It is important to develop flexible and conductive materials for various wearable applications, whereas metal foams are seldom used because of their thick cell walls, rigidity, and lack of elasticity. Based on an elastic three-dimensional scaffold (foam) of carbon nanotubes (CNTs), we demonstrate a strategy to develop lightweight metal foams with super high porosity, elasticity, and robustness. It is realized by depositing Pt particles onto the interior surfaces of CNT foam, followed by coating of polydimethylsiloxane for stabilization. The conductivity was improved from several S m^–1 of the raw CNT foam up to more than 100 S m^–1, and the low resistance was maintained perfectly upon compressing up to 70%. The improved elastic stability ensured excellent antifatigue performance beyond 1000 cyclic compressive tests. As compared to conventional metal foam, the CNT/Pt composite foam exhibited a much higher surface area of 42.5 m² g^–1 at a low mass density of just 0.04 g cm^–3.

中文翻译：

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使用碳纳米管支架开发弹性，坚固和高度多孔的金属泡沫

开发用于各种可穿戴应用的柔性和导电材料很重要，而金属泡沫由于其壁厚，刚性和缺乏弹性而很少使用。基于碳纳米管（CNT）的弹性三维支架（泡沫），我们展示了开发具有超高孔隙率，弹性和坚固性的轻质金属泡沫的策略。这是通过将Pt颗粒沉积到CNT泡沫的内表面上，然后涂覆聚二甲基硅氧烷进行稳定来实现的。电导率从原始CNT泡沫的几种S m ^–1改善到超过100 S m ^–1，压缩至70％时，低电阻得以完美维持。改进的弹性稳定性确保了超过1000次循环压缩测试的出色抗疲劳性能。与传统的金属泡沫相比，CNT / Pt复合泡沫在0.04 g cm ^-3的低质量密度下具有更高的表面积（42.5 m ² g ^–1）。