Co3O4–CeO2/C as a Highly Active Electrocatalyst for Oxygen Reduction Reaction in Al–Air Batteries

• DOI: 10.1021/acsami.6b12294
• Publication Date: 2016-11-30T17:39:12Z
• Authors: Kun Liu; Xiaobing Huang; Haiyan Wang; Fuzhi Li; Yougen Tang; Jingsha Li; Minhua Shao
• Keywords: Adsorption of oxygen; Co 3 O 4 -CeO 2 /C; Hydrothermal; 7. Clean energy; 01 natural sciences; Al-air batteries; Synergistic effects; Oxygen reduction reaction; 0104 chemical sciences

Developing high-performance and low-cost electrocatalysts for oxygen reduction reaction (ORR) is still a great challenge Al-air batteries. Herein, CeO2, unique ORR promoter, was incorporated into ketjenblack (KB) supported Co3O4 catalyst. We developed facile two-step hydrothermal approach to fabricate Co3O4-CeO2/KB as catalyst The activity of Co3O4/KB significantly increased by mixing with CeO2 nanoparticles. In addition, the showed better electrocatalytic performance stability than 20 wt % Pt/C in alkaline electrolytes, making it good candidate highly active catalysts. favored four-electron pathway due synergistic interactions between Co3O4. full cell tests, exhibited higher discharge voltage plateau CeO2/KB when used cathode