Materials that combine metallic electrical conductivity and high toughness are in great demand for advancing flexible electronics. However, such materials are still lacking. Previously reported flexible materials with metallic conductivity (≥1 × 106 S·m‒1) usually compromise on toughness (<3 MJ·m‒3). Here, a binary metalgel is presented that features a binary metal continuum stabilized by a three‐dimensional polymer network. The binary metal continuum consists of hard metal particles encapsulated by soft liquid metal. The continuous conductive pathways within the polymer network enable a metallic electrical conductivity of 2.50 × 106 S·m‒1. Additionally, the combination of hard metal particles, soft liquid metal, and polymer network facilitates stress transfer throughout the material, creating a triple‐mode energy dissipation mechanism that enhances toughness to 14.40 MJ·m‒3. This strategy offers a valuable framework for developing materials that achieve both superior electrical and mechanical properties.

中文翻译：

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一种高导电性和韧性的二元金属凝胶


结合金属导电性和高韧性的材料在先进的柔性电子产品中需求量很大。然而，这些材料仍然缺乏。以前报道的具有金属导电性 （≥1 × 106 S·m\u20121） 的柔性材料通常在韧性 （<3 MJ·m\u20123） 上妥协。在这里，提出了一种二元金属凝胶，其特点是由三维聚合物网络稳定的二元金属连续体。二元金属连续体由软液态金属封装的硬金属颗粒组成。聚合物网络内的连续导电路径可实现 2.50 × 106 S·m\u20121 的金属电导率。此外，硬金属颗粒、软液态金属和聚合物网络的结合促进了整个材料的应力传递，形成了一种三重模式能量耗散机制，将韧性提高到 14.40 MJ·m\u20123。该策略为开发同时具有优异电气和机械性能的材料提供了一个有价值的框架。