The design and functionality of extremely flexible, foldable, and rollable microsupercapacitors (MSCs) with in-plane interdigital electrodes that consist of single-walled carbon nanotube (SWCNT) networks on an ultrathin polyimide substrate are demonstrated through experiments and finite element simulations. The all-solid-state MSCs can be reversibly bent, folded, and rolled purely elastically without degradation of their electrical performance. The simulation results confirm that the deformation in bent, folded, and rolled MSCs is purely elastic. The high power density (1125 W cm^–3) and small time constant (1 ms) of the present MSCs are comparable to those of aluminum electrolytic capacitors. The MSCs operate at scan rates of up to 1000 V s^–1, are characterized by a volumetric capacitance of 18 F cm^–3 and an energy density of 1.6 mWh cm^–3, and exhibit superior electrochemical stability with 96% capacity retention even after 100,000 charge/discharge cycles. The developed MSCs demonstrate high potential for integration in flexible and wearable electronic systems.

通过实验和有限元模拟，论证了在超薄聚酰亚胺基板上具有由单壁碳纳米管（SWCNT）网络组成的面内叉指式电极的极灵活，可折叠和可滚动的微型超级电容器（MSC）的设计和功能。全固态MSC可以纯弹性地可逆地弯曲，折叠和滚动，而不会降低其电性能。仿真结果证实，弯曲，折叠和轧制的MSC的变形是纯弹性的。当前的MSC的高功率密度（1125 W cm ^–3）和较小的时间常数（1 ms）与铝电解电容器相当。MSC的扫描速率高达1000 V s ^–1，其特点是体积电容为18 F cm ^-3，能量密度为1.6 mWh cm ^-3，即使在100,000次充电/放电循环后，仍具有出色的电化学稳定性和96％的容量保持率。发达的MSC具有在柔性和可穿戴电子系统中集成的巨大潜力。