Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties
Citations Over TimeTop 1% of 2015 papers
Abstract
While the synthesis of hollow structures of transition metal oxides is well established, it is extremely challenging to fabricate complex hollow structures for mixed transition metal sulfides. Here we report an anion exchange method to synthesize a complex ternary metal sulfides hollow structure, namely nickel cobalt sulfide ball-in-ball hollow spheres. Uniform nickel cobalt glycerate solid spheres are first synthesized as the precursor and subsequently chemically transformed into nickel cobalt sulfide ball-in-ball hollow spheres. When used as electrode materials for electrochemical capacitors, these nickel cobalt sulfide hollow spheres deliver a specific capacitance of 1,036 F g(-1) at a current density of 1.0 A g(-1). An asymmetric supercapacitor based on these ball-in-ball structures shows long-term cycling performance with a high energy density of 42.3 Wh kg(-1) at a power density of 476 W kg(-1), suggesting their potential application in high-performance electrochemical capacitors.
Related Papers
- → ZIF-67 derived nickel cobalt sulfide hollow cages for high-performance supercapacitors(2019)152 cited
- → Controlled synthesis and growth mechanism of zinc cobalt sulfide rods on Ni-foam for high-performance supercapacitors(2018)90 cited
- → Mechanical Alloying Synthesis of Co9S8 Particles as Materials for Supercapacitors(2016)29 cited
- → Rapid synthesis of porous manganese cobalt sulfide grown on Ni foam by microwave method for high performance supercapacitors(2019)11 cited
- INTERACTION BETWEEN Co and Mo ACTIVE COMPONENTS OF SULFUR-TOLERANT CO CONVERSION CATAlYST(2001)