Demands for flexible electronic equipment such as wearable devices and wrap-round displays have motivated the development of flexible energy storage devices. Although cellulose paper is one of the most promising substrates for flexible devices, its intrinsic limitations, such as poor mechanical durability, hamper its practical use. In this study, we adopted the traditional Korean paper, Hanji, with superior mechanical robustness as a substrate for supercapacitor electrodes. The effective infiltration of activated carbons (ACs) as an electrode material into the dense network of Hanji cellulose fibers was performed by a simultaneous one-pot process of network formation and AC embedment. The fabricated symmetric supercapacitors based on the AC-embedded Hanji electrode exhibited a specific capacitance (C_sp) of 16.0 F/g measured at a scan rate of 10 mV/s with excellent cycle stability, the C_sp retention of 94.5%, over 1000 charge-discharge cycles.

对诸如可穿戴设备和环绕式显示器之类的柔性电子设备的需求促使了柔性储能设备的发展。尽管纤维素纸是柔性设备最有希望的基材之一，但其固有的局限性（例如较差的机械耐久性）阻碍了其实际使用。在这项研究中，我们采用了具有优异机械强度的传统韩文纸Hanji作为超级电容器电极的基材。活性炭（ACs）作为电极材料有效地渗透到Hanji纤维素纤维的致密网络中，是通过同时形成网络和嵌入AC的一锅法完成的。基于嵌入交流电的汉吉电极制作的对称超级电容器表现出比电容（C _sp）在10 mV / s的扫描速率下测得的16.0 F / g具有出色的循环稳定性，在1000个充放电循环中，C _sp保留率为94.5％。