Designing　a　low-loading　precious　metal　catalyst　is　of　great　significance　to　achieve　low-cost　and　large-scale　production　of　green　hydrogen　through　overall　water　splitting.　Herein,　a　simple　and　rapid　microwave　method　was　used　to　prepare　efficient　Pt-loaded　NiFe-LDH　electrocatalyst　with　low　loading　for　overall　water　splitting.　In　this　study,　Pt　nanoparticles　loaded　on　NiFe　nanosheets　via　microwave　synthesis　with　low　loading　and　a　diameter　of　only　2　nm　catalysts　exhibit　excellent　electrocatalytic　performance.　The　synthesized　Pt–NiFe-LDH　showed　good　activity　for　HER　to　deliver　10　mA/cm2　at　37　mV.　The　prepared　HER　catalysts　exhibited　remarkable　long-term　stability　at　a　current　density　of　10　mA/cm2　for　more　than　60　h.　In　addition,　the　manufactured　Pt–NiFe-LDH　overall　water-splitting　cell　delivered　a　current　density　of　10　mA/cm2　at　a　low　overpotential　of　1.49　V　and　can　be　maintained　at　10　mA/cm2　for　48　h.　The　precursor　solution　demonstrated　excellent　recyclability,　and　the　electrocatalyst　prepared　with　the　precursor　solution　after　nine　cycles　of　reuse　exhibited　a　low　overpotential　of　92　mV　to　achieve　a　current　density　of　10　mA/cm2.　In　this　study,　a　simple　method　was　employed　to　prepare　ultrafine　Pt　nanoparticles　with　low　loading,　providing　a　new　idea　for　the　rapid　design　of　high-performance　and　low-cost　overall　water　splitting　electrocatalysts.　©　2025　Hydrogen　Energy　Publications　LLC