Journal
CHEMCATCHEM
Volume 11, Issue 18, Pages 4529-4536Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201901075
Keywords
Electrochemical NH3 synthesis; N-2 reduction reaction; NiO Nanosheet Array; Nitrogen doping; Density functional theory
Categories
Funding
- National Natural Science Foundation of China [51761024]
- CAS Light of West China Program, Feitian Scholar Program of Gansu Province
- Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University
Ask authors/readers for more resources
Electrocatalytic N-2 reduction reaction (NRR) provides a sustainable approach for ambient N-2 fixation. Non-noble transition metal-based electrocatalysts (TMEs) are emerging as the most promising NRR catalysts, but commonly exhibited limited NRR activity. Heteroatom doping is an effective method to improve the electrocatalytic activity of TMEs by finely modulating the electronic structures. Herein, as a proof-of-concept, nitrogen-doped NiO nanosheet array on carbon cloth (N-NiO/CC) was investigated as model heteroatom-doped TMEs for NRR. The N-NiO/CC exhibited the considerably enhanced NRR performance with a NH3 yield of 22.7 mu g h(-1) mg(-1) and an FE of 7.3 % in 0.1 M LiClO4 at -0.5 V (vs. RHE), far superior to those of undoped counterpart. Density functional theory (DFT) calculations revealed that the N-doping could induce the enhanced surface conductivity and upraised d-band center, leading to promoted *NNH stabilization, reduced reaction energy barrier and thus improved NRR performance.
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