Advanced Materials
Advanced Materials
5 years ago

Formation of Septuple-Shelled (Co2/3Mn1/3)(Co5/6Mn1/6)2O4 Hollow Spheres as Electrode Material for Alkaline Rechargeable Battery

Formation of Septuple-Shelled (Co2/3Mn1/3)(Co5/6Mn1/6)2O4 Hollow Spheres as Electrode Material for Alkaline Rechargeable Battery
Bao Wang, Huijun Zhao, Dan Mao, Dan Wang, Wenping Hu, Xiaoxian Zhao, Jian Qi, Yu Zhang, Ranbo Yu, Hongjie Tang
The multishelled (Co2/3Mn1/3)(Co5/6Mn1/6)2O4 hollow microspheres with controllable shell numbers up to septuple shells are synthesized using developed sequential templating method. Exhilaratingly, the septuple-shelled complex metal oxide hollow microsphere is synthesized for the first time by doping Mn into Co3O4, leading to the change of crystalline rate of precursor. Used as electrode materials for alkaline rechargeable battery, it shows a remarkable reversible capacity (236.39 mAh g−1 at a current density of 1 A g−1 by three-electrode system and 106.85 mAh g−1 at 0.5 A g−1 in alkaline battery) and excellent cycling performance due to its unique structure. Septuple-shelled (Co2/3Mn1/3)(Co5/6Mn1/6)2O4 hollow spheres are synthesized for the first time via adjusting the crystallization rate of the precursor. Used as electrode materials for alkaline rechargeable batteries, a remarkable reversible capacity and excellent cycling performance are shown due to the unique multi-shelled hollow structure with larger specific surface area and pore volume.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adma.201700550

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