Journal
INORGANIC CHEMISTRY
Volume 57, Issue 12, Pages 7380-7389Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.8b01020
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21771137]
- Shandong Provincial Natural Science Foundation [ZR2016BM12]
- Fundamental Research Funds for the Central Universities [15CX08010A]
- start-up fund of TJUT
- Training Project of Innovation Team of Colleges and Universities in Tianjin [TD13-5020]
Ask authors/readers for more resources
The hierarchical CuCo2O4@carbon quantum dots (CQDs) hollow microspheres constructed by 1D porous nanowires have been successfully prepared through a simple CQDs-induced hydrothermal self-assembly technique. XPS analysis shows the CuCo2O4@CQDs possesses the Co(II)-rich surface associated with the oxygen vacancies, which can effectively boost the Faradaic reactions and oxygen evolution reaction (OER) activity. For example, the as-synthesized 3D porous CuCo2O4@CQDs electrode exhibits high activity toward overall electrochemical water splitting, for example, an overpotential of 290 mV for OER and 331 mV for hydrogen evolution reaction (HER) in alkaline media have been achieved at 10 mA cm(-2), respectively. Furthermore, an asymmetric supercapacitor (ASC) (CuCo2O4@CQDs//CNTs) delivers a high energy density of 45.9 Wh kg(-1) at 763.4 W kg(-1), as well as good cycling ability. The synergy of Co(II)-rich surface, oxygen vacancies, and well-defined 3D hollow structures facilitates the subsequent surface electrochemical reactions. This work presents a facile method to fabricate energetic nanocomposites with highly reactive, durable, and universal functionalities.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available