Mesoporous ZnCo2O4 nanoflakes with bifunctional electrocatalytic activities toward efficiencies of rechargeable lithium-oxygen batteries in aprotic mediaElectronic supplementary information (ESI) available: Additional information on set-up of aprotic Li-O2 batteries testing, nitrogen adsorption-desorption analysis, CV measurement, and 1st capacity profiles of ZnCo2O4 NFs and super P-based Li-O2 batteries. See DOI: 10.1039/c3nr04271e

• Main Authors: Hung, Tai-Feng, Mohamed, Saad Gomaa, Shen, Chin-Chang, Tsai, Yuan-Quei, Chang, Wen-Sheng, Liu, Ru-Shi
• Format: Article
• Language: English
• ISSN: 2040-3364; 2040-3372
• DOI: 10.1039/c3nr04271e

This study reports the successful synthesis of ternary spinel-based ZnCo 2 O 4 nanoflakes (NFs) with mesoporous architectures via the combination of a urea-assisted hydrothermal reaction with calcination in an air atmosphere. Owing to their favorable mesostructures and desirable bifunctional oxygen reduction and evolution activities, the resulting mesoporous ZnCo 2 O 4 NFs yielded stable cyclability at a cut-off capacity of 500 mA h g carbon −1 in the case of aprotic Li-O 2 batteries. 2D mesoporous ZnCo 2 O 4 nanoflakes yielded stable cyclability at a cut-off capacity of 500 mA h g carbon −1 in the case of aprotic Li-O 2 batteries were demonstrated.