Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 10, Pages 5575-5582Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta00040b
Keywords
-
Funding
- National Natural Science Foundation of China [21173141]
- Fundamental Research Funds for the Central Universities [GK201803032, GK201901002]
- China Postdoctoral Science Foundation [2018M633453]
Ask authors/readers for more resources
As a rising-star 2D carbon material, graphdiyne (GDY), has received wide attention for its promising applications in many fields due to its unique butadiyne structure. However, owing to a lack of active sites, GDY just serves as a catalyst support in the electrocatalytic process, especially OER. Developing a new monomer with highly active centers for GDY is an effective strategy to overcome this unfavorable factor. Herein, a metalloporphyrin-based GDY analogue (Co-PDY) with a unique -conjugated structure was innovatively designed and prepared through a Glaser-Hay coupling reaction on copper foam. Cobalt centers of metalloporphyrin moieties can provide numerous electrocatalytic sites for OER; also, the electrons can be transferred rapidly through the butadiyne linkages in the electrocatalytic process. The expanded pore structure (2.34 nm) of Co-PDY also serves as an effective transmission channel for small molecule diffusion to maintain the following catalytic process. These three factors altogether endow Co-PDY with excellent OER catalytic performance, including a small overpotential of 270 mV at 10 mA cm(-2), a low Tafel slope of (99 mV dec(-1)), and promising long-term stability and durability. Meanwhile, the Co-PDY/CF electrode also displayed an acceptable electrocatalytic performance for HER in alkaline media. Profiting from the above characteristics, Co-PDY can be regarded as a promising electrocatalyst for new energy devices.
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