Unravelling the Bi‐Functional Electrocatalytic Properties of {Mo72Fe30} Polyoxometalate Nanostructures for Overall Water Splitting Using Scanning Electrochemical Microscope and Electrochemical Gating Methods
Karthikeyan Krishnamoorthy,
Parthiban Pazhamalai,
Rajavarman Swaminathan
et al.
Abstract:This study reports the use of Keplerate‐type {Mo72Fe30} polyoxometalate (POMs) nanostructures as a bi‐functional‐electrocatalyst for HER and OER in an alkaline medium with a lower overpotential (135 mV for HER and 264 mV for OER), and excellent electrochemical stability. The bi‐functional catalytic properties of {Mo72Fe30} POM are studied using a scanning electrochemical microscope (SECM) via current mapping using substrate generation and tip collection mode. Furthermore, the bipolar nature of the {Mo72Fe30} P… Show more
Recent developments of polyoxometalate (POM)-derived electrocatalysts, their application to the hydrogen evolution reaction (HER), the catalytic HER mechanism, structure–performance correlations, and challenges for the future are reported.
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