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Application of Non‐Precious Bifunctional Catalysts for Metal‐Air Batteries

Haller, Steffen ; Gridin, Vladislav ; Hofmann, Kathrin ; Stark, Robert W. ; Albert, Barbara ; Kramm, Ulrike I. (2023)
Application of Non‐Precious Bifunctional Catalysts for Metal‐Air Batteries.
In: Energy Technology, 2021, 9 (7)
doi: 10.26083/tuprints-00020138
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Item Type: Article
Type of entry: Secondary publication
Title: Application of Non‐Precious Bifunctional Catalysts for Metal‐Air Batteries
Language: English
Date: 22 December 2023
Place of Publication: Darmstadt
Year of primary publication: 2021
Place of primary publication: Weinheim
Publisher: Wiley-VCH
Journal or Publication Title: Energy Technology
Volume of the journal: 9
Issue Number: 7
Collation: 9 Seiten
DOI: 10.26083/tuprints-00020138
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Zinc‐air batteries have several advantages in comparison with the lithium‐ion technology as they enable the use of earth‐abundant elements, work at low cost, are lightweight, and are also much safer in application. In addition to the chemistry related to the zinc electrode, efficient and stable bifunctional catalysts are required for oxygen reduction reaction (ORR, for discharging) and oxygen evolution reaction (OER, for charging) on the air‐electrode side. Herein, a family of non‐precious metal catalysts is investigated as possible bifunctional composite: metal–nitrogen–carbon (MNC) catalysts for ORR, and metal oxyhydroxides as OER catalysts (Ox). The effect of transition metal and metal loading in these composite MNC + Ox catalysts on ORR and OER activities in half‐cell measurements is discussed. The catalysts were characterized using X‐ray diffraction and Raman spectroscopy to identify their phase composition. For the most active material, a potential gap of 0.79 V between OER and ORR was obtained, respectively. In a zinc‐air cell, this catalyst moreover showed a peak power density of 62 mW cm⁻² and a charge–discharge gap of 0.94 V after 26 h of charge–discharge cycling.

Uncontrolled Keywords: bifunctional catalysts, metal-air batteries, nonprecious metal catalysts, oxygen reduction reaction, polypyrrole
Identification Number: 2001106
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-201384
Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie > Catalysts and Electrocatalysts
11 Department of Materials and Earth Sciences > Material Science > Physics of Surfaces
Date Deposited: 22 Dec 2023 13:30
Last Modified: 07 Mar 2024 12:22
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20138
PPN: 516053396
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