A nanostructured bifunctional Pd/C gas-diffusion electrode for metal-air batteries
A nanostructured bifunctional Pd/C gas-diffusion electrode for metal-air batteries
Designing a bifunctional air electrode which catalyses both the oxygen reduction and oxygen evolution reactions is an essential part of progress towards fully rechargeable metal-air batteries, such as the iron-air battery which is environmentally friendly, low cost, and does not suffer risk of thermal runaway like lithium-ion batteries. This paper reports the development of a lightweight carbon-based bifunctional air electrode, catalysed by a small (0.5 mg cm-2) loading of 30 wt.% palladium on carbon. The Pd-catalysed air electrode showed good bifunctional activity, with 0.53 V potential difference between oxygen reduction and evolution. The Pd/C air electrode showed improved catalytic activity at high current densities (≥ 50 mA cm-2) and enhanced durability compared with two commercial Pt/C air electrodes produced by Gaskatel GmbH and Johnson Matthey. A stable oxygen evolution potential was maintained over 1,000 charge-discharge cycles.
bifunctional air electrode, palladium catalyst, metal-air battery
508-515
McKerracher, R.D.
f5f9f0e7-a256-4714-b752-e3bb8dab03fc
Alegre, C.
b57abb63-73ed-42e7-8510-08d73917a9c4
Baglio, V.
5d62998b-2e86-4f02-b0be-f544f0ae6f02
Aricò, A.S.
aab629f8-1ee4-4e27-93a3-b6e4222d9b8d
Ponce de León, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Mornaghini, F.
c6bdcdce-547b-45d3-8401-4eda836f1811
Rodlert, M.
038f806d-3703-4bc8-8974-3f542eb4d513
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
20 August 2015
McKerracher, R.D.
f5f9f0e7-a256-4714-b752-e3bb8dab03fc
Alegre, C.
b57abb63-73ed-42e7-8510-08d73917a9c4
Baglio, V.
5d62998b-2e86-4f02-b0be-f544f0ae6f02
Aricò, A.S.
aab629f8-1ee4-4e27-93a3-b6e4222d9b8d
Ponce de León, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Mornaghini, F.
c6bdcdce-547b-45d3-8401-4eda836f1811
Rodlert, M.
038f806d-3703-4bc8-8974-3f542eb4d513
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
McKerracher, R.D., Alegre, C., Baglio, V., Aricò, A.S., Ponce de León, C., Mornaghini, F., Rodlert, M. and Walsh, F.C.
(2015)
A nanostructured bifunctional Pd/C gas-diffusion electrode for metal-air batteries.
Electrochimica Acta, 174, .
(doi:10.1016/j.electacta.2015.06.001).
Abstract
Designing a bifunctional air electrode which catalyses both the oxygen reduction and oxygen evolution reactions is an essential part of progress towards fully rechargeable metal-air batteries, such as the iron-air battery which is environmentally friendly, low cost, and does not suffer risk of thermal runaway like lithium-ion batteries. This paper reports the development of a lightweight carbon-based bifunctional air electrode, catalysed by a small (0.5 mg cm-2) loading of 30 wt.% palladium on carbon. The Pd-catalysed air electrode showed good bifunctional activity, with 0.53 V potential difference between oxygen reduction and evolution. The Pd/C air electrode showed improved catalytic activity at high current densities (≥ 50 mA cm-2) and enhanced durability compared with two commercial Pt/C air electrodes produced by Gaskatel GmbH and Johnson Matthey. A stable oxygen evolution potential was maintained over 1,000 charge-discharge cycles.
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- Accepted Manuscript
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McKerracher_A_nanostructured.pdf
- Accepted Manuscript
More information
Accepted/In Press date: 1 June 2015
e-pub ahead of print date: 3 June 2015
Published date: 20 August 2015
Keywords:
bifunctional air electrode, palladium catalyst, metal-air battery
Organisations:
Engineering Science Unit
Identifiers
Local EPrints ID: 377887
URI: http://eprints.soton.ac.uk/id/eprint/377887
ISSN: 0013-4686
PURE UUID: 8fa12204-29aa-462d-a2e7-78d650ca62a7
Catalogue record
Date deposited: 23 Jun 2015 16:03
Last modified: 15 Mar 2024 03:22
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Contributors
Author:
C. Alegre
Author:
V. Baglio
Author:
A.S. Aricò
Author:
F. Mornaghini
Author:
M. Rodlert
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