One step synthesis and capacitive performance of graphene nanosheets/Mn3O4 composite

Zhu, Lingxiang; Zhang, Su; Cui, Yuhua; Song, Huaihe; Chen, Xiaohong

doi:10.1016/j.electacta.2012.10.157

Cited by 80 publications

(31 citation statements)

References 48 publications

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“…[2][3][4][5] Graphitic materials are intensively used as commercial electrode materials because of their flat potential profile and good structural stability during cycling. Graphene has found enormous research interest and number of applications in materials science and physics due 55 to its unique properties such as superior electrical conductivity, excellent mechanical flexibility, larger surface area, and high thermal and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Development of a novel method to grow mono-/few-layered MoS₂films and MoS₂–graphene hybrid films for supercapacitor applications

et al. 2014

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The controlled synthesis of highly crystalline MoS 2 atomic layers remains a challenge for practical applications of this emerging material. We demonstrate a facile method to synthesize crystalline mono-layer / few-layered MoS 2 thin films at liquid-liquid interface which can be suitably transferred on substrates. The films are characterized for its crystal structure by XRD and for the morphology by SEM and TEM. MoS 2 nanosheet-graphene nanosheet (MoS 2 -GNS) hybrid films have been developed by the application of layer-by-layer (LbL) technique. Cyclic voltametry and other electrochemical characterization techniques reveal that the hybrid film electrode shows 10 specific capacitance of 282 Fg -1 at a scan rate of 20 mVs -1 . The as-obtained hybrid electrode is robust and exhibits much improved cycle life (> 1000), retaining over 93 % of its initial capacitance as revealed by galvanostatic charge/discharge studies. The confirmation of better performance as a supercapacitor of the composite was studied by Electrochemical Impedance Spectroscopy. These results indicate that MoS 2 -GNS hybrid is a promising candidate for the electrode material in supercapacitor applications. 15 Chemicals 110All of the reagents used herein were of analytical grade and used as received without any further purification. Molybdenum disulfide (MoS 2 , 99.9%) and graphite rod (99.99 %) were purchased from Sigma-Aldrich Ltd. Conc. Sulfuric acid (H 2 SO 4 , 115 98%), Sodium Sulphate (Na 2 SO 4 ) and oleic acid (99% by GC)

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Section: Introductionmentioning

confidence: 99%

Development of a novel method to grow mono-/few-layered MoS₂films and MoS₂–graphene hybrid films for supercapacitor applications

et al. 2014

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“…Therefore, MnO 2 /graphene was a better ORR catalyst. Other studies have also incorporated manganese oxides into graphene to produce a catalyst: Mn 3 O 4 /graphene by Zhu et al [88] and MnO 2 /graphene by Qian et al [89]. Nevertheless, studies on other metal-oxides graphene hybrids (SnO 2 -, NiO-, WO 3 -, etc.)…”

Section: Metal-oxide-decorated Graphenementioning

confidence: 97%

An overview of the electrochemical performance of modified graphene used as an electrocatalyst and as a catalyst support in fuel cells

Soo

Loh

Mohamad

et al. 2015

Applied Catalysis A: General

102

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“…[1][2][3][4][5][6] Creating carbonbased materials is an effective strategy to solve the problem of the poor electronic conductivity (10 −5 -10 −6 S cm −1 ) of Mn 3 O 4 and maintains high electrolyte penetration/diffusion rates with the aim of improving its capacitive performance. 7,8 However, all of these results are far from meeting the demands of commercial application for their synthetic complexity, relatively worse reversibility or lower stability.…”

Section: Introductionmentioning

confidence: 99%

High nitrogen-doped carbon/Mn₃O₄hybrids synthesized from nitrogen-rich coordination polymer particles as supercapacitor electrodes

Wang

Shi

et al. 2015

Dalton Trans.

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High nitrogen-doped carbon/Mn3O4 composites were synthesized by annealing nitrogen-rich Mn-based coordination polymer particles, and investigated by electron microscopy, X-ray diffraction, and electrochemical experiments. To assess the performance of high nitrogen-doped hybrids as electrode materials in supercapacitors, cyclic voltammetry and galvanostatic charging-discharging measurements are performed. High nitrogen-doped carbon/Mn3O4 composites are charged and discharged faster and have higher capacitance than carbon/Mn3O4 nanostructures with low nitrogen amounts and other reported ones. The capacitance of the high nitrogen-doped carbon/Mn3O4 is 94% retained after 1000 cycles at a constant current. These improvements can be attributed to the nitrogen-doped carbon matrix, which promotes fast Faradaic charging and discharging of the Mn3O4 motifs. The nitrogen-doped carbon/Mn3O4 composites could be a promising candidate material for a high-capacity, low-cost, and environmentally friendly electrode for supercapacitors.

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One step synthesis and capacitive performance of graphene nanosheets/Mn3O4 composite

Cited by 80 publications

References 48 publications

Development of a novel method to grow mono-/few-layered MoS₂films and MoS₂–graphene hybrid films for supercapacitor applications

Development of a novel method to grow mono-/few-layered MoS₂films and MoS₂–graphene hybrid films for supercapacitor applications

An overview of the electrochemical performance of modified graphene used as an electrocatalyst and as a catalyst support in fuel cells

High nitrogen-doped carbon/Mn₃O₄hybrids synthesized from nitrogen-rich coordination polymer particles as supercapacitor electrodes

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One step synthesis and capacitive performance of graphene nanosheets/Mn3O4 composite

Cited by 80 publications

References 48 publications

Development of a novel method to grow mono-/few-layered MoS2films and MoS2–graphene hybrid films for supercapacitor applications

Development of a novel method to grow mono-/few-layered MoS2films and MoS2–graphene hybrid films for supercapacitor applications

An overview of the electrochemical performance of modified graphene used as an electrocatalyst and as a catalyst support in fuel cells

High nitrogen-doped carbon/Mn3O4hybrids synthesized from nitrogen-rich coordination polymer particles as supercapacitor electrodes

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Development of a novel method to grow mono-/few-layered MoS₂films and MoS₂–graphene hybrid films for supercapacitor applications

Development of a novel method to grow mono-/few-layered MoS₂films and MoS₂–graphene hybrid films for supercapacitor applications

High nitrogen-doped carbon/Mn₃O₄hybrids synthesized from nitrogen-rich coordination polymer particles as supercapacitor electrodes