He, WeikangWeikangHeLi, JingjingJingjingLiZhang, YuanyuanYuanyuanZhangYang, JuanJuanYangZeng, TingTingZengYang, NianjunNianjunYang2025-07-252026-07-162023-12-142025-07-2520252366-9608WOS:001108653700001https://imec-publications.be/handle/20.500.12860/43260A supercapacitor features high power density and long cycling life. However, its energy density is low. To ensemble a supercapacitor with high power- and energy-densities, the applied capacitor electrodes play the key roles. Herein, a high-performance capacitive electrode is designed and grown on a flexible carbon cloth (CC) substrate via a hydrothermal reaction and a subsequent ion exchange sulfuration process. It has a 3D heterostructure, consisting of sulfur-doped NiMn-layered double hydroxide (LDH) nanosheets (NMLS) and sulfur-doped NiCo-LDH nanowires (NCLS). The electrode with sheet-shaped NMLS and wire-shaped NCLS on their top (NMLS@NCLS/CC) increases the available surface area, providing more pseudocapacitive sites. It exhibits a gravimetric capacity of 555.2 C g−1 at a current density of 1 A g−1, the retention rate of 75.1% when the current density reaches up to 20 A g−1, as well as superior cyclic stability. The assembled asymmetric supercapacitor that is composed of a NMLS@NCLS/CC positive electrode and a sulfurized activated carbon negative electrode presents a maximum energy density of 24.2 Wh kg−1 and a maximum power density of 16000 W kg−1. In this study, a facile strategy for designing hierarchical LDH materials is demonstrated as well as their applications in advanced energy storage systems.engJournal article10.1002/smtd.202301167WOS:001108653700001ELECTRODESFOAMMEDLINE:38009500