Novel electrochemical behavior of zinc anodes in zinc/air batteries in the presence of additives

Lee, Chang Woo; Iyer, Sathiyanarayanan Kulathu; Eom, Seung Wook; Kim, Hyun Soo; Yun, Mun Soo

doi:10.1016/j.jpowsour.2005.11.074

Cited by 140 publications

(73 citation statements)

References 7 publications

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“…Their results showed that PEG had better inhibiting properties than GAFAC RA600. [ 132 ] Using anions of organic acids, [ 126 ] and phosphoric acid, tartaric acid, succinic acid, and citric acid [ 133 ] exhibited positive effects on suppressing gas evolution and dendrite formation to some extent.…”

Section: Anode: Zinc Electrodementioning

confidence: 99%

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Lee

Kim

Cao

et al. 2010

Advanced Energy Materials

1,951

1,191

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In the past decade, there have been exciting developments in the fi eld of lithium ion batteries as energy storage devices, resulting in the application of lithium ion batteries in areas ranging from small portable electric devices to large power systems such as hybrid electric vehicles. However, the maximum energy density of current lithium ion batteries having topatactic chemistry is not suffi cient to meet the demands of new markets in such areas as electric vehicles. Therefore, new electrochemical systems with higher energy densities are being sought, and metal-air batteries with conversion chemistry are considered a promising candidate. More recently, promising electrochemical performance has driven much research interest in Li-air and Zn-air batteries. This review provides an overview of the fundamentals and recent progress in the area of Li-air and Zn-air batteries, with the aim of providing a better understanding of the new electrochemical systems.

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Section: Anode: Zinc Electrodementioning

confidence: 99%

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Lee

Kim

Cao

et al. 2010

Advanced Energy Materials

1,951

1,191

View full text Add to dashboard Cite

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“…At the beginning of charging, depending on the type of electrode used, the active surface area for zinc deposition can be small, thus the release of hydrogen bubbles can cause dendrite formation and potential oscillations in the cell [23]. Many attempts have been made in order to improve the appearance and physico-chemical properties of the deposits by introducing various organic and inorganic additives [24][25][26][27]. However, the effect of electrolyte concentration on the current efficiency of the alkaline zinc processes together with temperature and especially electrolyte flow velocity on the resultant morphological properties, to the best of our knowledge have not been reported quantitatively in the literature [28][29][30][31].…”

mentioning

confidence: 99%

Effects of Electrolyte Concentration, Temperature, Flow Velocity and Current Density on Zn Deposit Morphology

Gavrilović-Wohlmuther¹,

Laskos²,

Zelger³

et al. 2015

JEPE

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Abstract:The most critical disadvantages of the Zn-air flow battery system are corrosion of the zinc, which appears as a high self-discharge current density and a short cycle life due to the non-uniform, dendritic, zinc electrodeposition that can lead to internal short-circuit. In our efforts to find a dendrite-free Zn electrodeposition which can be utilized in the Zn-air flow battery, the surface morphology of the electrolytic Zn deposits on a polished polymer carbon composite anode in alkaline, additive-free solutions was studied. Experiments were carried out with 0.1 M, 0.2 M and 0.5 M zincate concentrations in 8 M KOH. The effects of different working conditions such as: elevated temperatures, different current densities and different flow velocities, on current efficiency and dendrite formation were investigated. Specially designed test flow-cell with a central transparent window was employed. The highest Coulombic efficiencies of 80%-93% were found for 0.5 M ZnO in 8 M KOH, at increased temperatures (50-70 °C), current densities of up to 100 mA·cm -2 and linear electrolyte flow velocities higher than 6.7 cm·s -1 .

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“…3. The well dispersion of MnOOH within XC-72 and the larger contact surface area at the MnOOH/XC-72 interface will increase the electron pathways for the ORR since 4-electron-transfer ORR is simultaneously catalyzed by the carbon nanoparticles and MnOOH nanowires [2][3][4]24]. Consequently, the interfacial electron-hopping resistance, R ie , in parallel with an interfacial capacitor at the MnOOH/XC-72 interface, C i (T 2 ), for c-MnOOH-C is much lower than that for p-MnOOH-C.…”

Section: Tablementioning

confidence: 99%