Ultrafine nickel–copper carbonate hydroxide hierarchical nanowire networks for high-performance supercapacitor electrodes

Zheng, Xiaoting; Ye, Yunlong; Yang, Qian; Geng, Baoyou; Zhang, Xiaojun

doi:10.1016/j.cej.2016.01.076

Cited by 88 publications

(31 citation statements)

References 56 publications

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“…This cyclic performance is better than some reported hybrid supercapcitor devices like [57]. Moreover, the internal resistance (the real axis intercept) is 1.41 , indicating the internal resistance [58].…”

Section: Resultsmentioning

confidence: 55%

Amorphous CoMoS4 for a valuable energy storage material candidate

Song

Xue

et al. 2016

Chemical Engineering Journal

109

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The amorphous CoMoS 4 is prepared using a simple precipitation method and for the first time used as a supercapacitor material. Surprisingly, it possesses very good electrochemical behavior owing to its amorphous structure and multiple oxidation states. In a three-electrode system, the ratio capacitance of CoMoS 4 sample can reach 661 F g-1 at a current density of 1 A g-1. In the actual application of CoMoS 4 , the CoMoS 4 symmetric device shows the ratio capacitance of 142 F g-1 at 2 A g-1 ; the assembled CoMoS 4 //rGO hybrid supercapacitor also owns a high ratio capacitance of 68 F g-1 at 1 A g-1 with energy and power densities of 27.2 Wh kg-1 at 400 W kg-1 and 17 Wh kg-1 at 2400 W kg-1. Further the hybrid supercapacitor has good capacitance retention (86% after 10000 cycles), low internal and Warburg resistances.

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Section: Resultsmentioning

confidence: 55%

Amorphous CoMoS4 for a valuable energy storage material candidate

Song

Xue

et al. 2016

Chemical Engineering Journal

109

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“…Compared to pristine NiLDH material, it is found that the optimum NiCuLDH(7-10) exhibited superior electrochemical properties including over 50% enhanced specific capacitance and higher capacitance retention rate (75% at 5 A g −1 ). These are attributed to the improved kinetics of Cu(OH) 2 -rGO 0.47 602 F g −1 at 0.2 A g −1 in 1 mol L −1 KOH 53% at 10 A g −1 89% at 5 A g −1 after 5000 cycles [20] Cu(OH) 2 nanorods 0.55 1.747 F cm −2 at 2 mA cm −2 in 5 mol L −1 NaOH 88.3% at 20 mA cm −2 97.3% after 5000 cycles [18] Cu(OH) 2 nanobelt arrays 0.5 217 mF cm −2 at 0.5 mA cm −2 in 1 mol L −1 NaOH 61 % at 2 mA cm −2 90% after 3000 cycles at 2 mA cm −2 [19] Cu(OH) 2 CO 3 nanowires 0.6 971 F g −1 at 1 A g −1 in 6 mol L −1 KOH 69.5% at 10 A g −1 91.5% after 3000 cycles at 5 A g −1 [21] Cl − intercalated α-Ni(OH) 2 0.45 1494 F g −1 at 1 A g −1 in 1 mol L −1 KOH 30% at 8 A g −1 81.9% after 500 cycles at 4 A g −1 [14] β-Ni(OH) 2 0.5 880 F g −1 at 2 A g −1 in 1 mol L −1 NaOH 54% at 20 A g −1 60% after 500 cycles at 5 A g −1 [35] NiCuLDH(7-10) 0.5 1953.5 F g −1 at 0.5 A g −1 in 2 mol L −1 KOH 75% at 5 A g −1 35% after 500 cycles at 5 A g −1 This work charge transport (lower series resistance) and interfacial charge transfer of the material. This work sheds light on developing high performance supercapacitor using earthabundant material.…”

Section: Science Chinamentioning

confidence: 98%

“…1e). The binding energy at 934.2 eV for Cu 2p 3/2 suggests a 2+ valence state of copper ion [21,29].…”

Section: Binary Nicu Layered Double Hydroxide Nanosheets For Enhancedmentioning

confidence: 99%

“…However, the materials normally show an unsatisfied energy storage ability including a low specific capacitance and low conductivity. Zheng et al [21] recently reported NiCu carbonate hydroxide nanowire arrays formed on Cu foam. The material exhibited a promising supercapacitive performance (971 F g −1 at 1 A g −1 ).…”

