超级电容器
硫化钴
材料科学
电流密度
多孔性
硫化物
镍
钴
硫化镍
金属
硫化铁
金属有机骨架
比表面积
纳米技术
化学工程
电化学
化学
电极
冶金
催化作用
工程类
硫黄
复合材料
有机化学
物理化学
物理
量子力学
吸附
作者
Md. Adil,Abdul Ghani Olabi,Mohammad Ali Abdelkareem,Hussain Alawadhi,Ahmed Bahaa,Khaled Elsaid,Cristina Rodríguez
标识
DOI:10.1016/j.est.2022.106537
摘要
Since 2D MXene offers high conductivity and high redox-active sites making it an excellent candidate for supercapacitors (SCs). On the other hand, metal-organic frameworks (MOF) derived 3D nanospheres like CoS have their own distinctive merits such as high porosity, abundant active sites, large surface area, and superior electrochemical properties. Herein, a novel strategy has been opted to fabricate MXene cobalt sulfide (MXene-CoS). For the first time MOF derived CoS nanostructures were successfully incorporated with MXene flakes and grown on porous nickel foam. Consequently, the electroactivity of the as-prepared electrodes was enhanced by dwindling the ion-electron diffusion pathways. MXene-CoS/AC asymmetric device operated at a wide potential window of 1.6 V which is among the widest for MXene based SCs. The prepared electrodes demonstrated ultra-high specific capacity of 447 mA h g−1 at a current density of 3 mA cm−2. The assembled MXene-CoS/AC ASC solid-state device manifested a high specific capacity of ~190 mA h g−1 and volumetric capacity of 1.2 mA h cm−3 at a current density of 2 mA cm−2. The presented strategy paves a way for a new dimension of MOF-derived metal sulfides incorporated with 2D MXene for high-performance SCs with excellent cyclic stability.
科研通智能强力驱动
Strongly Powered by AbleSci AI