Asymmetric charge distribution boosts hydrogen evolution performance in two-dimensional MoO_(2)/MoS_(2)step heterostructure

作     者：Mengke Kang Xiang Zhang Jingyi Wang Wen Li Tianyu Xue Kun Zhai Jianyong Xiang Anmin Nie Yingchun Cheng Zhongyuan Liu 

作者机构：Center for High Pressure ScienceState Key Lab of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoChina Key Laboratory of Flexible Electronics&Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjingChina Department of ChemistryIllinois Institute of TechnologyChicagoIllinoisUSA 

出 版 物：《Carbon Energy》 (碳能源(英文))

年 卷 期：2025年第7卷第2期

页      面：172-182页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:52288102,52090022,62274087,52472306 Science Research Project of Hebei Education Department,Grant/Award Number:BJ2021040 Natural Science Foundation of Hebei Province of China,Grant/Award Numbers:E2024203054,E2022203109 

主　　题：charge distribution chemical vapor deposition hydrogen evolution reaction interface step heterostructure 

摘      要：Step heterostructures are predicted to hold a profound catalytic performance because of the rearranged electronic structure at their ***,limitations in the morphology of heterostructures prepared by hydrothermal reactions or molten salt-assisted strategies make it challenging to directly assess charge distribution and evaluate a single interface s hydrogen evolution reaction(HER)***,we prepared two-dimensional MoO_(2)/MoS_(2) step heterostructures with a large specific surface area by the chemical vapor deposition *** Kelvin probe force microscopy and electrical transport measurement verified the asymmetric charge distribution at a single *** fabricating a series of micro on-chip electrocatalytic devices,we investigate the HER performance for a single interface and confirm that the interface is essential for superior catalytic *** experimentally confirmed that the enhancement of the HER performance of step heterostructure is attributed to the asymmetric charge distribution at the *** work lays a foundation for designing highly efficient catalytic systems based on step heterostructures.