Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 50, Pages 34422-34430Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b12294
Keywords
Al-air batteries; Co3O4-CeO2/C; oxygen reduction reaction; synergistic effects; hydrothermal; adsorption of oxygen
Funding
- National Nature Science Foundation of China [21571189, 21671200, 51304077]
- Hunan Provincial Natural Science Foundation of China [14JJ3022]
- start-up fund
- Hong Kong Scholar fund
Ask authors/readers for more resources
Developing high-performance and low-cost electrocatalysts for oxygen reduction reaction (ORR) is still a great challenge for Al air batteries. Herein, CeO2, a unique ORR promoter, was incorporated into ketjenblack (KB) supported Co3O4 catalyst. We developed a facile two-step hydrothermal approach to fabricate Co3O4 CeO2/KB as a high-performance ORR catalyst for Al air batteries. The ORR activity of Co3O4/KB was significantly increased by mixing with CeO2 nanoparticles. In addition, the Co3O4 CeO2/KB showed a better electrocatalytic performance and stability than 20 wt % Pt/C in alkaline electrolytes, making it a good candidate for highly active ORR catalysts. Co3O4 CeO2/KB favored a four-electron pathway in ORR due to the synergistic interactions between CeO2 and Co3O4. In full cell tests, the Co3O4 CeO2/KB exhibited a higher discharge voltage plateau than CeO2/KB and Co3O4/KB when used in cathode in Al air batteries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available