Synthesis of zinc oxide by zinc–air system

Yap, C.K.; Tan, Wee Ching; Alias, Siti Salwa; Mohamad, Ahmad Azmin

doi:10.1016/j.jallcom.2009.05.073

Cited by 31 publications

(14 citation statements)

References 20 publications

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“…Three samples were taken at the inlet, the mid-way and the outlet of the flow field in order to reveal the reaction situation occurring at each electrolyte flow rate. As previously found by many researchers [13,14], the fresh zinc surface presents a smooth surface, whereas needle-like and spongy-like structures have been proven to be a ZnO phase. The ZnO phase on the sample taken from the anode-bottom cell appeared more than that from the anode-top cell at the same electrolyte flow rate, confirming higher zinc utilization by the former orientation.…”

Section: Characterization Of the Spent Zinc Powdersupporting

confidence: 55%

“…The characteristic peaks of the ZnO phase at 2h of 47.53°, 56.60°, 62.86°, and 67.90°were clearly observed in the sample taken from the anode-serpentine cell at the electrolyte flow rate of 4 ml h -1 . These characteristic peaks belong to ZnO(102), ZnO(103), Zn(112), and ZnO(201), respectively [13]. The XRD results confirmed that the maximum zinc utilization had taken place in the anode-serpentine cell at the electrolyte flow rate of 4 ml h -1 .…”

Section: Characterization Of the Spent Zincmentioning

confidence: 62%

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Effects of anode orientation and flow channel design on performance of refuelable zinc-air fuel cells

Jiratchayamaethasakul

Srijaroenpramong

Bunyangyuen

et al. 2014

J Appl Electrochem

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The effects of anode orientation (whether an anode is located above or under a cathode) and flow channel design (parallel or serpentine flow channel) on the performance of refuelable zinc-air fuel cells (RZAFC) continuously fed with KOH electrolyte were investigated. The performance test was conducted at different electrolyte flow rates of 2, 4, and 6 ml h -1 . A polarization test of the cell was conducted at the initial stage of operation, followed by a long-term current discharge test in potentiostatic mode. The spent zinc powders were characterized by a scanning electron microscope and X-ray diffraction. The experimental results revealed that the anode-bottom orientation in the cell performed much better than the anodetop orientation with 11.4 times higher zinc utilization. The performance reduction of the anode-top orientation cell was caused by the cathode overpotential, due to the flooding of the cathode by water crossover from the anode, which was induced by the gravity force. For the flow channel design effects, there was an optimum electrolyte flow rate, to yield a maximum current discharge capacity, of 4 ml h -1 in this study. At this optimum flow rate, the total charge per gram of zinc delivered from the anode serpentine cell was 1.75 times higher than that from the anode-parallel one.

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Section: Characterization Of the Spent Zinc Powdersupporting

confidence: 55%

Section: Characterization Of the Spent Zincmentioning

confidence: 62%

Effects of anode orientation and flow channel design on performance of refuelable zinc-air fuel cells

Jiratchayamaethasakul

Srijaroenpramong

Bunyangyuen

et al. 2014

J Appl Electrochem

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“…In the past few years, ZnO has been synthesized using electrochemical deposition [1], chemical vapor deposition [2], catalysis-driven molecular beam epitaxy [3], thermal evaporation [4], pulsed laser deposition [5], zinc-air [6] and solution-gelation (sol-gel) [7]. Sol-gel is one of the most commonly selected methods for the synthesis of ZnO nanoparticles [8][9][10] because this method produces good homogeneity and optical properties and has easy composition control, low processing temperatures, the ability to coat large areas, and low equipment costs.…”

Section: Introductionmentioning

confidence: 99%

Effect of pH on ZnO nanoparticle properties synthesized by sol–gel centrifugation

Alias

Ismail

Mohamad

2010

Journal of Alloys and Compounds

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313

113

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“…A ZnO photoanode was prepared via the Zn-air method [10,11] and immersed in 0.03 μM bis(tetrabutylammonium)-cis-(dithiocyanato)-N,N′-bis(4-carboxylato 4′carboxylic acid-2,2′-bipyridine) ruthenium(II) dye (N719, Aldrich) solution for 24 h to ensure full absorption. N-719 with concentration of 0.03 μM was diluted into 100 ml of anhydrous ethanol C 2 H 5 OH earlier.…”

Section: Characterization Of Electrolytesmentioning

confidence: 99%

Effect of styrene–acrylonitrile content on 0.5 M NaI/0.05 M I2 liquid electrolyte encapsulation for dye-sensitized solar cells

Tan

Alias

Ismail

et al. 2011

J Solid State Electrochem

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The effect of a gel polymer electrolyte (GPE) as the redox electrolyte used in dye-sensitized solar cells was studied. A GPE solution consisting of 0.5 M sodium iodide, 0.05 M iodine, and ethylene carbonate/propylene carbonate (1:1 w/w) binary solvents was mixed with increasing amounts of styrene-acrylonitrile (SAN). Bulk conductivity measurements show a decreasing trend from 4.54 to 0.83×10 −3 S cm −1 with increasing SAN content. The GPE exhibits Newtonian-like behavior and its viscosity increases from 0.041 to 1.093 Pa s with increasing SAN content. A balance between conductivity (1.3×10 −3 S cm −1 ) and viscosity (1.4 Pa s) is observed at 19 wt.% SAN. Fourier transform infrared spectroscopy detects elevated ring torsion at 706 cm −1 upon the addition of SAN into the liquid electrolyte. This indicates that SAN does not bond with the liquid electrolyte. Finally, the potential stability window of 19 wt.% SAN, which ranges from −1.68 to 1.38 V, proves its applicability in solar cells.

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Synthesis of zinc oxide by zinc–air system

Cited by 31 publications

References 20 publications

Effects of anode orientation and flow channel design on performance of refuelable zinc-air fuel cells

Effects of anode orientation and flow channel design on performance of refuelable zinc-air fuel cells

Effect of pH on ZnO nanoparticle properties synthesized by sol–gel centrifugation

Effect of styrene–acrylonitrile content on 0.5 M NaI/0.05 M I2 liquid electrolyte encapsulation for dye-sensitized solar cells

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