Hierarchical Co₃O₄@Ni₃S₂ electrode materials for energy storage and conversion

Abstract

Transition metal oxides are considered to be one of the most potential electrode materials. However, its poor conductivity and insufficient active sites limit its actual applications. Rationally design electrode materials...

One-step electrodeposited Ni3S2/Co9S8/NiS composite on Ni foam as high-performance electrode for supercapacitors

“…There are no noticeable changes in the crystallinity of the material. Similar phenomena have been reported, such as CoMoO 4 NPAs, 59 Ni 3 S 2 @MnMoO 4 , 60 NiCo-SOH-3, 61 Co 3 O 4 @Ni 3 S 2 , 62 and CuCo2O4@Ni–Co-S. 63 The EIS of the Ni 3 S 2 /Co 9 S 8 /NiS-7 electrode after 3000 cycles shows smaller linear slope than that before the cycles (Fig. S16†), indicating that the ion diffusion process gradually decelerates.…”

“…[17][18][19] For example, Co 3 O 4 @Ni 3 S 2 nanostructures achieve a specific capacity of 1071 C g −1 at 1 A g −1 . 20 The theoretical capacitance of Co 9 S 8 reaches 5449 F g −1 . 21 Ni 3 S 2 coupled with Co 9 S 8 loaded on CNT@MXene matrix possesses a specific capacitance of 1827.5 F g −1 at 1 A g −1 .…”

Hierarchical Design of Co(OH)2/Ni3S2 Heterostructure on Nickel Foam for Energy Storage

“…Its function is to provide OH − for a reversible pseudocapacitance reaction with electrode materials, which also reflects the energy storage mechanism of pseudocapacitance materials. According to the rule, the larger the critical area of the CV curve, the higher the Cs [26]. It is evident that the Cs of the Co(OH) 2 /Ni 3 S 2 electrode is significantly greater than the other three, and NF has almost no capacitance characteristics.…”