Open AccessTheoretical Study Oxygen Reduction Activity of Phosphorus-doped Graphene Nanoribbons
Author(s) -
Zeming Xie,
Chao Liu,
Mingming Luo,
Zhao Liang,
Shaik Gouse Peera,
Tongxiang Liang
Publication year - 2020
Publication title -
journal of material science and technology research
Language(s) - English
Resource type - Journals
ISSN - 2410-4701
DOI - 10.31875/2410-4701.2020.07.03
Subject(s) - graphene , endothermic process , density functional theory , catalysis , graphene nanoribbons , adsorption , oxygen reduction reaction , chemistry , doping , electrolyte , materials science , chemical physics , computational chemistry , nanotechnology , chemical engineering , electrochemistry , organic chemistry , electrode , optoelectronics , engineering
Phosphorus-doped graphene is known to exhibit good electrocatalytic activity for oxygen reduction reaction (ORR). While the ORR activity of P-doped graphene nanoribbons (PGNR) is still unclear. Taking the common graphene nanoribbons with the edges of armchair as an example in this study, we research the mechanistic investigation of ORR on the PGNR under acidic electrolytic conditions by density functional theory (DFT). Based on the keen observation of the atomic charge distribution and adsorption energy at different sites, P atom in PGNR is considered to be the strongest adsorption site with oxygen. Detailed ORR mechanistic was deduced by the investigation of reaction heat, reaction barrier for each possible step and molecular dynamics (MD) simulation. Based on our calculations, when the contribution of the intermediate product to the ORR activity is not considered, PGNR does not possess the property as an ORR catalyst due to several high reaction barriers and some endothermic reactions for ORR path.