期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 12, 页码 10912-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b01789
关键词
Polydopamine; Hierarchical hollow nanostructures; Electrocatalysis; Overall water splitting
资金
- NSFC [21774045]
- JLU Science and Technology Innovative Research Team [2017TD-06]
Because of the energy crisis and environmental problems, the preparation of highly active, stable, and low-cost electrocatalysts for hydrogen evolution (HER) and oxygen evolution (OER) has great meaning to the sustainable development. In this work, we design a novel hierarchical hollow nanocomposite that is made up of CoP hollow nanoparticles (NPs) and hollow N-doped carbon nanocages (CoP@NCHNCs) derived from polydopamine (PDA)/cobalt nanocontainers (PDA/Co HNCs) through a pyrolysis- phosphidation method. PDA was chosen as the carbon precursor and offered both the oxygen atom for the phosphidation process and pyrrolic N to facilitate the electrocatalyst activity. Benefiting from the unique hierarchical hollow structure and pyrrolic N derived from PDA, the CoPg NCHNCs exhibit outstanding performance for overall water splitting. For OER and HER, only a low overpotential of 304 and 93 mV at 10 mA-cm(-2) is needed, respectively. Furthermore, CoP@NCHNCs can be used as anodes and cathodes to achieve 10 m.Acm(-2) at 1.62 V. This work demonstrates the potential of hierarchical hollow materials for electrocatalytic overall water splitting and opens a new way to construct highly active electrocatalysts by using polymers as a precursor.
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