Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal–Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media
Rongfang Li, Xueyi Chen, Heng Zhang, Yiren Wang, Yang Lv, Haopeng Jiang, Bowen Guo, Xun Feng
Abstract
A highly promising electrocatalyst has been designed and prepared for the hydrogen evolution reaction (HER). This involves incorporating well-dispersed Ir nanoparticles into a cobalt-based metal–organic framework known as Co-BPDC [Co(bpdc)(H 2 O) 2, BPDC: 4,4′-biphenyldicarboxylic acid]. Ir@Co-BPDC demonstrates exceptional HER activity in alkaline media, surpassing both commercial Pt/C and recent noble-metal catalysts. Theoretical results indicate that electron redistribution, induced by interfacial bonds, optimizes the adsorption energy of water and hydrogen, thereby enhancing our understanding of the superior properties of Ir@Co-BPDC for HER.
Topics & Concepts
ChemistryCatalysisIridiumElectrocatalystMetal-organic frameworkNanoparticleCobaltInorganic chemistryAdsorptionMetalRedistribution (election)Chemical engineeringElectrochemistryPhysical chemistryOrganic chemistryElectrodeEngineeringLawPolitical sciencePoliticsElectrocatalysts for Energy ConversionFuel Cells and Related MaterialsElectrochemical Analysis and Applications