A facile one-step route to RGO/Ni3S2 for high-performance supercapacitors

Zhang, Zhuomin; Zhao, Chongjun; Min, Shudi; Qian, Xiuzhen

doi:10.1016/j.electacta.2014.08.038

Cited by 77 publications

(54 citation statements)

References 43 publications

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“…Figure 3a shows 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 which are similar to the morphology of RNS-180, as shown in our previous work. 19 It is clearly observed that the temperature mainly affects the nanoflakes size and depth of three-dimensional pore structure, which is fabricated by the assembly of vertical nanoflakes with a thickness of several nanometers. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 The structure of the CRNS-180 composite was further analyzed by using …”

Section: Rns-180mentioning

confidence: 99%

“…Secondly, the highly open and deep 3D porous structure offers a short route and good accessibility for the solution. 19,34 The vertically connected nanoflakes supply a high specific surface area and many active 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 19 sites, which can promote the pseudocapacitance at high rates. Figure 9 illustrates the Nyquist plots of various composite electrodes recorded (100 kHz to 0.01 Hz).…”

Section: Electrochemical Performances Of Co 9 S 8 /Rgo/ni 3 S 2 Compomentioning

confidence: 99%

“…Furthermore, flexible graphene also serves as a buffer to alleviate possible volume changes during charge/discharge process, especially in cyclability test processes. 19 Up to now, this compositing method has been utilized successfully. [19][20][21] Secondly, ternary transition metal sulfides, e.g., NiCo 2 S 4 , can supply richer redox processes than the single component sulfides.…”

Section: Introductionmentioning

confidence: 99%

“…19 Up to now, this compositing method has been utilized successfully. [19][20][21] Secondly, ternary transition metal sulfides, e.g., NiCo 2 S 4 , can supply richer redox processes than the single component sulfides. [3][4][5] Especially, this method can be used as a bind-free electrode preparation to deposit the active materials of NiCo 2 S 4 on the conductive substrates of carbon fiber paper and nickel foam.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the redox reaction of elemental Ni and GO 26 and further conversion into Ni 3 S 2 /RGO composite 19 during a hydrothermal process, as well as the transformation of Co 2+ into Co 9 S 8 and subsequent deposition on NF through a hydrothermal method at a similar temperature (160 ºC for Co 9 S 8 vs. 180 ºC for Ni 3 S 2 ), 27 a composite of Ni 3 S 2 , Co 9 S 8 , and RGO was synthesized through a one-step hydrothermal process.…”

Section: Introductionmentioning

confidence: 99%

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

Zhang

Wang

Zhao

et al. 2015

ACS Appl. Mater. Interfaces

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218

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Co9S8, Ni3S2, and reduced graphene oxide (RGO) were combined to construct a graphene composite with two mixed metal sulfide components. Co9S8/RGO/Ni3S2 composite films were hydrothermal-assisted synthesized on nickel foam (NF) by using a modified "active metal substrate" route in which nickel foam acted as both a substrate and Ni source for composite films. It is found that the Co9S8/RGO/Ni3S2/NF electrode exhibits superior capacitive performance with high capability (13.53 F cm(-2) at 20 mA cm(-2), i.e., 2611.9 F g(-1) at 3.9 A g(-1)), excellent rate capability, and enhanced electrochemical stability, with 91.7% retention after 1000 continuous charge-discharge cycles even at a high current density of 80 mA cm(-2).

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Section: Rns-180mentioning

confidence: 99%

Section: Electrochemical Performances Of Co 9 S 8 /Rgo/ni 3 S 2 Compomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Zhang

Wang

Zhao

et al. 2015

ACS Appl. Mater. Interfaces

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218

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Programmed Design of a Lithium–Sulfur Battery Cathode by Integrating Functional Units

Zeng

Wang

et al. 2019

Advanced Science

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Sulfur is considered to be one of the most promising cathode materials due to its high theoretical specific capacity and low cost. However, the insulating nature of sulfur and notorious “shuttle effect” of lithium polysulfides (LiPSs) lead to severe loss of active sulfur, poor redox kinetics, and rapid capacity fade. Herein, a hierarchical electrode design is proposed to address these issues synchronously, which integrates multiple building blocks with specialized functions into an ensemble to construct a self‐supported versatile cathode for lithium–sulfur batteries. Nickel foam acts as a robust conductive scaffold. The heteroatom‐doped host carbon with desired lithiophilicity and electronic conductivity serving as a reservoir for loading sulfur can trap LiPSs and promote electron transfer to interfacial adsorbed LiPSs and Ni 3 S 2 sites. The sulfurized carbon nanofiber forest can facilitate the Li‐ion and electron transport and retard the LiPSs diffusion as a barrier layer. Sulfiphilic Ni 3 S 2 acts as both a chemical anchor with strong adsorption affinity to LiPSs and an efficient electrocatalyst for accelerating kinetics for redox conversion reactions. Synergistically, all functional units promote the lithium ion coupled electron transfer for binding and redox conversion of LiPSs, resulting in high reversible capacities, remarkable cycle stability, and excellent rate capability.

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Formation of a Flower‐Like Co−Mo−S on Reduced Graphene Oxide Composite on Nickel Foam with Enhanced Electrochemical Capacitive Properties

et al. 2018

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Transition metal sulfides have attracted considerable attention due to their excellent electrochemical performance for supercapacitors. Herein, we prepared a Co3S4/CoMo2S4 (Co−Mo−S) composite on reduced graphene oxide/Ni foam (RGO/NF) with unique flower‐like morphology through a carefully time‐controlled sulfurization process. It was found that the vulcanization time has a great influence on the morphology and electrochemical properties of the composites. After 3 hours of vulcanization, the as‐prepared Co3S4/CoMo2S4@RGO/NF electrode exhibited a superior specific capacitance of 2530.4 F g−1 at a current density of 1 A g−1, as well as excellent cycling stability with 78.8 % retention of the initial capacitance even after 6,000 cycles at a current density of 10 A g−1. An asymmetric device was assembled employing the Co3S4/CoMo2S4@RGO/NF composite as a positive electrode and activated carbon (AC) as a negative electrode. The device delivered a maximum energy density of 59.0 Wh kg−1 at a power density of 640 W kg−1 and a high cycling performance (90.7 % capacitance retention after 6,000 cycles). These results demonstrate the promising potential of Co−Mo−S@RGO/NF as binder‐free, high‐performance electrode in renewable energy storage systems.

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A facile one-step route to RGO/Ni3S2 for high-performance supercapacitors

Cited by 77 publications

References 43 publications

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

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

Programmed Design of a Lithium–Sulfur Battery Cathode by Integrating Functional Units

Formation of a Flower‐Like Co−Mo−S on Reduced Graphene Oxide Composite on Nickel Foam with Enhanced Electrochemical Capacitive Properties

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A facile one-step route to RGO/Ni3S2 for high-performance supercapacitors

Cited by 77 publications

References 43 publications

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

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

Programmed Design of a Lithium–Sulfur Battery Cathode by Integrating Functional Units

Formation of a Flower‐Like Co−Mo−S on Reduced Graphene Oxide Composite on Nickel Foam with Enhanced Electrochemical Capacitive Properties

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Product

Resources

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

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