DNA‐Programmed Amorphous PtCu Nanohybrids With Spatially Partitioned Functions for Hydrogen Evolution
Abstract
ABSTRACT Amorphous atomically thin metals offer an exceptionally high density of catalytically active sites, yet their practical electrocatalytic performance is often constrained by kinetic limitations arising from inefficient charge transport and restricted mass exchange within disordered ultrathin domains. This mismatch between local surface reactivity and macroscopic reaction kinetics represents a fundamental barrier to fully exploiting amorphous metallic catalysts. Here, we report a hierarchically integrated amorphous PtCu architecture in which atomically thin PtCu nanosheets and interconnected PtCu nanotubes are spatially interwoven to establish distinct yet strongly coupled reaction and transport domains. Within this architecture, the amorphous nanosheets function as highly active catalytic interfaces, while the contiguous nanotube network provides a continuous transport backbone that enables rapid electron percolation and efficient reactant diffusion. This deliberate functional partitioning effectively decouples surface reactivity from transport constraints, thereby alleviating the intrinsic kinetic bottlenecks of amorphous two‐dimensional metals. As a consequence, the PtCu nanotube‐nanosheet hybrid delivers markedly enhanced hydrogen evolution kinetics and Pt utilization efficiency, surpassing most reported Pt‐based electrocatalysts. More broadly, this work demonstrates that transport‐enabled structural integration can fundamentally reshape the electrocatalytic behavior of amorphous metals, establishing a transferable structural design strategy for converting atomic‐scale disorder into macroscopic catalytic efficiency.
Article Details
Authors (10)
Le Li
Huiyu Miao
Xi'an Key Laboratory of Functional Supramolecular Structure and Materials College of Chemistry and Materials Science Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education Northwest University Xi'an Shaanxi P. R. China
Xiangjun Zheng
State Key Laboratory of Silicon and Advanced Semiconductor Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou P. R. China
Xinyi Li
Mengyan Lei
Xi'an Key Laboratory of Functional Supramolecular Structure and Materials College of Chemistry and Materials Science Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education Northwest University Xi'an Shaanxi P. R. China
Li Sun
Xiaoguo Liu
State Key Laboratory of Synergistic Chem-Bio Synthesis, School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules, Zhangjiang Institute for Advanced Study and National Center for Translational Medicine
Chunhai Fan
State Key Laboratory of Synergistic Chem-Bio Synthesis, School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules, Zhang Jiang Institute for Advanced Study and National Center for Translational Medicine
Mingqiang Li
State Key Laboratory of Synergistic Chem-Bio Synthesis, State Key Laboratory of Micro-Nano Engineering Science, School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules, Zhangjiang Institute for Advanced Study, and National Center for Translational Medicine
Xiangyuan Ouyang
Xi’an Key Laboratory of Functional Supramolecular Structure and Materials, Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science