Supramolecular Ionogels Tougher than Metals,Advanced Materials

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Supramolecular Ionogels Tougher than Metals
Advanced Materials ( IF 27.4 ) Pub Date : 2023-04-24 , DOI: 10.1002/adma.202301383
Weizheng Li ₁ , Lingling Li ₁ , Ziyang Liu ₁ , Sijie Zheng ₁ , Qingning Li ₁ , Feng Yan ₁

Affiliation

Common natural and synthetic high-strength materials (such as rubber, plastics, ceramics, and metals) undergo the occurrence of poor deformability. Achieving high strength and large deformation simultaneously is a huge challenge. Herein, high-strength ionogels are developed through the synergy of force-induced crystallization and halometallate ionic liquid created supramolecular ionic networks. The prepared poly(vinyl alcohol)/halometallate ionic liquid ionogels show excellent mechanical properties, including ultimate fracture stress (63.1 ± 2.1 MPa), strain (5248 ± 113%), and unprecedented toughness (1947 ± 52 MJ m⁻³), which is much higher than that of most metals and alloys. Furthermore, the ionogels can achieve reversibility by water to realize green recovery and restoration of damaged mechanical properties.

中文翻译：

超分子离子凝胶比金属更坚韧

常见的天然和合成高强度材料（如橡胶、塑料、陶瓷和金属）都会出现变形能力差的情况。同时实现高强度和大变形是一个巨大的挑战。在此，通过力诱导结晶和卤代金属盐离子液体产生的超分子离子网络的协同作用，开发了高强度离子凝胶。所制备的聚(乙烯醇)/卤代金属盐离子液体离子凝胶表现出优异的机械性能，包括极限断裂应力(63.1±2.1 MPa)、应变(5248±113%)和前所未有的韧性(1947±52 MJ m −3 ⁾，远高于大多数金属和合金。此外，离子凝胶可以通过水实现可逆性，实现绿色恢复和受损机械性能的恢复。

更新日期：2023-04-24

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