Carbon nanotubes (CNTs) are a promising material for use as a flexible electrode in wearable energy devices due to their electrical conductivity, soft mechanical properties, electrochemical activity, and large surface area. However, their electrical resistance is higher than that of metals, and deformations such as stretching can lead to deterioration of electrical performances. To address these issues, here a novel stretchable electrode based on laterally combed CNT networks is presented. The increased percolation between combed CNTs provides a high electrical conductivity even under mechanical deformations. Additional nickel electroplating and serpentine electrode designs increase conductivity and deformability further. The resulting stretchable electrode exhibits an excellent sheet resistance, which is comparable to conventional metal film electrodes. The resistance change is minimal even when stretched by ≈100%. Such high conductivity and deformability in addition to intrinsic electrochemically active property of CNTs enable high performance stretchable energy harvesting (wireless charging coil and triboelectric generator) and storage (lithium ion battery and supercapacitor) devices. Monolithic integration of these devices forms a wearable energy supply system, successfully demonstrating its potential as a novel soft power supply module for wearable electronics.

中文翻译：

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基于横向复合碳纳米管的可伸缩电极，用于可穿戴式能量收集和存储设备

碳纳米管（CNT）由于其导电性，柔软的机械性能，电化学活性和较大的表面积，是一种可穿戴设备中用作柔性电极的有前途的材料。然而，它们的电阻高于金属的电阻，并且诸如拉伸的变形会导致电性能的劣化。为了解决这些问题，这里提出了一种基于横向梳状的CNT网络的新型可拉伸电极。即使在机械变形下，精梳的CNT之间增加的渗滤也可提供高电导率。附加的镍电镀和蛇形电极设计进一步提高了导电性和可变形性。所得的可拉伸电极表现出优异的薄层电阻，与传统的金属膜电极相当。即使拉伸≈100％，电阻变化也很小。CNT的固有的电化学活性特性以及如此高的电导率和可变形性使高性能可伸缩能量收集（无线充电线圈和摩擦发电机）和存储（锂离子电池和超级电容器）设备成为可能。这些设备的单片集成形成了可穿戴能源系统，成功展示了其作为可穿戴电子设备新型软电源模块的潜力。CNT的固有的电化学活性特性以及如此高的电导率和可变形性使高性能可伸缩能量收集（无线充电线圈和摩擦发电机）和存储（锂离子电池和超级电容器）设备成为可能。这些设备的单片集成形成了可穿戴能源系统，成功展示了其作为可穿戴电子设备新型软电源模块的潜力。CNT的固有的电化学活性特性以及如此高的电导率和可变形性使高性能可伸缩能量收集（无线充电线圈和摩擦发电机）和存储（锂离子电池和超级电容器）设备成为可能。这些设备的单片集成形成了可穿戴能源系统，成功展示了其作为可穿戴电子设备新型软电源模块的潜力。