Graphdiyne Ultrathin Nanosheets for Efficient Water Splitting

Graphdiyne (GDY) is an emerging 2D carbon material that exhibits unusual structures and properties. Therefore, growing heterogeneous materials on the surface of GDY very attractive to achieve efficient energy utilization. Here, a simple method for controllable synthesis ultrathin charge-transfer complexes (CTs) nickel with terephthalic acid nanosheets reported. This catalyst shows record-high oxygen evolution reaction (OER) activity overpotential only 155 mV deliver current density 10 mA cm?2 in alkaline electrolyte. Density functional theory calculations reveals strong p–d coupling effect GDY–CT interface region enhances overall electronic activity, resulting fast reversible redox-switching low electron-transfer barrier. Experimental characterization confirms plays key role modulating morphological accelerate OER rate. These findings are expected contribute design more catalysts realization hydrogen technologies.