fig4

From: Recent advances in non-precious metal-based carbon materials for enhanced oxygen reduction and evolution reactions in rechargeable zinc-air batteries

Recent advances in non-precious metal-based carbon materials for enhanced oxygen reduction and evolution reactions in rechargeable zinc-air batteries

Figure 4. (A) Graphical abstract and (B) XPS spectrum of Co₉S₈@SNC^[102]; (C) Illustration of CoNi@GO; (D) Specific capacities plots of CoNi@GO and Pd/C + RuO₂. Long-term galvanostatic discharge charge cycling curves of rechargeable CoNi@GO and Pt/C + RuO₂-based ZABs^[56]; (E) Illustration and (F) Galvanostatic discharge plots, galvanostatic discharge-charge cycling curves of ZABs with CoFe-N-CNTs/CNFs-900 or IrO₂/C + Pt/C as catalyst^[107]; (G) Synthesis of Co/BN-CNT/VN-800 derived from Co₆V₁₂B₁₈-POM^[47]. XPS: X-ray photoelectron spectroscopy; GO: graphene oxide; ZABs: zinc-air batteries; CNTs: carbon nanotubes; CNFs: carbon nanofibers; OER: oxygen evolution reaction; HER: hydrogen evolution reaction; ORR: oxygen reduction reaction.