Journal
DALTON TRANSACTIONS
Volume 52, Issue 41, Pages 14896-14903Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3dt02257a
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This study utilized electrodeposition and hydrothermal methods to prepare iron-cobalt bimetallic sulfide nanosheet-assembled nanosphere structures. The prepared material exhibited remarkable performance in supercapacitors and catalytic applications.
Transition metal sulfides are widely regarded as the most promising electrode materials for supercapacitors. Herein, we utilized a straightforward electrodeposition method to prepare an iron-cobalt bimetallic sulfide nanosheet-assembled nanosphere on nickel foam (FeCo2S4/NF). The synergistic effect between bimetals and the unique three-dimensional structure significantly improved its capacitive performance. As a result, it demonstrated a remarkable specific capacitance, brilliant long-term stability and acceptable rate capability. Moreover, FeCo2S4/NF and active carbon (AC) were used to assemble an asymmetric supercapacitor (ASC), and FeCo2S4//AC displays a maximum energy density of 29.4 W h kg-1 at 800 W kg-1. Moreover, when adopted as an electrocatalyst for the hydrogen evolution reaction (HER), FeCo2S4/NF exhibited excellent catalytic properties (eta 10 = 165 mV). Our research provides a valuable insight into the multidisciplinary integration of high-performance energy materials. Fe-Co bimetallic sulfide with unique three-dimensional nanosphere structure was prepared using a facile hydrothermal method, and the energy storage and electrochemical hydrogen evolution performance were comprehensively investigated.
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