Hierarchical mushroom-like CoNi2S4 arrays as a novel electrode material for supercapacitors

Mei, Lin; Yang, Ting; Xu, Cheng; Zhang, Ming; Chen, Libao; Li, Qiuhong; Wang, Taihong

doi:10.1016/j.nanoen.2013.10.004

Cited by 275 publications

(143 citation statements)

References 34 publications

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“…Electrochemical capacitors (ECs), also called supercapacitors or ultracapacitors, have attracted much attention in the automotive and consumer electronics industry due to their high power density and long cycle life [1][2][3][4] . Recent efforts have been focused on supercapacitors due to their characteristic high specific power density, fast charge -discharge rates, longer cycle life, lower maintenance cost, safe operation, and environmental friendliness 5,6 .…”

Section: Introductionmentioning

confidence: 99%

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

et al. 2016

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An asymmetric supercapacitor fabricated with CoAl-layered double hydroxide/graphene foam (LDH/GF) composite as the positive electrode and activated carbon derived from expanded graphite (AEG) as negative electrode in aqueous 6 M KOH electrolyte is reported. This CoAl-LDH/GF//AEG cell achieved a specific capacitance of 101.4 F g -1 at a current density of 0.5 A g -1 with a maximum energy density as high as 28 Wh kg -1 and a power density of 1420 W kg -1 . Furthermore, the supercapacitor also exhibited an excellent cycling stability with ∼ 100% capacitance retention after 5000 charging-discharging cycles at a current density of 2 Ag -1 . The results obtained show the potential use of the CoAl-LDH/GF//AEG material as suitable electrode for enhanced energy storage as supercapacitor.

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Section: Introductionmentioning

confidence: 99%

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

et al. 2016

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“…In the low frequency area, the slope of the curve shows the Warburg impedance that is related to the electrolyte diffusion in a porous electrode and proton diffusion in host materials. 22 As shown in the graph, the Ni(OH) 2 -Cu electrode displays a more ideal straight line along the imaginary axis, indicating a lower diffusion resistance occurring in this electrode.…”

Section: Electrochemical Properties Of the Ni(oh) 2 -Cu Hybrid Electrodementioning

confidence: 80%

A one step processed advanced interwoven architecture of Ni(OH)₂ and Cu nanosheets with ultrahigh supercapacitor performance

et al. 2016

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In this work, an interwoven nanoscale structure of Ni(OH) 2 and copper is successfully grown on Ni foam (NF) by using a one-step cheap chemical method. ) and outstanding cycling stability (98.5% capacitance retention after being charged/discharged at a series of current densities for 3500 cycles). Furthermore, the full cell, with Ni(OH) 2 -Cu/NF as the positive electrode and reduced graphene oxide (RGO) as the negative electrode, delivers high areal capacitances and superior energy densities especially at high rates. The involved mechanisms are analyzed and discussed.

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“…More interestingly, 3D hierarchical multidimensional mushroom-like CoNi 2 S 4 nanostructures supported on NF prepared via a one-step hydrothermal route are reported by Mei et al [70] As schematically illustrated in Figure 4e, with Co(NO 3 ) 2 , NF, and TAA as Co 2+ , Ni 2+ , and S 2− sources, respectively, aligned and branched CoNi 2 S 4 arrays are first grown on the surface of NF after reaction for 3 h. With further reaction for 2 h, CoNi 2 S 4 sheets are covered on the surface of aligned CoNi 2 S 4 arrays to form the mushroom-like CoNi 2 S 4 nanostructure. Figure 4f shows the SEM image of the mushroom-like CoNi 2 S 4 .…”

Section: Ni-co-smentioning

confidence: 97%

“…[33,61] In addition, when nickel foam (NF) is used as a nickel source, it is possible to construct nickel-containing MMS nanostructures on nickel foam under hydro/solvothermal conditions. [70,71] The electrodeposition method is an attractive way to grow MMSs on conductive substrates through the cathodic reduction reaction with controlled composition and film thickness. The deposition electrolyte usually contains two metal salts and sulfur source (e.g., TU or TAA).…”

Section: Wwwadvenergymatdementioning

confidence: 99%

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Lou

2017

Advanced Energy Materials

707

319

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Mixed metal sulfides (MMSs) have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), hybrid supercapacitors (HSCs), metal–air batteries (MABs), and water splitting. Compared with monometal sulfides, MMSs exhibit greatly enhanced electrochemical performance, which is largely originated from their higher electronic conductivity and richer redox reactions. In this review, recent progresses in the rational design and synthesis of diverse MMS‐based micro/nanostructures with controlled morphologies, sizes, and compositions for LIBs, SIBs, HSCs, MABs, and water splitting are summarized. In particular, nanostructuring, synthesis of nanocomposites with carbonaceous materials and fabrication of 3D MMS‐based electrodes are demonstrated to be three effective approaches for improving the electrochemical performance of MMS‐based electrode materials. Furthermore, some potential challenges as well as prospects are discussed to further advance the development of MMS‐based electrode materials for next‐generation electrochemical energy storage and conversion systems.

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Hierarchical mushroom-like CoNi2S4 arrays as a novel electrode material for supercapacitors

Cited by 275 publications

References 34 publications

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

A one step processed advanced interwoven architecture of Ni(OH)₂ and Cu nanosheets with ultrahigh supercapacitor performance

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

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Hierarchical mushroom-like CoNi2S4 arrays as a novel electrode material for supercapacitors

Cited by 275 publications

References 34 publications

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

A one step processed advanced interwoven architecture of Ni(OH)2 and Cu nanosheets with ultrahigh supercapacitor performance

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

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A one step processed advanced interwoven architecture of Ni(OH)₂ and Cu nanosheets with ultrahigh supercapacitor performance