POM-Intercalated NiFe-LDH as Enhanced OER Catalyst for Highly Efficient and Durable Water Electrolysis at Ampere-Scale Current Densities

Efficient and cost-effective electrocatalysts are essential for large-scale hydrogen production via electrochemical water splitting, particularly at industrial-scale current densities. In this study, a heterogeneous electrocatalyst, comprising Keggin-type polyoxometalate (POM), H3PW12O40 (PTA), intercalated into nickel–iron layered double hydroxides (NiFe-LDH-PTA) was synthesized in situ using a one-step hydrothermal method. The intercalation of PTA into the NiFe-LDH layers triggers electronic interactions between the LDH host and PTA guest, modulating the electronic structure of the Ni and Fe active sites and mitigating the dissolution of active species, as confirmed by physicochemical characterizations and…

• NS
  Natural Science Foundation of Shanghai

  Award: 21ZR1445700
• SA
  Science and Technology Commission of Shanghai Municipality

  Award: 23440790400