS/cm。已经确定，带正电荷的离子通过聚合物基质的传输是由于磷酸根离子形成簇并缔合进入导电通道。用邻苯二甲酸酐对磷酸氨基醚进行改性，将羧酸根离子引入导电通道，导致通道尺寸增加和阳离子迁移率提高。结果，聚氨酯凝胶电解质的电导率提高到2.1 mS/cm。

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