Dynamic traction of lattice-confined platinum atoms into mesoporous carbon matrix for hydrogen evolution reaction

• DOI: 10.1126/sciadv.aao6657
• Publication Date: 2018-01-20T01:35:12Z
• Authors: Huabin Zhang; Pengfei An; Wei Zhou; Bu Yuan Guan; Peng Zhang; Juncai Dong; Xiong Wen (David)...
• Keywords: Lattice (music)

Constructing atomically dispersed platinum (Pt) electrocatalysts is essential to build high-performance and cost-effective electrochemical water-splitting systems. We present a novel strategy realize the traction stabilization of isolated Pt atoms in nitrogen-containing porous carbon matrix (Pt@PCM). In comparison with commercial Pt/C catalyst (20 weight %), as-prepared Pt@PCM exhibits significantly boosted mass activity (up 25 times) for hydrogen evolution reaction. Results extended x-ray absorption fine structure investigation density functional theory calculation suggest that active sites are associated lattice-confined centers activated (C)/nitrogen (N) at adjacency centers. This may provide insights into constructing highly efficient single-atom catalysts different energy-related applications.