Zn/gelled 6M KOH/O2 zinc–air battery

Mohamad, Ahmad Azmin

doi:10.1016/j.jpowsour.2005.10.110

Cited by 133 publications

(70 citation statements)

References 27 publications

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“…An open-circuit voltage of 1.47-1.50 V was measured for meso-PoPD, meso/micro-PoPD and Pt/C (Supplementary Fig. 15), consistent with the previously reported batteries 13,34 . Galvanostatic discharge curves (Fig.…”

Section: Resultssupporting

confidence: 90%

Hierarchically porous carbons with optimized nitrogen doping as highly active electrocatalysts for oxygen reduction

et al. 2014

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Development of efficient, low-cost and stable electrocatalysts as the alternative to platinum for the oxygen reduction reaction is of significance for many important electrochemical devices, such as fuel cells, metal-air batteries and chlor-alkali electrolysers. Here we report a highly active nitrogen-doped, carbon-based, metal-free oxygen reduction reaction electrocatalyst, prepared by a hard-templating synthesis, for which nitrogen-enriched aromatic polymers and colloidal silica are used as precursor and template, respectively, followed by ammonia activation. Our protocol allows for the simultaneous optimization of both porous structures and surface functionalities of nitrogen-doped carbons. Accordingly, the prepared catalysts show the highest oxygen reduction reaction activity (half-wave potential of 0.85 V versus reversible hydrogen electrode with a low loading of 0.1 mg cm À 2 ) in alkaline media among all reported metal-free catalysts. Significantly, when used for constructing the air electrode of zinc-air battery, our metal-free catalyst outperforms the state-of the-art platinum-based catalyst.

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Section: Resultssupporting

confidence: 90%

Hierarchically porous carbons with optimized nitrogen doping as highly active electrocatalysts for oxygen reduction

et al. 2014

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“…Herausforderungen auf dem Gebiet der Materialforschung an ZinkLuftsauerstoff-Sekundärzellen liegen in der Stabilisierung der Struktur der Zinkelektrode [17], die zu Dendritbildung neigt [18], und in der Entwicklung aktiver bifunktionaler Sauerstoffelektroden [19,20].…”

Section: Klassifizierung Und Kenngrößen Von Energiesystemenunclassified

Review on Portable Energy Systems: From Electrochemical Systems to Energy Harvesting

Krewer

2011

Chemie Ingenieur Technik

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“…2,3 First of all, it can be pointed that a modification of the electrode morphology or the electrolyte composition to hold the oxidized Zn in the vicinity of the Zn electrode surface. 2,4,6,7 Other two strategies are a modification of Zn anode with noble metals to control the kinetics of Zn reduction 2 and the addition of surfactants into the electrolyte 2,8 to hold oxidized Zn near a Zn electrode. Miyazaki et al demonstrated the dendrite growth was suppressed by modification of a Zn electrode surface with anion exchange ionomer.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behaviors of Zn Anode in Carbonate-based Aqueous Solutions

et al. 2015

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Electrochemical behaviors of Zn in various concentrations of K 2 CO 3 and KOH containing 5 M K 2 CO 3 (M = mol dm −3 ) aqueous solutions (carbonate-based electrolytes) have been investigated. The electrochemical reactions of Zn in diluted K 2 CO 3 and KOH containing 5 M K 2 CO 3 were suppressed while they were activated in concentrated K 2 CO 3 . In the point of view of the ratio of the cathodic charge q c to the anodic q a and Zn oxidation current, 0.5 M KOH containing 5 M K 2 CO 3 showed the best performance among all examined electrolytes. The dendritic growth of Zn was not observed during redox cycles in the carbonate-based electrolytes.

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Zn/gelled 6M KOH/O2 zinc–air battery

Cited by 133 publications

References 27 publications

Hierarchically porous carbons with optimized nitrogen doping as highly active electrocatalysts for oxygen reduction

Hierarchically porous carbons with optimized nitrogen doping as highly active electrocatalysts for oxygen reduction

Review on Portable Energy Systems: From Electrochemical Systems to Energy Harvesting

Electrochemical Behaviors of Zn Anode in Carbonate-based Aqueous Solutions

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