fig4

Metal-nitrogen-carbon catalysts towards acidic ORR in PEMFC: fundamentals, durability challenges, and improvement strategies

Figure 4. (A) Free energy diagram of 4e- ORR on Pt. This figure is quoted with permission from Kulkarni et al.[87]. (B) M-O2 adsorption energy. This figure is quoted with permission from Zagal et al.[89].

Chemical Synthesis
ISSN 2769-5247 (Online)

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