The effects of anode additives towards suppressing dendrite growth and hydrogen gas evolution reaction in Zn-air secondary batteries

Aremu, Emmanuel Olugbemisola; Park, Da-Jeong; Ryu, Kwang‐Sun

doi:10.1007/s11581-019-02973-y

Cited by 26 publications

(17 citation statements)

References 32 publications

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“…In other words, the ZnO dendritic growth can be controlled by modifying the working electrode surface with an appropriate amount of inhibitors, which results in superior electrochemical conductivity 31 . ZAFC anodes with minimum dendrite growth on it can sustain for more number of discharge cycles and will possess excellent electrochemical properties 32 . During cathodic polarization of Zn electrode in ZABs, the ZnO ions will be reduced to metallic Zn and get deposited from the alkaline electrolyte to the anode.…”

Section: Resultsmentioning

confidence: 99%

“…31 ZAFC anodes with minimum dendrite growth on it can sustain for more number of discharge cycles and will possess excellent electrochemical properties. 32 During cathodic polarization of Zn electrode in ZABs, the ZnO ions will be reduced to metallic Zn and get deposited from the alkaline electrolyte to the anode. The entire dendrite deposition morphology is dependent on proton and current densities values which may alter the kinetics and power performance of the fuel cell.…”

Section: Surface Analysis With Fesemmentioning

confidence: 99%

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Protection efficiencies of surface‐active inhibitors in zinc‐air batteries

et al. 2020

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Summary Zinc (Zn) particles in alkaline electrolyte of a Zn‐air battery (ZAB) are unstable and prone to corrosion. Zinc oxide (ZnO) generated on the surface of Zn particles affects the electrochemical reactions and reduces the battery efficiency. Thus, inhibiting the self‐corrosion rate of Zn particles has become acritical issue for the development of these batteries. In this study, a research endeavor has been attempted by employing three types and concentrations of organic inhibitors in ZABs to constrain Zn anode corrosion. Significant analyses like polarization curve, constant current discharge, AC impedance, and dendrite growth are executed for in‐depth understanding of the influences of these inhibitors. The experimental results reveal that the inhibiting efficiency of 10 wt% Sodium dodecyl benzene sulfonate surpassed polyethylene glycol 600 (PEG 600) and polysorbate 20 (Tween 20), with a maximum current density of 476.20 mA/cm2 and voltage output of 1.4 V along with discharge capacitance of 10.31 Ah for 2 hours and 8 minutes. Zn anode surface analysis exposes significant dendrite growth and elemental Zn required for passivation suppression. Nevertheless, the results are also justified by Nyquist and Bode plots. Thus, the selected inhibitor will proficiently guarantee the enhanced performance and stability of the ZABs obtained and provide enormous opportunities for its applications.

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Section: Resultsmentioning

confidence: 99%

Section: Surface Analysis With Fesemmentioning

confidence: 99%

Protection efficiencies of surface‐active inhibitors in zinc‐air batteries

et al. 2020

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“…In some investigations, multiple additives were simultaneously utilized. Aremu et al (2019) added K 2 S and PbO into Zn-BiO electrodes. The results of electrochemical tests showed that the coexistence BiO, K 2 S, and PbO would restrain corrosion to the maximum level.…”

Section: Design Of Electrode Compositionmentioning

confidence: 99%

“…and Zn-BiO-PbO electrodes (Aremu et al, 2019). In Ni-Zn batteries, Wang et al (2017) fabricated Zn electrodes with different amount of Al and Sb.…”

Section: Design Of Electrode Compositionmentioning

confidence: 99%

Strategies to Enhance Corrosion Resistance of Zn Electrodes for Next Generation Batteries

et al. 2020

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Zn is an important negative electrode material in our battery industry and nextgeneration Zn based batteries are prospective to compete with lithium-ion batteries on cost and energy density. Corrosion is a severe challenge facing Zn electrodes, which can decrease the capacity, cyclability, and shelf life of batteries. More attention should be paid to Zn electrode corrosion in developing rechargeable and high energy density Zn batteries. In this mini review, the fundamental electrochemical behavior and corrosion of Zn electrodes in aqueous environment are retrospected. Then main strategies in recent studies to mitigate Zn electrode corrosion including electrolyte additives usage, electrode composition design and electrode morphology modification are reviewed.

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“…Hence, this system configuration provides a space between the bipolar plate and membrane which helps prevent membrane damage when charging. Furthermore, it is reported that flowing configurations prevent the dendrites from growing perpendicular to the bipolar plate [13][14][15][16]. Nonetheless, as slurries are heterogeneous systems composed of non-soluble particles, there is a need to use gelling agents to prevent sedimentation and ensure a percolated network.…”

Section: Introductionmentioning

confidence: 99%

Use of Carbon Additives towards Rechargeable Zinc Slurry Air Flow Batteries

et al. 2020

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The performance of redox flow batteries is notably influenced by the electrolyte, especially in slurry-based flow batteries, as it serves as both an ionic conductive electrolyte and a flowing electrode. In this study, carbon additives were introduced to achieve a rechargeable zinc slurry flow battery by minimizing the zinc plating on the bipolar plate that occurs during charging. When no carbon additive was present in the zinc slurry, the discharge current density was 24 mA∙cm−2 at 0.6 V, while the use of carbon additives increased it to up to 38 mA∙cm−2. The maximum power density was also increased from 16 mW∙cm−2 to 23 mW∙cm−2. Moreover, the amount of zinc plated on the bipolar plate during charging decreased with increasing carbon content in the slurry. Rheological investigation revealed that the elastic modulus and yield stress are directly proportional to the carbon content in the slurry, which is beneficial for redox flow battery applications, but comes at the expense of an increase in viscosity (two-fold increase at 100 s−1). These results show how the use of conductive additives can enhance the energy density of slurry-based flow batteries.

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The effects of anode additives towards suppressing dendrite growth and hydrogen gas evolution reaction in Zn-air secondary batteries

Cited by 26 publications

References 32 publications

Protection efficiencies of surface‐active inhibitors in zinc‐air batteries

Protection efficiencies of surface‐active inhibitors in zinc‐air batteries

Strategies to Enhance Corrosion Resistance of Zn Electrodes for Next Generation Batteries

Use of Carbon Additives towards Rechargeable Zinc Slurry Air Flow Batteries

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