期刊
SMALL
卷 16, 期 33, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202002550
关键词
multifunctional Ni(3)S(2)nanosheets; oxygen evolution reaction; photogenerated carriers; photothermal performance; solar energy
类别
资金
- National Natural Science Foundation of China [21775142]
- Sino-German Center for Research Promotion [GZ 1351]
- Key Scientific and Technical Innovation Engineer Project of Shandong [2019JZZY010905]
- Fundamental Research Funds for the Central Universities [201961059]
Electrochemical water splitting for hydrogen production is currently hindered by the sluggish kinetic of anodic oxygen evolution reaction (OER). By integrating photothermal materials into electrocatalytic network and thus allowing solar energy to work as additional driving force, the OER is expected to be boosted. However, the rational design of such electrochemical system still remains a challenge due to the spatial inconsistency between photothermal component and electrocatalytic component. Herein, it is reported that multifunctional nickel sulfide (Ni3S2) nanosheet arrays show both photothermal and electrocatalytic properties for solar-intensified electrocatalytic system, which well eliminates the spatial inconsistency between the aforementioned two types of functional components by using one bifunctional material. The deliberate design of nanoarray architecture formed by the interconnected Ni(3)S(2)nanosheets endows larger surface area and higher surface roughness, thus enhancing light absorption by suppressing diffuse reflection and facilitating electron transfer in electrocatalytic reactions. Therefore, the OER activity is significantly improved. Under light illumination, the current density of Ni(3)S(2)nanosheets could reach 492.2 mA cm(-2)at 1.55 V, about 2.5-fold that in dark conditions, with a Tafel slope of as low as 60 dec(-1). The solar-intensified electrochemical system based on multifunctional material presents prospective potential in electrochemical water splitting for efficient hydrogen production.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据