| 초록 |
Nanotechnology, chemical modification, and improved cell design are major strategies employed to improve the performance of metal-air batteries. Here, we successfully operate a new metal-air energy conversion cell, based on germanium anode, and improve its discharge behaviour by a two-pronged approach. First, we fabricated a porous Ge (PGe) anode through controlled electrochemical etching, resulting in higher anode utilization. Second, the full Ge-air cell design was significantly improved to enhance the discharge characteristics of this novel metal-air cell. Using PGe as anode showed higher operating potential than the flat Ge wafer, primarily due to the higher surface area and the apparent effect of the Ge oxides in the anode surface, as examined by XPS analysis. In addition, using an improved alkaline metal-air cell allowed high operating voltage, even when using a flat Ge anode. |
