The Library
Perovskite oxide LaCr0.25Fe0.25Co0.5O3-δ as an efficient non-noble cathode for direct ammonia fuel cells
Tools
Tools
Tools
Jeerh, Georgina, Zou, Peimiao, Zhang, Mengfei and Tao, Shanwen (2022) Perovskite oxide LaCr0.25Fe0.25Co0.5O3-δ as an efficient non-noble cathode for direct ammonia fuel cells. Applied Catalysis B: Environmental, 319 . 121919. doi:10.1016/j.apcatb.2022.121919 ISSN 0926-3373.
|
PDF
WRAP-perovskite-oxide-LaCr0.25Fe0.25Co0.5O3-δ-efficient-non-noble-cathode-direct-ammonia-fuel-cells-2022.pdf - Unspecified Version - Requires a PDF viewer. Download (7Mb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.apcatb.2022.121919
Abstract
LaCoO3-δ (LCO) based perovskites including LaCr0.5Co0.5O3-δ (LCCO), LaFe0.5Co0.5O3-δ (LFCO) and LaCr0.25Fe0.25Co0.5O3-δ (LCFCO) were prepared and their oxygen reduction reaction (ORR) activity was studied. The presence of both Cr and Fe played vital roles in enhancing activity, affecting structural and electronic properties respectively. Cr doping was associated with surface oxygen vacancy formation whilst Fe doping enhanced the onset and half-wave potential. Furthermore, the effects of calcinating temperatures were explored and LCFCO fired at 700 oC (LCFCO-700) gave superior activity. Remarkably, when LCFCO-700 was employed in a direct ammonia fuel cell (DAFC), an OCV of 0.72 V and a maximum current density of ∼320 mAcm-2 was achieved when using air as the oxidant. Under similar conditions, DAFCs with LaCr0.25Fe0.25Co0.5O3-δ/C cathode, show comparable performance to the DAFC using Pt/C cathode, indicating that perovskite oxides, such as LaCr0.25Fe0.25Co0.5O3-δ, are promising non-noble cathodes for DAFCs.
| Item Type: | Journal Article | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology |
||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Fuel cells, Ammonia, Perovskite (Mineral) , Cathodes , Disks, Rotating | ||||||||||||
| Journal or Publication Title: | Applied Catalysis B: Environmental | ||||||||||||
| Publisher: | Elsevier BV | ||||||||||||
| ISSN: | 0926-3373 | ||||||||||||
| Official Date: | 15 December 2022 | ||||||||||||
| Dates: |
|
||||||||||||
| Volume: | 319 | ||||||||||||
| Article Number: | 121919 | ||||||||||||
| DOI: | 10.1016/j.apcatb.2022.121919 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
| Date of first compliant deposit: | 19 October 2022 | ||||||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
