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A strategy of asymmetric local structure based on mesoporous MoO2 toward efficient electrocatalysis
Xinyue Zheng1, Wenjing Wang1, Gan Jia2
1Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China. zsli@nju.edu.cn.
Chemical Communications (Cambridge, England)
|July 19, 2021
Summary
Designing asymmetric local structures in mesoporous molybdenum dioxide (MoO2) nanostructures using heteroatom doping significantly boosts water oxidation performance by enhancing active sites.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Developing efficient electrocatalysts for water oxidation is crucial for sustainable energy technologies.
- Molybdenum dioxide (MoO2) nanostructures offer potential but require optimization for enhanced catalytic activity.
- Asymmetric local structures can improve the number and intrinsic activity of catalytic sites.
Purpose of the Study:
- To design and synthesize asymmetric local structures in highly ordered mesoporous MoO2 nanostructures.
- To investigate the effect of substitutional heteroatom doping on MoO2 nanostructures.
- To enhance the water oxidation performance of MoO2-based electrocatalysts.
Main Methods:
- Density functional theory (DFT) calculations were used for theoretical design.
- A substitutional heteroatom-doping approach was employed for material synthesis.
- Characterization of the nanostructures and electrochemical testing for water oxidation were performed.
Main Results:
- Asymmetric local structures were successfully designed and synthesized in mesoporous MoO2.
- Heteroatom doping led to increased numbers of active sites.
- The intrinsic activity of the active sites was also enhanced.
- A significant boost in water oxidation performance was observed.
Conclusions:
- Synergistic strategies involving asymmetric structures and heteroatom doping effectively enhance MoO2 electrocatalysts.
- The designed nanostructures show promising potential for efficient water oxidation catalysis.
- This approach offers a pathway for developing advanced electrocatalytic materials.
