Stretchable supercapacitors based on vertically aligned nanotubes or nanowires have attracted considerable attention because of their improved robustness and electrochemical performance under large and repeated deformations. Here, we demonstrate a robust and high-performance stretchable electrode based on crumpled Au-coated carbon nanotube forest (Au-CNT forest). Experimental measurements show that the resistance of the Au-CNT forest electrode is around one order magnitude lower than that of a pure CNT forest electrode. The biaxially crumpled Au-CNT forest electrode demonstrates nearly identical electrochemical performance at different measured charge/discharge rates under different strain conditions (i.e., from 0% to 800% area strain). The as-prepared symmetric supercapacitor demonstrates a maximum specific capacitance of ∼6 mF cm⁻² at the current density of 40 mA cm⁻² under large strains, exhibiting superior mechanical and electrochemical stability. This research presents a facile process to fabricate highly stretchable supercapacitors based on vertically aligned nanotubes or nanowires for achieving exceptional and robust electrochemical performance.

基于垂直排列的纳米管或纳米线的可拉伸超级电容器由于其在大的和重复的变形下的耐用性和电化学性能而得到了极大的关注。在这里，我们演示了一种基于折皱的Au涂层碳纳米管森林（Au-CNT森林）的耐用且高性能的可拉伸电极。实验测量表明，Au-CNT林电极的电阻比纯CNT林电极的电阻低约一个数量级。在不同应变条件下（即面积应变为0％至800％），在不同的测量充电/放电速率下，双轴压皱的Au-CNT林电极表现出几乎相同的电化学性能。所准备的对称超级电容器具有约6 mF cm的最大比电容^-2在40毫安厘米的电流密度^-2下大的应变，表现出优异的机械和电化学稳定性。这项研究提出了一种基于垂直排列的纳米管或纳米线的，可制造高度可拉伸的超级电容器的简便方法，以实现出色而强大的电化学性能。