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Jiřičný, V.; Siu, S.; Roy, Anurag

doi:10.1023/a:1004092706131

Cited by 17 publications

(11 citation statements)

References 5 publications

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“…The number of ZnO particles per cm 3 of solution N is calculated from the reported diameter of the particles and the density of ZnO: N = (mass ZnO g/liter)(10 −3 liter/cm 3 ) /(ρ ZnO g/cm 3 ) (πd 3 /6 cm 3 /particle), where the density of ZnO is ρ ZnO = 5.6 g/cm 3 . The volume of each particle is V p = πd 3 /6 = 4.45 × 10 −17 cm 3 .…”

Section: Resultsmentioning

confidence: 99%

“…The electrode serves as a current collector once the particles momentarily touch the electrode. The electrochemistry of fluidized slurry of solid state particles is finding new applications in flow batteries and fuel cells [1][2][3][4] and more recently in lithium-ion flow battery, 1 fluidized slurry coal fuel cell, 4 fluidized carbon assisted water electrolysis for hydrogen production 5 and solar illuminated suspension of semiconducting particles. 6 A new kind of lithium-ion flow battery has been recently demonstrated, 1 fueled by semi-solid suspensions of high-energy-density lithium storage compounds that are electrically 'wired' by dilute percolating networks of nano-scale conductor particles.…”

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confidence: 99%

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Nano-Electrochemistry of Fluidized Particles: Solid State Reduction of ZnO Nano-Particles

Jorné

Gillespie

Chen

et al. 2013

J. Electrochem. Soc.

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Electrochemical processes traditionally involve the reduction and oxidation of individual ions. Nano-electrochemistry is proposed and tested here, where nano-particles act as reactants and products and subsequently the electrochemical solid state reaction occurs within the nano-particles. The reduction of insoluble ZnO nano-particles is chosen as an example. The convective transport of the nano-particles to the current collector (rotating disk electrode) determines the rate of the solid state ZnO reduction to Zn. It is shown that once the fluidized particle touches the electrode, electrons are initially transferred from the current collector to the particle until the electrostatic potential is equilibrated, to be followed by solid state reduction within the nano-particles. SEM reveals the existence of partially reduced ZnO nano-particles. Electrochemistry of fluidized particles is starting to find applications in lithium ion batteries and flow redox batteries.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Nano-Electrochemistry of Fluidized Particles: Solid State Reduction of ZnO Nano-Particles

Jorné

Gillespie

Chen

et al. 2013

J. Electrochem. Soc.

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“…In light of new operation system for zinc regeneration, following the original work of Jiricny and coworkers [146], a unique system with a spouted-bed electro-plating regenerator and a pin-array patterned cathode was designed [147]. This system permits to conduct zinc deposition at a high current density, so that the regenerated zinc particles could reach a desired size of 0.5 mm (Fig.11) [147].…”

Section: Latest Progress In Zinc Regenerationmentioning

confidence: 99%

Zinc regeneration in rechargeable zinc-air fuel cells—A review

Zhu

Wilkinson

Zhang

et al. 2016

Journal of Energy Storage

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Zinc-air fuel cells (ZAFCs) present a promising energy source with a competing potential with the lithium-ion battery and even with proton-exchange membrane fuel cells (PEMFCs) for applications in next generation electrified transport and energy storage. The regeneration of zinc is essential for developing the next-generation, i.e., electrochemically rechargeable ZAFCs. This review aims to provide a comprehensive view on both theoretical and industrial platforms already built hitherto, with focus on electrode materials, electrode and electrolyte additives, solution chemistry, zinc deposition reaction mechanisms and kinetics, and electrochemical zinc regeneration systems. The related technological challenges and their possible solutions are described and discussed.A summary of important R&D patents published within the recent 10 years is also presented. * Corresponding authors. Email: xinge.zhang@ nrc-cnrc.gc.ca (X. Zhang); skulinich@tokai-u.jp (S.A. Kulinich)

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“…Initial work was focused on the deposition of zinc from the A second application of alkaline electrolysis of zinc was acid-sulfate electrolytes typical of zinc electrowinning. [6][7][8][9] the deposition of zinc from potassium hydroxide/zincate solutions that resulted from discharge of zinc-air batteries and fuel cells. [9] Research in this area has been supported by the International Lead Zinc Research Organization and counter electrode and current feeder are connected to a direct-current power supply, and passage of current through the cell results in the surfaces of the particles becoming electrochemically active, e.g., copper can be electrowon onto the particles from a solution of copper sulfate.…”

Section: Introduction and Previousmentioning

confidence: 99%

Copper electrowinning using spouted-bed electrodes: Part I. Experiments with oxygen evolution or matte oxidation at the anode

Jiřičný

Roy

2002

Metall Mater Trans B

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A spouted-bed electrode (SBE) is one form of a class of electrodes called "particulate electrodes." The best known such electrode is the fluidized-bed electrode (FBE) that, despite early promise, has found only limited application in the deposition of metals from solution. The novel SBE is a cathode where copper is deposited at a high-current density in a slowly moving bed of copper particles. The article describes an investigation at the University of California, Berkeley into the spouted-bed electrowinning of copper. The effect of operational variables on copper deposition, from electrolytes similar to those encountered in conventional copper electrowinning, onto a spouted-bed cathode have been examined. Anodic reactions used to obtain the results in this part of the article have been the evolution of oxygen on a DSA* anode and the oxidation of a copper matte. A third anodic reaction *DSA is a trademark of Eltech Corp., Chardon, Ohio.is treated in Part II. Despite a high-current density, the electrical-energy consumption was equal to or lower than that in conventional electrowinning

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Untitled

Cited by 17 publications

References 5 publications

Nano-Electrochemistry of Fluidized Particles: Solid State Reduction of ZnO Nano-Particles

Nano-Electrochemistry of Fluidized Particles: Solid State Reduction of ZnO Nano-Particles

Zinc regeneration in rechargeable zinc-air fuel cells—A review

Copper electrowinning using spouted-bed electrodes: Part I. Experiments with oxygen evolution or matte oxidation at the anode

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