Design and synthesis of CoMoO4–NiMoO4·xH2O bundles with improved electrochemical properties for supercapacitors

Liu, Mao‐Cheng; Kong, Ling‐Bin; Lü, Chao; Ma, Xue-Jing; Li, Xiaoming; Luo, Yan‐Ling; Kang, Long

doi:10.1039/c2ta00163b

Cited by 342 publications

(195 citation statements)

References 47 publications

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“…The voltage platform with respect to time for the composite con¯rms the typical pseudocapacitive characteristic of the samples. 40 The results agree well with that of the CV curves. Meanwhile, the characterizations of the pure Ni(OH) 2 is studied using CV and GCD analysis as shown in Figs.…”

Section: -3supporting

confidence: 81%

Construction of Hierarchical Ni(OH)₂@CoMoO₄ Nanoflake Composite for High-Performance Supercapacitors

Lin

Zhang

et al. 2016

NANO

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Hierarchical Ni(OH) 2 @CoMoO 4 nano°ake composite on Ni foam was successfully constructed by electrodepositing Ni(OH) 2 onto CoMoO 4 nano°ake and investigated as binder-free electrodes for supercapacitor. The composite shows a large areal capacitance of 5.23 F cm À2 at current density of 8 mA cm À1 , and a capacitance retention of 82.5% after 1000 cycles. The high electrochemical performances can be attributed to the hierarchical nano°akes structure and the synergetic e®ect between Ni(OH) 2 nanosheets and CoMoO 4 nano°akes. This work demonstrates that Ni (OH) 2 @CoMoO 4 nano°ake composite is highly desirable for application as advanced electrochemical electrode material.

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Section: -3supporting

confidence: 81%

Construction of Hierarchical Ni(OH)₂@CoMoO₄ Nanoflake Composite for High-Performance Supercapacitors

Lin

Zhang

et al. 2016

NANO

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“…Especially, heterostructured MnMoO 4 /CoMoO 4 nanowires showed a SC of 187.1 F g -1 and excellent cycling stability [10]. Likewise, CoMoO 4 /NiMoO 4 .xH 2 O bundles delivered a capacitance of 1039 F g -1 [11]. It has also demonstrated the suitability of NiMoO 4 as a new positive electrode material which provided the SC of 1116 F g -1 at 5 mA cm -2 [12].…”

Section: Introductionmentioning

confidence: 75%

“…The reproducibility of redox peaks in the given scan rates are due to the rapid electronic and ionic transport [11,12]. Hence, the as prepared Bi 2 MoO 6 was identified as the optimized electrode based on their better electrochemical performances.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…Recently, metal molybdate (MMoO 4 and M 2 O 3 .nMoO 3 , M = metal) based electrodes have received significant interest in Li-ion batteries and supercapacitors due to their stable crystal structure and redox behaviour of metals (Ni, Co and Mn) in aqueous alkali electrolytes [5][6][7][8][9][10][11][12][13][14][15]. Especially, heterostructured MnMoO 4 /CoMoO 4 nanowires showed a SC of 187.1 F g -1 and excellent cycling stability [10].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, crystal structure and pseudocapacitor electrode properties of γ-Bi2MoO6 nanoplates

Senthilkumar

Selvan

Vasylechko

et al. 2014

Solid State Sciences

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. is analyzed by cyclic voltammetry and galvanostatic charge-discharge techniques. The effect of Na based aqueous electrolytes on capacitance of the Aurvillius type structured Bi 2 MoO 6 is investigated. As prepared γ-Bi 2 MoO 6 nanoplates provide the high specific capacitance (519 Fg -1 ) compared with the high-temperature monoclinic phase γ(H) Bi 2 MoO 6 in 1 M NaOH electrolyte. The obtained high specific capacitance of as prepared Bi 2 MoO 6 could be attributed to the decrease in particle size, increase in active sites, and nano plate-like structure of as prepared γ-Bi 2 MoO 6 .

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“…[1,2] However, its low energy density and cycling stability critically limit the practical applications. [3][4][5] Theoretically, the increase of energy density can be achieved by maximizing the specific capacitance and the operation voltage, which has been the main focus of recent reports on SCs, though great effort is still needed to further improve the energy density of SCs. [6] The improved cycling stability on hybrid electrodes containing electrical double-layer capacitance and pseudocapacitance components with 3D structures has been recently reported.…”

