Synthesis and capacitive property of hierarchical hollow manganese oxide nanospheres with large specific surface area

Tang, Xiuhua; Liu, Zong–Huai; Zhang, Chengxiao; Yang, Zupei; Wang, Zenglin

doi:10.1016/j.jpowsour.2009.04.037

Cited by 154 publications

(78 citation statements)

References 28 publications

(29 reference statements)

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“…11,12 In this context, layered mesoporous birnessite-type manganese oxide materials are attracting great interest due to their high surface area, low density, and good permeation. [13][14][15][16][17] However, the fabrication of birnessite-type manganese oxide architectures remains a significant challenge due to the fast and uncontrolled growth process.…”

Section: 10mentioning

confidence: 99%

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Hou

Cheng

Hobson³

et al. 2010

Nano Lett.

907

562

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For efficient use of metal oxides, such as MnO 2 and RuO 2 , in pseudocapacitors and other electrochemical applications, the poor conductivity of the metal oxide is a major problem. To tackle the problem, we have designed a ternary nanocomposite film composed of metal oxide (MnO 2 ), carbon nanotube (CNT), and conducting polymer (CP). Each component in the MnO 2 /CNT/CP film provides unique and critical function to achieve optimized electrochemical properties. The electrochemical performance of the film is evaluated by cyclic voltammetry, and constant-current charge/discharge cycling techniques. Specific capacitance (SC) of the ternary composite electrode can reach 427 F/g. Even at high mass loading and high concentration of MnO 2 (60%), the film still showed SC value as high as 200 F/g. The electrode also exhibited excellent charge/discharge rate and good cycling stability, retaining over 99% of its initial charge after 1000 cycles. The results demonstrated that MnO 2 is effectively utilized with assistance of other components (fFWNTs and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) in the electrode. Such ternary composite is very promising for the next generation high performance electrochemical supercapacitors. KEYWORDS MnO 2; fFWNTs, PEDOT-PSS, supercapacitor, effective utilization.A s the limited availability of fossil fuel and the environmental impacts of a society based on such energy sources becoming more obvious, the need for renewable energy sources has attracted attentions of the world. Systems for electrochemical energy storage and conversion include batteries, fuel cells, and supercapacitors. Among them, supercapacitors, also known as electrical double layer capacitor, ultracapacitor, or electrochemical capacitor (EC), have attracted much attention because of their high power density, long cycle life (>100 000 cycles), and rapid charging-discharging rates.1 They can be applied in a large variety of applications, including consumer electronics, memory back-up systems, industrial power, energy management, public transportation, and military devices. More importantly, supercapacitors are critical components in the next generation all-electric cars and cars based on fuel cells that use hydrogen or alcohol as clean and renewable energy media.Various materials have been investigated as the electrodes in ECs, including carboneous materials, 2-4 conducting polymers 5,6 and transition-metal oxides. 7,8 MnO 2 is generally considered to be the most promising transition metal oxides for the next generation of supercapacitors because of its high-energy density, low cost, environmental friendliness, and natural abundance. 9,10The published results thus far established that the electrochemical performance of MnO 2 depended on their morphology, porosity, specific surface area, electrical conductivity and ionic transport within the pores. 11,12 In this context, layered mesoporous birnessite-type manganese oxide materials are attracting great interest due to their high surface area, low density, a...

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Section: 10mentioning

confidence: 99%

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Hou

Cheng

Hobson³

et al. 2010

Nano Lett.

907

562

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“…Furthermore, different synthesis strategies have managed to achieve hollow spheres [5][6][7] , cubes 8 , polyhedrons 2 and bowls 9 , and their manipulation into double-layer shells 10,11 and multi-layer shells 12,13 . Hollownanostructured manganese oxides are attractive due to the high abundance, environmental friendliness and high theoretical specific capacity of manganese oxides 2,[14][15][16][17] . Various studies have reported hollow MnO2 structures such as spheres [14][15][16]18 , tubes 19 , urchin 20 , and paramecium 21 , prepared using methods employing oxidationetching and hard-templates.…”

mentioning

confidence: 99%

“…Hollownanostructured manganese oxides are attractive due to the high abundance, environmental friendliness and high theoretical specific capacity of manganese oxides 2,[14][15][16][17] . Various studies have reported hollow MnO2 structures such as spheres [14][15][16]18 , tubes 19 , urchin 20 , and paramecium 21 , prepared using methods employing oxidationetching and hard-templates. These hollow-structured MnO2 crystals have a specific capacitance range of ~100 to 300 F g -1 at current densities lower than 2 A g -1 .…”

mentioning

confidence: 99%

Cage-like MnO 2 -Mn 2 O 3 hollow spheres with high specific capacitance and high rate capability as supercapacitor material

Wang

et al. 2016

Electrochimica Acta

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“…4a is 691 Fg −1 , which is higher than many reported values. The C s of the powderbased electrodes for MnO 2 is usually in the range of 200-400 Fg −1 , which seriously limits their further commercial applications [2,19,20]. Furthermore, compared with the reported thin film electrodes that the MnO 2 were directly deposited on other conducting substrates, the MnO 2 /NF electrode also exhibits superior C s .…”

Section: Resultsmentioning

confidence: 99%

May 3D nickel foam electrode be the promising choice for supercapacitors?

Wang

Zhang

2011

J Solid State Electrochem

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The manganese oxide (MnO 2 ) nanowires and cobalt hydroxide (Co(OH) 2 ) nanosheets are successfully electrodeposited on nickel foam (NF), respectively (referred to as MnO 2 /NF and Co(OH) 2 /NF electrode hereinafter). Both electrodes show higher specific capacitance (C s ) and more excellent rate performance than that of most reported corresponding materials. In addition, our previous study of Ni(OH) 2 /NF electrodes also exhibited conspicuous results. Combined with the outstanding properties of NF, it is noticeable that the NF electrodes may be a promising choice for supercapacitors.

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Synthesis and capacitive property of hierarchical hollow manganese oxide nanospheres with large specific surface area

Cited by 154 publications

References 28 publications

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Cage-like MnO 2 -Mn 2 O 3 hollow spheres with high specific capacitance and high rate capability as supercapacitor material

May 3D nickel foam electrode be the promising choice for supercapacitors?

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Synthesis and capacitive property of hierarchical hollow manganese oxide nanospheres with large specific surface area

Cited by 154 publications

References 28 publications

Design and Synthesis of Hierarchical MnO2 Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Design and Synthesis of Hierarchical MnO2 Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Cage-like MnO 2 -Mn 2 O 3 hollow spheres with high specific capacitance and high rate capability as supercapacitor material

May 3D nickel foam electrode be the promising choice for supercapacitors?

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Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes

Design and Synthesis of Hierarchical MnO₂ Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes