Influence of Ag doped CuO nanosheet arrays on electrochemical behaviors for supercapacitors

Huang, Jichun; Wu, Hongbin; Cao, Dianxue; Wang, Guiling

doi:10.1016/j.electacta.2012.04.134

Cited by 85 publications

(33 citation statements)

References 32 publications

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“…The porous structure is obviously different from the literature for those leaves-like or sheet structures of CuO. [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] The surface area of these CuO nanosheets obtained based on the BET method is 10.03 m 2 ·g -1 . These porous CuO nanosheets are efficient for the gas flowing in and out, thus enhancing their gas sensing performance.…”

Section: Structural Characterizationmentioning

confidence: 75%

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Wang

Lin

et al. 2016

ACS Appl. Mater. Interfaces

239

109

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Porous CuO nanosheets were prepared on alumina tubes using a facile hydrothermal method, and their morphology, microstructure and gas sensing properties were investigated. The monoclinic CuO nanosheets had an average thickness of 62.5 nm and were embedded with numerous holes with diameters ranging 5 nm to 17 nm. The porous CuO nanosheets were used to fabricate gas sensors to detect hydrogen sulfide (H 2 S) operated at room temperature. The sensor showed a good response sensitivity of 1.25 with the respond/recovery time of 234 s and 76 s, respectively, when tested with the H 2 S concentrations as low as 10 ppb. It also showed a remarkably high selectivity to the H 2 S, but only minor responses to other gases such as SO 2 , NO, NO 2 , H 2 , CO and C 2 H 5 OH. The working principle of the porous CuO nanosheets based sensor to detect the H 2 S was identified to be the phase transition from semiconducting CuO to a metallic conducting CuS.

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Section: Structural Characterizationmentioning

confidence: 75%

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Wang

Lin

et al. 2016

ACS Appl. Mater. Interfaces

239

109

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“…4 Among them, copper oxides are nontoxic and the abundant availability of copper makes these oxides a cheap material available for many applications. Cupric oxide is a p-type semiconductor with an indirect band gap of 1.3-2.1 eV.…”

Section: Introductionmentioning

confidence: 99%

Structural and optical properties of Ag-doped copper oxide thin films on polyethylene napthalate substrate prepared by low temperature microwave annealing

Das

Alford

2013

Journal of Applied Physics

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Characterization of the physical and electrical properties of Indium tin oxide on polyethylene napthalate J. Appl. Phys. 98, 083705 (2005) Silver doped cupric oxide thin films are prepared on polyethylene naphthalate (flexible polymer) substrates. Thin films Ag-doped CuO are deposited on the substrate by co-sputtering followed by microwave assisted oxidation of the metal films. The low temperature tolerance of the polymer substrates led to the search for innovative low temperature processing techniques. Cupric oxide is a p-type semiconductor with an indirect band gap and is used as selective absorption layer solar cells. X-ray diffraction identifies the CuO phases. Rutherford backscattering spectrometry measurements confirm the stoichiometry of each copper oxide formed. The surface morphology is determined by atomic force microscopy. The microstructural properties such as crystallite size and the microstrain for (À111) and (111) planes are calculated and discussed. Incorporation of Ag led to the lowering of band gap in CuO. Consequently, it is determined that Ag addition has a strong effect on the structural, morphological, surface, and optical properties of CuO grown on flexible substrates by microwave annealing. Tauc's plot is used to determine the optical band gap of CuO and Ag doped CuO films. The values of the indirect and direct band gap for CuO are found to be 2.02 eV and 3.19 eV, respectively. V C 2013 AIP Publishing LLC. [http://dx

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“…Among these, chemical bath deposition is least explored, but is one of the most promising methods because it is simple, inexpensive and potentially scalable. Also, chemical bath deposition on Cu foil allows direct formation onto a conductive substrate, which is ideal for use in energy storage devices such as lithium ion batteries and supercapacitors [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…These include solar cells [3], gas and chemical sensors [4][5][6][7], nanofluidics [8], photocatalysis [9][10], superhydrophobic surfaces [11], antimicrobial and antifungal agents [12][13] and electrochemical energy storage applications [14][15][16][17][18][19]. In particular, CuO superhydrophobic surfaces have been gaining interest because they have superior hydrophobicity but are very economical.…”

Section: Introductionmentioning

confidence: 99%

Formation of Hierarchical CuO Nanostructures on Copper Foil by Chemical Bath Deposition for Applications in Superhydrophobic Surfaces

Felizco

Magdaluyo

2016

MATEC Web of Conferences

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Abstract. Hierarchical CuO nanostructures (urchin-like and grassy island structure) were successfully synthesized by a simple chemical bath deposition method at low temperature of 70°C in a short reaction time of 1h. XRD analysis revealed the presence of pure crystalline monoclinic CuO. Morphological analysis revealed the formation of spherical structures composed of numerous hair-like structures. The pH of the solution was also investigated to have a great effect on the morphology of the CuO nanostructures. At lower pH, the structures tend to form urchin-like structures; while at higher pH, the structures tend to form grass-like islands. A growth mechanism was also proposed in this paper. Lastly, wettability test proved the stable superhydrophobic property of the CuO nanostructured thin film surface.

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Influence of Ag doped CuO nanosheet arrays on electrochemical behaviors for supercapacitors

Cited by 85 publications

References 32 publications

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Structural and optical properties of Ag-doped copper oxide thin films on polyethylene napthalate substrate prepared by low temperature microwave annealing

Formation of Hierarchical CuO Nanostructures on Copper Foil by Chemical Bath Deposition for Applications in Superhydrophobic Surfaces

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Influence of Ag doped CuO nanosheet arrays on electrochemical behaviors for supercapacitors

Cited by 85 publications

References 32 publications

Room-Temperature High-Performance H2S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Room-Temperature High-Performance H2S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Structural and optical properties of Ag-doped copper oxide thin films on polyethylene napthalate substrate prepared by low temperature microwave annealing

Formation of Hierarchical CuO Nanostructures on Copper Foil by Chemical Bath Deposition for Applications in Superhydrophobic Surfaces

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Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method