Figure 3 : Primary Zn-air battery with CoO/N-CNT ORR catalyst as the cathode.

From: Advanced zinc-air batteries based on high-performance hybrid electrocatalysts

Figure 3

(a) A schematic of the primary Zn-air battery. (b) A polarization curve (V~i) and corresponding power density plot of the battery using CoO/N-CNT as the cathode catalyst compared with the battery using commercial Pt/C catalyst. (c) Long-time discharge curve of a primary batteries using CoO/N-CNT cathode catalyst at two different current densities compared with the battery using Pt/C as the cathode catalyst. (d) Typical discharge curves of primary Zn-air batteries with CoO/N-CNT as the cathode catalyst under continuous discharge until complete consumption of Zn at two different current densities. Specific capacity was normalized to the mass of consumed Zn.