过电位
分解水
析氧
异质结
材料科学
电子转移
化学物理
纳米技术
光电子学
光化学
化学
物理化学
电化学
催化作用
电极
光催化
生物化学
作者
Chengming Zhang,Meng Wang,Kaiyue Gao,Haibao Zhu,Jie Ma,Xiaolong Fang,Xiufang Wang,Yi Ding
出处
期刊:Small
[Wiley]
日期:2022-11-21
卷期号:19 (3)
被引量:10
标识
DOI:10.1002/smll.202205706
摘要
The restricted charge transfer and slow oxygen evolution reaction (OER) dynamics tremendously hamper the realistic implementation of SnS2 photoanodes for photoelectrochemical (PEC) water splitting. Here, a novel strategy is developed to construct interfacial NCuS bonds between NC skeletons and SnS2 (CuNC@SnS2 ) for efficient PEC water splitting. Compared with SnS2 , the PEC activity of CuNC@SnS2 photoelectrode is tremendously heightened, obtaining a current density of 3.40 mA cm2 at 1.23 VRHE with a negatively shifted onset potential of 0.04 VRHE , which is 6.54 times higher than that of SnS2 . The detailed experimental characterizations and theoretical calculation demonstrate that the interfacial NCuS bonds enhance the OER kinetic, reduce the surface overpotential, facilitate the separation of photon-generated carriers, and provide a fast transmission channel for electrons. This work presents a new approach for modulating charge transfer by interfacial bond design in heterojunction photoelectrodes toward promoting PEC performance and solar energy application.
科研通智能强力驱动
Strongly Powered by AbleSci AI