Tailoring the composition of graphene used as electrodes for microsupercapacitors is an effective solution to increase the areal energy density of the devices for greater advancement towards miniaturized electronic applications. Herein, we demonstrate a simple method to prepare the nitrogen/oxygen-doped graphene ink for the scalable 3D printed all-solid-state flexible microsupercapacitors. The devices show promising electrochemical performance with high areal energy density of 2.59 ​μWh cm⁻² and power density of 0.23 ​mW ​cm⁻², good cycling stability, and excellent mechanical flexibility. The method developed here offers a new avenue for the development of high-performance, all-solid-state flexible microsupercapacitors in a straightforward and scalable process.

量身定制用作微型超级电容器电极的石墨烯的组成是一种有效的解决方案，可以增加器件的面能量密度，从而进一步朝着微型电子应用发展。在这里，我们演示了一种简单的方法来制备可扩展的3D打印全固态柔性微型超级电容器的氮/氧掺杂石墨烯油墨。该器件显示出令人鼓舞的电化学性能，具有2.59μWhcm ^-2的高面能量密度和0.23 mW cm ^-2的功率密度，良好的循环稳定性和出色的机械柔韧性。这里开发的方法为通过直接，可扩展的过程开发高性能，全固态柔性微型超级电容器提供了新途径。