Self-assembled synthesis of hierarchically porous NiO film and its application for electrochemical capacitors

Zhang, Y.Q.; Xia, Xinhui; Tu, Jiangping; Mai, Y.J.; Shi, San-Qiang; Wang, X.L.; Gu, C.D.

doi:10.1016/j.jpowsour.2011.10.065

Cited by 165 publications

(87 citation statements)

References 35 publications

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“…It is much higher than the result obtained by Song et al [19], only 41.56% capacitance is retained from 2 A·g −1 to 10 A·g −1 . The excellent rate capability is mainly attributed to the following two reasons: first, the disordered porous NiO nanostructures provided a large specific surface area for electrolyte access and shortens the diffusion path in solid phase, resulting in fast redox reactions; second, the disordered porous NiO nanostructures had a good stability and could not easily collapse [20].…”

Section: Electrochemical Testsmentioning

confidence: 99%

The characterizations and electrochemical properties of lignosulfonate templates based mesoporous NiO

Chen¹,

Yao²,

Ping³

et al. 2013

AIP Conference Proceedings

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Abstract. Environmentally recycled liginsulfonate were successfully employed for the facile synthesis of mesoporous NiO materials. The XRD, SEM, TEM and N 2 adsorption-desorption analysis were performed for characterizing the structure and surface properties of resultant NiO. The proximate globular structure of lignin macromolecules played an templating role in the formation of mesoporous framework of NiO. The fabricated NiO nanostructures had high specific surface area (193.8 m 2 /g), large pore volume (0.42 cm 3 /g), and narrow pore size distribution making them ideal candidates for supercapacitor applications. CV, ESI and galvanostatic constant-current charge/discharge tests showed that the fabricated mesoporous NiO had high specific capacitance (342 F·g −1 ) and good circulatory stability. Furthermore, the mesoporous NiO showed a good rate capability, which is due to that the ordered mesopores did not limit the ion motion within the pores. The results suggest that resultant NiO mesostructures are a promising supercapacitor electrode material.

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Section: Electrochemical Testsmentioning

confidence: 99%

The characterizations and electrochemical properties of lignosulfonate templates based mesoporous NiO

Chen¹,

Yao²,

Ping³

et al. 2013

AIP Conference Proceedings

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show abstract

“…However, the high cost of hydrous RuO 2 and IrO 2 hindered their wide application. Consequently, increasing interest has been generated for the use of cheap transition metal oxides, such as nickel oxide (NiO) [8], cobalt oxide (Co 3 O 4 ) [9], vanadium oxide (V 2 O 5 ) [10], manganese oxide (MnO 2 ) [11], and copper oxide (CuO) [12]. Of these, CuO has attracted much research interest due to its unique properties, such as high catalytic activity, easy synthesis route, environmentally friendly nature and variable morphologies at the nanoscale.…”

Section: Introductionmentioning

confidence: 99%

Effect of precipitating agent NaOH on the preparation of copper oxide nanostructures for electrochemical applications

Balasubramaniam¹,

Balakumar²

2016

Nanosystems: Phys. Chem. Math.

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Copper oxide (CuO) nanostructures with different concentrations of sodium hydroxide for electrochemical applications such as supercapacitors have been synthesized using a simple and low-cost precipitation method. X-ray diffraction pattern confirmed the formation of CuO nanostructures without any impurities and further confirmed its highly crystalline, single phase, monoclinic nature. UV-diffuse reflectance spectral (UV-DRS) studies provided the absorption edge of the material and the estimated band gap value for the nanostructures were calculated using Kubelka-Munk (KM) absorbance plot that are determined to be around 4.74 -4.84 eV. Field emission scanning electron microscopy (FESEM) investigations revealed the morphology of the copper oxide nanocrystals and showed the increment of diameter of the CuO nanostructures. The electrochemical behavior of the CuO nanostructures were investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) techniques which showed the stability, reversibility, symmetric and capacitive nature of the nanostructures.

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“…At high scan rates, the diffusion effect, limiting the migration of the electrolytic ions, leads to inaccessible active surface areas for charge storage. In addition, the amorphous alloy exhibits much higher specific capacitance than some transition metal oxides, such as MnO 2 (85.8 F g −1 ) [23], NiO (232 F g −1 ) [24], Fe 2 O 3 (255 F g −1 ) [25], and Co 3 O 4 (358 F g −1 ) [26], which are studied as candidate materials for pseudocapacitor electrodes.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Synthesis of amorphous cobalt-boron alloy/highly ordered mesoporous carbon nanofiber arrays as advanced pseudocapacitor material

Zhang

Tan

Gao

et al. 2014

J Solid State Electrochem

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Mesoporous carbon electrodes have been doped with Co-B nanoparticles via a chemical reduction approach and successfully used for pseudocapacitor application. The morphology is investigated by powder X-ray diffractions (PXRDs), small-angle X-ray scattering (SAXS), inductively coupled plasma (ICP), and transmission electron microscope (TEM). The TEM image displays that the Co-B is highly dispersed along the mesoporous carbon support which are critical for the pseudocapacitor application. Cobalt-boron/ highly ordered mesoporous carbon nanofiber arrays (Co-B/ MCNAs) are investigated by cyclic voltammetry, charge/ discharge test, and electrochemical impedance spectroscopy. The as-synthesized Co-B/MCNAs exhibit remarkable pseudocapacitive activities including high specific capacitance (531 F g −1 at 5 mV s −1 ), good rate capability (315 F g −1 at 50 mV s −1 ), and excellent cycling stability. This value is about 2.7-fold and 1.7-fold higher than MCNAs and Co-B, respectively.

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Self-assembled synthesis of hierarchically porous NiO film and its application for electrochemical capacitors

Cited by 165 publications

References 35 publications

The characterizations and electrochemical properties of lignosulfonate templates based mesoporous NiO

The characterizations and electrochemical properties of lignosulfonate templates based mesoporous NiO

Effect of precipitating agent NaOH on the preparation of copper oxide nanostructures for electrochemical applications

Synthesis of amorphous cobalt-boron alloy/highly ordered mesoporous carbon nanofiber arrays as advanced pseudocapacitor material

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