Hybrid supercapacitor or supercapattery devices have gained significant attention for their impressive power (Pd) and energy densities (Ed), as well as their exceptional cyclic stability compared to traditional storage devices. In this study, manganese niobium sulfide (MnNbS) is synthesized using a hydrothermal method. To enhance the electrochemical performance of MnNbS, polyaniline (PANI) is blended at varying mass ratios. Initially, the electrochemical properties of MnNbS/PANI are evaluated using a three‐electrode configuration, consisting of working, counter, and reference electrodes. At a current density of 2 A g−1, MnNbS/PANI exhibits an improved specific capacity () of 1366 C g−1. Subsequently, to develop a supercapattery energy storage device, a two‐electrode system is constructed. This setup offers enhanced performance and flexibility, making it an ideal choice for high‐performance supercapacitors. Activated carbon (AC) and MnNbS/PANI are employed as the negative and positive electrodes, respectively, in the two‐electrode system. Notably, the device demonstrates outstanding energy density (Ed) of 26.2 Wh kg−1, power density (Pd) of 2072 W kg−1, and specific capacity of 118 C g−1. Furthermore, durability tests involving 1000 charge–discharge cycles reveal a capacity retention of 79%. This study suggests that MnNbS/PANI (at a weight ratio of 80/20%) holds promise as an electrode material for supercapattery applications.
混合超级电容器或超级电池装置因其令人印象深刻的功率密度(Pd)和能量密度(Ed),以及与传统存储装置相比卓越的循环稳定性而备受关注。本研究采用
水热法合成了
硫化锰铌(MnNbS)。为了提高 MnNbS 的电
化学性能,以不同的质量比掺入了
聚苯胺(
PANI)。最初,我们使用由工作电极、对电极和参比电极组成的三电极配置来评估 MnNbS/
PANI 的电
化学性能。在电流密度为 2 A g-1 时,MnNbS/
PANI 的比容量()提高到 1366 C g-1。随后,为了开发超级电池储能装置,我们构建了一个双电极系统。这种装置具有更高的性能和灵活性,是高性能超级电容器的理想选择。在双电极系统中,
活性炭(AC)和 MnNbS/
PANI 分别用作负极和正极。值得注意的是,该装置的能量密度(Ed)达到 26.2 Wh kg-1,功率密度(Pd)达到 2072 W kg-1,比容量达到 118 C g-1。此外,1000 次充放电循环的耐久性测试显示,容量保持率为 79%。这项研究表明,MnNbS/
PANI(重量比为 80/20%)有望成为超级电池应用的电极材料。