In situ shape and phase transformation synthesis of Co3S4 nanosheet arrays for high-performance electrochemical supercapacitors

A high energy density asymmetric supercapacitor from ultrathin manganese molybdate nanosheets

“…With the development of high performance electrode materials for supercapacitors, higher energy density, better performance under high power density and lower cost are being more important for electrode active materials [6,[9][10][11]. Transition metal oxides like MnO 2 , Co 3 O 4 and NiO can present significant specific capacitance because of their multiple oxidation states and wide working voltage window, however, poor electrical conductivity and inferior stability limit their performance [2,[12][13][14][15][16]. Recently, binary metal oxides such as NiMoO 4 , CoMoO 4 , MnMoO 4 , and their composites have acquired much attention because of their better electrical conductivity, feasible oxidation states, good chemical and thermal stability to get superior electrochemical performance [1,13,[17][18][19][20][21].…”

One-Step Hydrothermal Synthesis of 3D Petal-like Co9S8/RGO/Ni3S2 Composite on Nickel Foam for High-Performance Supercapacitors

“…Presently, due to excellent chemical stability, rich valences, [7][8][9] and good electrochemical performance, various transition metal sulfides have also been candidates in this field. 7,8,[10][11][12][13] Among these transition metal sulfides, both Ni 3 S 2 and Co 9 S 8 exhibited good electrochemical performance, and therefore have attracted substantially more attention. 12,13 In order to enhance the capability of these active materials of Ni 3 S 2 and Co 9 S 8 , these transition metal sulfides were controlled synthesized in terms of morphology and structure so as to further improve their performance.…”

Synthesis of nickel and cobalt sulfide nanoparticles using a low cost sonochemical method

“…The phase diagram of the Co-S system is complicated due to the coexistence of strongly reducible cobalt and oxidizable sulfur ion [34]. Cobalt sulfides are reported to have potential applications as catalysts [35, 36], capable of splitting water to produce hydrogen [37], magnetic materials [34, 38], counter electrodes for solar cells [39, 40, 41], anode materials for advanced lithium ion batteries [42, 43, 44] and high-performance supercapacitors [45, 46, 47, 48]. …”