Covalent Organic Frameworks with Interlayer Fixed Pt Atoms for Efficient Electrocatalytic Hydrogen Evolution

TTB-COF with different crystallinities loaded with Pt atoms were synthesized for HER. The Pt@TTB-COF with higher crystallinity exhibited excellent performance with low overpotential of 5 mV at 10 mA cm −2 and high TOF value of 5.43 H 2 S −1 at 50 mV.