Fig. 5: Anti-hydrogen evolution of a Pb@CF electrode on Zn deposition. | Nature Communications

Fig. 5: Anti-hydrogen evolution of a Pb@CF electrode on Zn deposition.

From: Predeposited lead nucleation sites enable a highly reversible zinc electrode for stable zinc-bromine flow batteries

Fig. 5

a CE of an asymmetric Zn flow battery with 40 mA cm−2/20 mAh cm−2. b Optical photographs of electrolyte bottles after different cycles based on CF/Pb@CF electrodes. c XRD spectra of CF-based deposit. d LSV curves of the CF/Pb@CF electrode in 1 M Na2SO4 at 5 mV s−1. e Tafel curves of the CF/Pb@CF electrode in 2 M ZnBr2 + 3 M KCl electrolytes. f Hydrogen evolution testing. g Schematic describing the Pb@CF electrode in suppressing HER (white ball: H+/H2, blue ball: Zn atom, orange ball: Pb atom).

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