A novel solvothermal synthesis of Mn3O4/graphene composites for supercapacitors

Wu, Yuanzhan; Liu, Suqin; Wang, Haiyan; Wang, Xiwen; Zhang, Xia; Jin, Guanhua

doi:10.1016/j.electacta.2012.11.124

Cited by 199 publications

(107 citation statements)

References 56 publications

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“…The properties of electrode materials are key factors for the performance of SCs, many intense researches have been focused on various electroactive materials in order to improve the performance of SCs [3]. Up to now, the carbon-based materials, including graphene, activated carbon (AC) and carbon nanotubes (CNTs), have been intensively studied for EDLCs in light of their readily accessible mesopores, low cost, eco-friendliness, and stability [7,8]. However, EDLCs are plagued by their relatively low energy density, and their capacitance are typically in the range of 75−175 F g −1 due to the restriction of the specific surface area and the pore-size distribution [2].…”

Section: Introductionmentioning

confidence: 99%

Strongly coupled graphene/Mn 3 O 4 composite with enhanced electrochemical performance for supercapacitor electrode

Jin

Xiao

et al. 2015

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Strongly coupled graphene/Mn 3 O 4 composite with enhanced electrochemical performance for supercapacitor electrode

Jin

Xiao

et al. 2015

Electrochimica Acta

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“…Additionally, the charge-discharge duration increased in the order of bulk Mn 3 O 4 < sample b < sample a, which was determined by the specific capacitance of Mn 3 O 4 . The specific capacitance was calculated using the following equation [29],…”

Section: Electrochemical Performancesmentioning

confidence: 99%

Polyetheramide Templated Synthesis of Monodisperse Mn3O4 Nanoparticles with Controlled Size and Study of the Electrochemical Properties

et al. 2014

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Monodisperse Mn3O4 nanoparticles were prepared solvothermally starting from manganese acetate by using polyether amide block copolymers (Pebax2533) as a template in isopropanol. The diameter of the nanoparticles in the range of 8.7 nm∼31.5 nm was decreased with increase of Pebax2533 concentration. The electrochemical properties and application in supercapacitor of Mn3O4 nanoparticles were further studied. The results showed that smaller nanoparticles had a larger capacitance. The higher capacitance of 217.5 F/g at a current density of 0.5 A/g was obtained on 8.7 nm Mn3O4 nanoparticles. The specific capacitance retention of 82% was maintained after 500 times of continuous charge-discharge cycles.

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“…Then, MnO 2 nanomaterials were loaded on the rGO sponge to form the MnO 2 /rGO sponge-based supercapacitors ( Figure 5.6d,g). Apart from MnO 2 , Mn 3 O 4 nanomaterials anchored on the graphene sheets were also widely investigated for supercapacitors [80,81]. Cobalt and nickel oxides were also investigated to be incorporated with graphene for supercapacitors.…”

Section: Graphene/metal Oxide Compositesmentioning

confidence: 99%

High‐Performance Supercapacitors Based on Novel Graphene Composites

Xiao¹,

Xu²,

Yang³

2015

Graphene‐based Energy Devices

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The global energy consumption is accelerating at an alarming rate and will soon exhaust all fossil fuel resources. Sustainable, renewable, and environmentally friendly technologies for energy generation, storage, and conversion are high on the agenda of public and private enterprises. Electrochemical capacitors, also called supercapacitors, are one of the energy storage modalities. In light of their excellent power density, fast charging rate, and extended cycle life, supercapacitors have immense application potential in portable electronics and electric vehicles [1], and thus have been attracting growing research interest in recent years. In general, two major types of supercapacitors exist depending on the underlying energy storage mechanism: electric double-layer capacitors (EDLCs) and pseudocapacitors [2][3][4]. EDLCs store energy by the electrostatic accumulation of charges in the electric double layer near the electrode/electrolyte interface, as shown in Figure 5.1. The electrode materials for EDLCs are generally carbonaceous materials, such as activated carbon (AC), mesoporous carbon, carbon nanotubes, and graphene. The electric double-layer (EDL) capacitance is closely dependent on the surface area, which can be calculated using the following equation [5]:where r and 0 are the relative dielectric constant and the dielectric constant of vacuum, respectively, A is the specific surface area of the electrode accessible to the electrolyte ions, and d is the effective thickness of the EDL. Because of the nature of energy storage mechanism of EDLCs, charges are not transferred between the electrode materials and the electrolyte. Thus, the EDLCs have good cycling stability, but do not exhibit a high enough energy density to meet the ever-growing need for peak-power assistance in electric vehicles. Pseudocapacitors use an energy storage mechanism similar to that of electrochemical batteries, but the fast and the reversible faradaic reactions for energy storage primarily occur at the interface or near the interface of Graphene-based Energy Devices, First Edition. Edited by A. Rashid bin Mohd Yusoff.

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A novel solvothermal synthesis of Mn3O4/graphene composites for supercapacitors

Cited by 199 publications

References 56 publications

Strongly coupled graphene/Mn 3 O 4 composite with enhanced electrochemical performance for supercapacitor electrode

Strongly coupled graphene/Mn 3 O 4 composite with enhanced electrochemical performance for supercapacitor electrode

Polyetheramide Templated Synthesis of Monodisperse Mn3O4 Nanoparticles with Controlled Size and Study of the Electrochemical Properties

High‐Performance Supercapacitors Based on Novel Graphene Composites

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