Section: Introductionmentioning

confidence: 99%

CoNi₂S₄‐Graphene‐2D‐MoSe₂ as an Advanced Electrode Material for Supercapacitors

Shen

Pei

et al. 2016

Advanced Energy Materials

158

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2D transition metal dichalcogenides (TMDCs) have attracted attention as active materials for SCs, because of their unique layered structure, higher electrical conductivity (compared with oxides), large surface area, and multivalent oxidation states of transition metal ions, [9] making pavements for diverse applications in energy storage and conversion systems. [10] As previously reported, layered metal diselenide and graphene such as VSe 2 /graphene demonstrated good cycle stability and rate capability. [11] MoSe 2 nanosheets are rarely studied to be applied as active materials for SCs since they easily agglomerated because of high specific area. [12] Theoretically, combining MoSe 2 with conductive matrix, such as graphene, is a feasible way to improve the rate capability and cycle performance of electrodes, owing to its superior electrical conductivity and large surface area. [13] However, despite the obtained promising results, the MoSe 2 nanosheets incline to agglomerate and separate from graphene sheets because of their poor interfacial properties if they are simply mixed, thus greatly limiting the capacitive performance. Therefore, strong and stable interfacial contact without obvious aggregation is the prerequisite to improve the supercapacitive performance of the 2D MoSe 2 /graphene sheets-based composites.On the other hand, ternary nickel cobalt sulfide, CoNi 2 S 4 , has been demonstrated to be a promising electrode material for SCs since it possesses richer redox reactions than the corresponding binary nickel sulfide and cobalt sulfide. In addition, it exhibits a major advantage over CoNi 2 O 4 , mainly due to a higher conductivity. [14][15][16] Compared with CoNi 2 O 4 , [17] the induced strain in CoNi 2 S 4 during charge-discharge cycles is less serious. Nevertheless, it is suggested to be limited by its relatively poor cyclability due to the structural degradation through the redox process. [18,19] To this end, fabrication of multi-component nanostructure electrode materials will be the best solution to the problem of low energy density and cycling stability. In this work, we designed a novel nanocomposite based on ternary components of graphene, MoSe 2 nanosheets, and CoNi 2 S 4 . First, a large amount of high quality graphene and MoSe 2 nanosheets were synthesized based on our previous liquid-exfoliation method. [20] Then, composites of CoNi 2 S 4 -graphene (CoNi 2 S 4 -G), CoNi 2 S 4 -2D MoSe 2 (CoNi 2 S 4 -MoSe 2 ), and CoNi 2 S 4 -graphene-2D MoSe 2 (CoNi 2 S 4 -G-MoSe 2 ) were prepared with an in situ hydrothermal 3D CoNi 2 S 4 -graphene-2D-MoSe 2 (CoNi 2 S 4 -G-MoSe 2 ) nanocomposite is designed and prepared using a facile ultrasonication and hydrothermal method for supercapacitor (SC) applications. Because of the novel nanocomposite structures and resultant maximized synergistic effect among ultrathin MoSe 2 nanosheets, highly conductive graphene and CoNi 2 S 4 nanoparticles, the electrode exhibits rapid electron and ion transport rate and large electroactive surface area, resulting in its am...

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Design and synthesis of CoMoO₄–NiMoO₄·xH₂O bundles with improved electrochemical properties for supercapacitors

Cited by 342 publications

References 47 publications

Construction of Hierarchical Ni(OH)₂@CoMoO₄ Nanoflake Composite for High-Performance Supercapacitors

Construction of Hierarchical Ni(OH)₂@CoMoO₄ Nanoflake Composite for High-Performance Supercapacitors

Synthesis, crystal structure and pseudocapacitor electrode properties of γ-Bi2MoO6 nanoplates

CoNi₂S₄‐Graphene‐2D‐MoSe₂ as an Advanced Electrode Material for Supercapacitors

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Design and synthesis of CoMoO4–NiMoO4·xH2O bundles with improved electrochemical properties for supercapacitors

Cited by 342 publications

References 47 publications

Construction of Hierarchical Ni(OH)2@CoMoO4 Nanoflake Composite for High-Performance Supercapacitors

Construction of Hierarchical Ni(OH)2@CoMoO4 Nanoflake Composite for High-Performance Supercapacitors

Synthesis, crystal structure and pseudocapacitor electrode properties of γ-Bi2MoO6 nanoplates

CoNi2S4‐Graphene‐2D‐MoSe2 as an Advanced Electrode Material for Supercapacitors

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Design and synthesis of CoMoO₄–NiMoO₄·xH₂O bundles with improved electrochemical properties for supercapacitors

Construction of Hierarchical Ni(OH)₂@CoMoO₄ Nanoflake Composite for High-Performance Supercapacitors

Construction of Hierarchical Ni(OH)₂@CoMoO₄ Nanoflake Composite for High-Performance Supercapacitors

CoNi₂S₄‐Graphene‐2D‐MoSe₂ as an Advanced Electrode Material for Supercapacitors