Synthesis and electrochemical performance of nanostructured aqueous NiCo/Fe battery material
ZHU Qiancheng1， QIU Shou2， ZHOU Jianqing1
1.Institute of Nanoscience and Nanotechnology， College of Physical Science and Technology， Central China Normal University， Wuhan 430079， China；2.No.1 Middle School Affiliated to Central China Normal University， Wuhan 430223， China
Abstract：Rechargeable aqueous battery has attracted so much attention as electrochemical energy storage device for its advantages of low-coat， material abundance and satisfactory safety， etc. Here， we constructed a device of NiCo/Fe aqueous battery， in which the NiCo2O4 nanorods were used as positive electrode and Fe3O4 nanorods as negative one. This device showed a very fascinating performance due to its unique designed nanostructure. The capacity reached 207 Wh/kg at a power density of 1.2 kW/kg and it still retained 70.8 Wh/kg even at a high power density of 24 kW/kg. Additionally， the device also possessed a long cycle life because of the array nanostructure and the capacity retention was close to 80% even after 2 000 cycles at a current density of 5 A/g.
2018, Vol. 52 
