Journal
ACS ENERGY LETTERS
Volume 4, Issue 9, Pages 2251-2258Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.9b01691
Keywords
-
Categories
Funding
- Special Fund for Scientific and Technological Innovation Talents of Harbin Science and Technology Bureau [2017RAQXJ101, 2017RAQXJ057]
- Fundamental Research Foundation for Universities of Heilongjiang Province [LGYC2018JC008]
- National Natural Science Foundation of China [21676066]
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education Open Project Fund
Ask authors/readers for more resources
It is a great challenge to obtain oriented design and synthesis of new two-dimensional covalent organic frameworks (2D-COFs) with proper CN stoichiometry, N position, and band structures as specific electrocatalysts. Driven by density functional theory (DFT) calculations, we designed and synthesized a new phenazine-linked 2D-COF (COF-C4N) by solvothermal reaction of triphenylenehexamine (TPHA) and hexaketocyclohexane (HKH). Structural analysis confirmed that COF-C4N possesses an ordered crystalline structure with a highly conjugated basal plane and better stability. COF-C4N exhibited OER performance with a low overpotential of 349 mV at 10 mA cm(-2) and a Tafel slope of 64 mV dec(-1). A combination of theoretical and experimental studies revealed that better OER performance is attributed to better crystallinity and stability, an appropriate band gap, and an N position that promotes the formation of C active sites around N atoms. The strategy of theory-driven design and targeting synthesis of 2D-COFs for OER may provide a new way to further develop metal-free materials for clean energy application.
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