A Novel Aluminium–Air Secondary Battery with Long-Term Stability

Monday, May 12, 2014: 11:00
Bonnet Creek Ballroom III, Lobby Level (Hilton Orlando Bonnet Creek)
R. Mori (Fuji Pigment Co.Ltd)
A metal-air secondary cell with the abundant metal aluminium has been assembled by placing the aluminium ion conductor Al2(WO4)3 both on top of the aluminium anode and underneath the air cathode.  It was possible to enhance the cell capacity and suppress the yield of by-products, by modifying the cell structure. When aqueous NaCl was used as an electrolyte, byproducts such as Al(OH)3 or Al2O3were not detected.  We suggested that this is one of the reasons for obtaining secondary battery with Aluminium -Air cell.  When the condition was optimized, the battery functioned for approximately one month.  We found that the impedance was increased after 1 week of  charge-discharge reaction.  Moreover, by combining the air cathode active material and the solid electrolyte, we were able to achieve a higher cell capacity. This provides a snapshot of future Al-air secondary batteries. 

Figure  A Schematic Figure of Aluminium-Air Secondary Battery