期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 39, 页码 35764-35769出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b12675
关键词
nitrogen reduction reaction; electrocatalysis; electrospinning; Cr3C2@C nanofiber; density functional theory
资金
- National Natural Science Foundation of China [21575137, 51702039]
Industrial production of NH3 heavily depends on the conventional Haber-Bosch process under rigorous conditions with a large amount of energy consumption and carbon emissions. Electrocatalysis exhibits an intriguing prospect for the N-2 reduction reaction (NRR) at ambient conditions. In this case, a high-efficiency and low-cost catalyst is paramount. In this letter, Cr3C2 nanoparticles and carbon nanofiber composite (Cr3C2@CNF) are proposed as a noble-metal-free NRR electrocatalyst for converting N-2 to NH3 with an excellent selectivity. The optimal Faradic efficiency and NH3 yield rate achieved are as high as 8.6% and 23.9 mu g h(-1) mg(cat)(-1) at -0.3 V vs reversible hydrogen electrode in 0.1 M HCl, respectively. Theoretical calculations show a low reaction barrier of merely 0.53 eV in the enzymatic route for this catalyst.
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