期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 50, 页码 34422-34430出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b12294
关键词
Al-air batteries; Co3O4-CeO2/C; oxygen reduction reaction; synergistic effects; hydrothermal; adsorption of oxygen
资金
- National Nature Science Foundation of China [21571189, 21671200, 51304077]
- Hunan Provincial Natural Science Foundation of China [14JJ3022]
- start-up fund
- Hong Kong Scholar fund
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据