Home > Workflow collections > Publication Charges > Improved Electrochemical Performance of Zinc Anodes by EDTA in Near‐Neutral Zinc−Air Batteries > print

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005     20250129092434.0
024 7 _ |a 10.1002/batt.202100116
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037 _ _ |a FZJ-2021-03715
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100 1 _ |a Montiel Guerrero, Saul Said
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245 _ _ |a Improved Electrochemical Performance of Zinc Anodes by EDTA in Near‐Neutral Zinc−Air Batteries
260 _ _ |a Weinheim
|c 2021
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520 _ _ |a The influence of ethylenediaminetetraacetic acid (EDTA) electrolyte additive on the performance of Zn−air batteries with near-neutral chloride-based electrolytes was examined for primary and secondary batteries. The electrochemical measurements indicated that Zn is not completely active in neat 2 M NaCl, but still could be discharged up to 1 mA cm−2 around −1.0 VAg/AgCl. The characterization of the Zn surfaces revealed the existence of a passive film consisting of Simonkolleite, Zn(OH)2, and/or ZnO. The EDTA additive enhanced the discharge voltages by 200 mV to −1.2 VAg/AgCl indicating an active Zn surface. The effect of EDTA is explained by its chelation abilities with Zn2+ before formation of hydroxide or oxide species. The Zn−air cells with EDTA were operated up to 930 h with specific energies up to 840 Wh kgZn−1. The cells could also be cycled up to 70 cycles while providing enhanced discharge voltages at 1.15 V over 50 cycles. The positive effect of EDTA is dependent on the amount of free EDTA molecules. Nevertheless, the Zn−air cells showed better performance in terms of higher discharge voltage, discharge energies, and lower overpotentials in presence of EDTA.
536 _ _ |a 1223 - Batteries in Application (POF4-122)
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700 1 _ |a Durmus, Yasin Emre
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700 1 _ |a Dzieciol, Krzysztof
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700 1 _ |a Basak, Shibabrata
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700 1 _ |a Tempel, Hermann
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700 1 _ |a Waasen, Stefan
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700 1 _ |a Kungl, Hans
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700 1 _ |a Eichel, Rüdiger-A.
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773 _ _ |a 10.1002/batt.202100116
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856 4 _ |u https://juser.fz-juelich.de/record/897253/files/Invoice_5613136.pdf
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