Unravelling the Bi-Functional Electrocatalytic Properties of {Mo₇₂Fe₃₀} Polyoxometalate Nanostructures for Overall Water Splitting Using Scanning Electrochemical Microscope and Electrochemical Gating Methods.

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} POM nano-electrocatalysts is studied using the electrochemical gating via simultaneous monitoring of the electrochemical (cell) and electrical ({Mo₇₂Fe₃₀} POM) signals. Next, a prototype water elect

SUBMITTER: Krishnamoorthy K 

PROVIDER: S-EPMC11220659 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature