Placeholder text
Catalytic Activity of Non-Metal Doped Graphene for Electrocatalytic ORR
By Jinlong Wang
0 - Default Title
Description
Most dopants (B, P, As, Si, S) lose electrons, becoming positively charged with small magnetic moments, serving as primary active sites. Highly electronegative dopants (N, O, F, Cl) gain electrons, making adjacent carbon atoms the active sites, potentially creating multiple catalytic centers.
Adsorption strength directly affects activity: weak adsorption hinders *O¿/*OOH hydrogenation, while strong adsorption limits *O/*OH hydrogenation, possibly favoring 2e¿ H¿O¿ formation over the 4e¿ pathway.
By analyzing Gibbs free energy changes, the rate-determining steps were identified. The As-N¿ configuration shows exceptional stability and activity, with an overpotential of 0.53 V. Dual/multiple doping effectively tunes graphene's electronic structure, optimizing intermediate adsorption and enhancing performance.
Optimal adsorption energies were determined: O¿ (¿0.55 eV), OOH (¿1.81 eV), O (¿3.33 eV), OH (¿2.42 eV). Near these values, ¿G at 1.23 V approaches zero, enabling prediction of rate-limiting steps. This validated method aids in screening high-performance ORR catalysts.
In summary, this work provides key insights for improving nonmetal-doped graphene's ORR activity and designing advanced electrocatalysts.
Product details
- Binding:
- Paperback
- Number of Pages:
- 102
- Release Date:
- 2025-06-13
- Publication Date:
- 2025-11-07
- Publisher:
- Eliva Press
- Languages:
- Original: English
- ISBN10:
- 9999326501
- ISBN13:
- 9789999326506
- GPSR Manufacturer Reference:
- [email protected]
- Weight:
- 161 g
- Height:
- 152 cm
- Width:
- 229 cm
- Thickness:
- 6 cm
Currently sold out