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Nitrogen doped CoP on ammoniated black phosphorus nanosheets enabling highly efficient hydrogen evolution
Liang Fang1, Yanping Xie2, Feiya Xu2
1Collaborative Innovation Center of Henan Province for Energy-Saving Building Materials, Xinyang Normal University, Xinyang, Henan, 464000, China. fangliang@xynu.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|August 18, 2023
Summary
We developed a new electrocatalyst, nitrogen-doped CoP on ammoniated black phosphorus (N-CoP/NH2-BP), for efficient hydrogen evolution. This sustainable material offers a cost-effective approach to renewable hydrogen energy production.
Area of Science:
- Materials Science
- Electrochemistry
- Renewable Energy
Background:
- Developing efficient and sustainable electrocatalysts is crucial for renewable hydrogen energy.
- Current methods face challenges in cost-effectiveness and performance.
Purpose of the Study:
- To design and synthesize a novel heterostructure electrocatalyst for the hydrogen evolution reaction (HER).
- To investigate the synergistic effects between nitrogen-doped cobalt phosphide (N-CoP) and ammoniated black phosphorus (NH2-BP) for enhanced HER activity.
Main Methods:
- Synthesized N-CoP nanocrystals on NH2-BP nanosheets using reactive defects and NH3 gas.
- Fabricated N-CoP/NH2-BP heterostructures for HER testing.
- Characterized the electrocatalytic performance in an alkaline electrolyte.
Main Results:
- The N-CoP/NH2-BP heterostructure demonstrated low overpotentials (90 mV at 10 mA cm-2 and 246 mV at 200 mA cm-2).
- Achieved excellent HER activity attributed to the synergistic effect between N-CoP and NH2-BP.
- NH2-BP facilitated charge transfer and provided active sites, while N-CoP modulated electronic structure.
Conclusions:
- N-CoP/NH2-BP serves as a highly active and novel electrocatalyst for HER.
- This study presents a straightforward strategy for designing phosphorene-based electrocatalysts.
- The findings contribute to advancements in efficient hydrogen evolution technologies.
