Hierarchical Ni(OH)₂–MnO₂hollow spheres as an electrode material for high-performance supercapacitors

Abstract

Hollow structures with unique structural features are incredibly attractive for energy storage systems. Here we demonstrate a self-template strategy to prepare hierarchical Ni(OH)2-MnO2 hollow spheres. First, Ni-Mn glycerate solid spheres...

Bimetallic phosphoselenide nanosheets as bifunctional catalysts for 5-hydroxymethylfurfural oxidation and hydrogen evolution

“…2d), which can be ascribed to Mn 2+ . 38,39 With respect to the P 2p XPS spectrum, the peaks at binding energies of 133.5 and 134.4 eV conform to P 2p 3/2 and 2p 1/2 of FePSe 3 (Fig. S3 †).…”

Research progress of electrode materials for non-enzymatic glucose electrochemical sensors

“…Nickel based compounds are widely used in energy storage and electrocatalysis due to their low natural abundance, low cost and excellent electrochemical activity. 47 Their active centers mainly come from the redox pairs of Ni( ii )/Ni( iii ) (Fig. 7).…”

Exploring the electrochemical characteristics of the nucleobase-template assisted NiCo2O4 electrode for supercapacitors

“…12,13 In recent years, transition metal oxides such as zinc oxide (ZnO), vanadium oxide (V 2 O 5 ), cobalt oxide (Co 3 O 4 ), ruthenium oxide (RuO 2 ), and other related materials have been extensively employed as electrode materials for supercapacitors. [14][15][16][17][18][19][20][21][22][23][24][25] Among the widely studied supercapacitor electrode materials, a spinal structure (AB 2 O 4 ) of mixed transition metal oxides, comprising single-phase ternary metal oxides with two various transition metal elements has attracted much attention because of its higher electronic conductivity and electrochemical activity than the single transition metal oxides. [26][27][28] In particular, spinel nickel cobaltite (NiCo 2 O 4 [NCO]) has been broadly investigated as an electrode material in EDLC because of its advantages including large theoretical capacitance value (Z3000 F g À1 ), low cost, environmental-friendliness, etc.…”