Section: Binary Nicu Layered Double Hydroxide Nanosheets For Enhancedmentioning

confidence: 99%

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Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

2017

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“…18 An alternative is to synthesize compounds based on mixed metals, adding a foreign atom in the nickel hydroxide structure. 19,20 Zheng et al 21 studied a nickel-copper carbonate hydroxide hierarchical nanowire network electrode and found a specific capacitance of 971 F g -1 , an excellent long-life cycling stability and a retention capacity of 91.5% after 2000 cycles. Hierarchical Co 3 O 4 @Ni-Co-O nanosheet-nanorod arrays was developed with high specific capacitance 25 F cm -2 retaining ca.…”

Section: Introductionmentioning

confidence: 99%

Nickel-Copper Alloys Modified Electrodes: an Electrochemical Study on their Interfacial and Supercapacitive Properties

Wolfart¹,

Brito²,

Marchesi³

et al. 2017

J. Braz. Chem. Soc.

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In this manuscript, we report the electrodeposition of nickel-copper alloys in a two steps methodology. Firstly, the copper electrode is oxidized to generate Cu 2+ ions followed by the reduction of both Ni 2+ and Cu 2+. The electrodes were further cycled in KOH to convert the metallic alloy into the respective electroactive hydroxide. This methodology created an electrode with high roughness and distinct electrochemical behavior. The modified electrodes were also characterized by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Finally, the modified electrodes were studied in their supercapacitive properties by galvanostatic charge and discharge curves; the electrodes showed a good specific capacitance of 58 mF cm -2 . The results indicated a new strategy using a simple methodology to modified Cu-electrodes to develop supercapacitors at low cost. Keywords: nickel-copper hydroxides, supercapacitors, electrodeposition, interfacial properties IntroductionNowadays, the worldwide demand for energy impacts the research in new energy storage and conversion devices where it is intended an enhanced efficiency, low-cost and eco-friendly alternative.1-3 Among them, supercapacitors (SCs) arise as a good alternative due to their ease-preparation, long cycle life and fast and reversible redox reactions. [4][5][6] Supercapacitors, ultracapacitors or electrochemical capacitors are devices that combine the power delivery presented in the capacitors and the energy density presented by the batteries. 7 Based on the charge storage mechanism, supercapacitors can be divided into two categories: electrochemical doublelayer capacitors (EDLCs), where the capacitance arises from the charge accumulated at the electrode/electrolyte interface. Carbonaceous materials such as graphene and carbon nanotubes are typical examples vastly employed in EDLCs. 8,9 The second one are the pseudocapacitors, which the charge storage mechanism is based on both double layer capacitance and fast redox reactions at the electrode/electrolyte interface, increasing the overall density of current produced. Typical pseudocapacitors materials are transition metals oxide/hydroxide (TMOH) and conducting polymers. [10][11][12] Amongst the different TMOH used as supercapacitors electrodes, RuO 2 is by far one of the most investigated material due to its high theoretical specific capacitance, long cycle life and rate capability, electrochemical properties and conductivity. 13 However, its high-cost and scarcity is the main drawback related to RuO 2 based materials in commercial devices. In this way, in order to obtain more attractive materials, TMOH alloys based on low-cost metals have been extensively studied.14 Shinde et al.15 studied the incorporation of Mn in CuO/Cu(OH) 2 by successive ionic layer adsorption and reaction (SILAR) technique. The authors have found an improved specific capacitance of 600 F g -1 for the doped material that was ascribed to a change in the morphology occasioned by the Mn doping effect.Another TMOH of i...

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Ultrafine nickel–copper carbonate hydroxide hierarchical nanowire networks for high-performance supercapacitor electrodes

Cited by 88 publications

References 56 publications

Amorphous CoMoS4 for a valuable energy storage material candidate

Amorphous CoMoS4 for a valuable energy storage material candidate

Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

Nickel-Copper Alloys Modified Electrodes: an Electrochemical Study on their Interfacial and Supercapacitive Properties

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