Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China.
School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China.
Nat Commun. 2020 Apr 15;11(1):1843. doi: 10.1038/s41467-020-15415-5.
With the world's focus on wearable electronics, the scientific community has anticipated the plasticine-like processability of electrolytes and electrodes. A bioinspired composite of polymer and phase-changing salt with the similar bonding structure to that of natural bones is a suitable electrolyte candidate. Here, we report a water-mediated composite electrolyte by simple thermal mixing of crystallohydrate and polymer. The processable phase-change composites have significantly high mechanical strength and high ionic mobility. The wide operating voltage range and high faradic capacity of the composite both contribute to the maximum energy density. The convenient assembly and high thermal-shock resistance of our device are due to the mechanical interlocking and endothermic phase-change effect. As of now, no other non-liquid electrolytes, including those made from ceramics, polymers, or hydrogels, possess all of these features. Our work provides a universal strategy to fabricate various thermally manageable devices via phase-change electrolytes.
随着世界对可穿戴电子产品的关注，科学界已经预料到了电解质和电极的类似橡皮泥的加工性能。具有类似于天然骨骼的结合结构的聚合物和相变盐的仿生复合材料是合适的电解质候选物。在这里，我们通过结晶水合物和聚合物的简单热混合报告了一种水介导的复合电解质。可加工的相变换热复合材料具有非常高的机械强度和高离子迁移率。复合的宽工作电压范围和高法拉第容量都有助于获得最大的能量密度。我们的器件具有方便的组装和高抗热冲击性，这是由于机械互锁和吸热相变化效应。到目前为止，还没有其他非液态电解质，包括陶瓷、聚合物或水凝胶制成的电解质，具有所有这些特性。我们的工作为通过相变换热电解质来制造各种可热管理的器件提供了一种通用策略。
