Journal
CRYSTENGCOMM
Volume 23, Issue 1, Pages 69-81Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ce01527j
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [61705079]
- Program for the Development of Science and Technology of Jilin Province [20190701021GH, 20190103039JH]
- Thirteenth Five-Year Program for Science and Technology of the Education Department of Jilin Province [JJKH20191019KJ, JJKH20190994KJ]
Ask authors/readers for more resources
The study presents a general strategy for the rational design and synthesis of multifunctional 2D porous electrocatalysts, demonstrating excellent electrochemical activity and long-term stability in overall water splitting applications. The porous NiCoSe nanosheet arrays show low overpotential for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), making them promising candidates for future renewable energy systems.
The exploitation of low-cost, efficient and stable electrocatalysts for overall water splitting in alkaline media is critical for future renewable energy systems, yet still remains a great challenge. Herein, we report the in situ growth of porous NiCoSe nanosheet arrays derived from 2D MOFs on Ni foam through a simple ion-exchange reaction followed by a hydrothermal process. Benefiting from the unique 2D multi-porous framework with high electrochemical active surface area, conductivity and open channels for the release of gaseous products, the as-prepared NiCoSe nanosheet arrays exhibit excellent electrochemical activity with a low overpotential of 170 mV for the hydrogen evolution reaction (HER) at 10 mA cm(-2) and 278 mV for the oxygen evolution reaction (OER) at 20 mA cm(-2) and long-term stability. Furthermore, the full cell only requires 1.51 V to drive the current density of 10 mA cm(-2) when the NiCoSe nanosheet arrays are used as both anode and cathode, which also exhibits distinguished durability for over 48 h. The present work presents a general strategy for the rational design and synthesis of multifunctional 2D porous electrocatalysts, which is also expected to extend to other noble-metal-free catalysts.
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