Lightweight, easily processed, and durable polymeric materials play a crucial role in wearable sensor devices. However, achieving simultaneously high strength and toughness remains a challenge. This study addresses this by utilizing an ion-specific effect to control crystalline domains, enabling the fabrication of a polymeric triboelectric material with tunable mechanical properties. The dense crystal-domain cross-linking enhances energy dissipation, resulting in a material boasting both high tensile strength (58.0 MPa) and toughness (198.8 MJ m^–3), alongside a remarkable 416.7% fracture elongation and 545.0 MPa modulus. Leveraging these properties, the material is successfully integrated into wearable self-powered devices, enabling real-time feedback on human joint movement. This work presents a valuable strategy for overcoming the strength-toughness trade-off in polymeric materials, paving the way for their enhanced applicability and broader use in diverse sensing applications.

中文翻译：

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通过致密晶域交联实现高强度和韧性聚合物摩擦电材料

轻质、易于加工且耐用的聚合物材料在可穿戴传感器设备中发挥着至关重要的作用。然而，同时实现高强度和韧性仍然是一个挑战。这项研究通过利用离子特异性效应来控制晶域来解决这个问题，从而能够制造具有可调机械性能的聚合物摩擦电材料。致密的晶域交联增强了能量耗散，使材料具有高拉伸强度（58.0 MPa）和韧性（198.8 MJ m ^–3），同时具有高达 416.7% 的断裂伸长率和 545.0 MPa 模量。利用这些特性，该材料成功集成到可穿戴自供电设备中，实现人体关节运动的实时反馈。这项工作提出了一种有价值的策略，可以克服聚合物材料的强度与韧性之间的权衡，为增强其在各种传感应用中的适用性和更广泛的使用铺平了道路。