取代二氧戊环的随机共聚：高性能聚合物电解质的合理设计

IF 4.4 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Applied Polymer Materials Pub Date : 2024-10-30 DOI:10.1021/acsapm.4c0292810.1021/acsapm.4c02928

Haley J. Rugh, Emily E. Abdo, Jaeyong Lee, Cheol Kang, Juliana N. Bem, Nitash P. Balsara* and Geoffrey W. Coates*,

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引用次数: 0

摘要

聚合物电解质可提高锂离子电池系统的安全性，但目前最先进的基于聚（环氧乙烷）的聚合物电解质无法达到实际应用所需的电化学性能。我们通过在一系列聚（1,3-二氧戊环）（PDXL）基共聚物的骨架中引入甲基取代基，探究了取代基密度对电解质性能的影响。1,3-二氧戊环（DXL）和 4-甲基-1,3-二氧戊环（MeDXL）的聚合反应产生了一系列无规共聚物，当 MeDXL 含量超过 10%时，共聚物呈无定形状态。与 PDXL 或聚（环氧乙烷）（PEO）相比，掺入 10% 和 20% MeDXL 的共聚物显示出更高的功效，这突出表明甲基取代基可用于控制聚合物电解质的电化学特性。

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Random Copolymerization of Substituted Dioxolanes: Rational Design of High-Performance Polymer Electrolytes

Polymer electrolytes enhance the safety of lithium-ion battery systems, but current state-of-the-art poly(ethylene oxide)-based polymer electrolytes fail to achieve the electrochemical properties necessary for practical applications. We probed the impact of substituent density on the electrolyte performance by introducing methyl substituents into the backbone of a series of poly(1,3-dioxolane) (PDXL)-based copolymers. The polymerization of 1,3-dioxolane (DXL) and 4-methyl-1,3-dioxolane (MeDXL) yielded a series of random copolymers that were amorphous above 10% MeDXL incorporation. The copolymers with 10 and 20% MeDXL incorporation exhibited higher efficacies than those of either PDXL or poly(ethylene oxide) (PEO), highlighting the use of methyl substituents to control the electrochemical properties of polymer electrolytes.

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.