Fig. 3: Chemical and electrochemical characterization of the solid-hydroxy silicon/perovskite oxide.
From: Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
a Structural formula of the hydroxy silicon and a schematic diagram showing the deprotonation process on the PBCC surface. b Co 2p core-level XPS spectra of BCS0.05-PBCC and PBCC, with peak fitting results based on multiple cobalt species. Here “sat.” denotes satellite peaks. c O 1 s core-level XPS spectra of BCS0.05-PBCC and PBCC. d Raman spectra of BCS-PBCC (yellow) and PBCC (blue) samples. e OER kinetic currents (in mA cm–2geo) of various BCS-PBCC and PBCC samples in O2-saturated KOH electrolytes with varying pH. f OER specific activities (in mA cm–2oxide) of various BCS-PBCC and PBCC samples at 1.55 V vs. RHE as a function of pH.
