Isostructural MOFs with Higher Proton Conductivity for Improved Oxygen Evolution Reaction Performance
Mengxin Zhang, Quanjie Lin, Wangui Wu, Yingxiang Ye, Zizhu Yao, Xiuling Ma, Shengchang Xiang, Zhangjing Zhang
Abstract
Here we synthesized two new isostructural MOFs (FJU-82-Co/FJU-82-Zn) and first observed that tuning of the proton conductivity may provide an effective strategy to improve the electrocatalytic OER perfomances of isostructural crystalline MOF materials. The conductivity value for FJU-82-Co is 7.40 × 10–5 S cm–1, which is 127-fold that for FJU-82-Zn with 5.80 × 10–7 S cm–1 at 60 °C and 98% RH, while the overpotential of FJU-82-Co is 0.57 V at 1 mA cm–2, which is better than that of FJU-82-Zn with 1.17 V.
Topics & Concepts
IsostructuralMaterials scienceConductivityProtonOxygenElectrical resistivity and conductivityChemical engineeringCrystallographyPhysical chemistryCrystal structureOrganic chemistryElectrical engineeringNuclear physicsChemistryPhysicsEngineeringElectrocatalysts for Energy ConversionMachine Learning in Materials ScienceMetal-Organic Frameworks: Synthesis and Applications