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基于深共晶溶剂和多金属酸盐的半固态超质子超分子聚合物电解质
作者:小柯机器人 发布时间:2022/9/21 14:32:40

吉林大学李昊龙团队开发了基于深共晶溶剂和多金属酸盐的半固态超质子超分子聚合物电解质。相关研究成果发表在2022年9月15日出版的《德国应用化学》。

超分子聚合物(SPs)由于其动态键合特性,在功能性软材料中显示出诱人的优势。然而,大多数SPs只能以溶液状态存在,无法形成散装材料,这限制了其应用。

该文中,研究人员报道了利用多金属氧酸盐(POM)纳米团簇,作为超分子交联剂固化深共晶溶剂(DES)制备半固态块状SP材料。POM提供的丰富质子和强氢键使这些SP材料成为具有足够机械强度的超质子导电电解质,在室温下表现出质子电导率超过1×10-4 S cm-1,断裂强度超过1 MPa。此外,SP电解质的热力学可逆性使其在温和加热时通过简单的熔体渗透策略形成稳定的电极-电解液界面,从而提高超级电容器的性能。

该项工作提出了一个创新的DES/POM杂化系统,作为开发能源和电子应用功能超分子材料的一个有前景的平台。

附:英文原文

Title: Semi-Solid Superprotonic Supramolecular Polymer Electrolytes Based on Deep Eutectic Solvents and Polyoxometalates

Author: Haikun Guo, Leibo Li, Xiaolei Xu, Minghao Zeng, Shengchao Chai, Lixin Wu, Haolong Li

Issue&Volume: 2022-09-15

Abstract: Supramolecular polymers (SPs) exhibit intriguing benefits in functional soft materials due to their dynamic bonding feature. However, most SPs can only exist in the solution state and fail to form bulk materials, which limits their applications. Here, we report the fabrication of semi-solid bulk SP materials by using polyoxometalate (POM) nanoclusters as supramolecular cross-linkers to solidify a deep eutectic solvent (DES). The abundant protons and strong hydrogen bonds afforded by POMs enable these SP materials as superprotonic conductive electrolytes with sufficient mechanical strength, showing a proton conductivity more than 1×10  -4   S cm  -1   and a breaking strength exceeding 1 MPa at room temperature. Moreover, the thermodynamic reversibility of the SP electrolytes allows them to form a stable electrode-electrolyte interface by a facile melt-infiltration strategy upon mild heating, which leads to improved performance in supercapacitors. This work presents an innovative DES/POM hybrid system as a promising platform to develop functional supramolecular materials for energy and electronic applications.

DOI: 10.1002/anie.202210695

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202210695

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx