期刊
JOURNAL OF ENERGY CHEMISTRY
卷 56, 期 -, 页码 259-263出版社
ELSEVIER
DOI: 10.1016/j.jechem.2020.07.0552095-4956/
关键词
Electrocatalytic nitrogen reduction; Fe catalysts; Tellurides; Density functional theory
资金
- Graduate Teaching Reform Project [JG201922]
- Feitian Scholar Program of Gansu Province, CAS Light of West China Program
- Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University
The study demonstrates that FeTe2 is an effective and durable catalyst for NRR with the capability to activate the reaction and inhibit competing reactions. FeTe2/RGO nanoparticles show exceptional activity in NRR, highlighting the potential of FeTe2 and other earth-abundant metal tellurides for electrocatalytic N2 fixation.
Design of cost-effective, yet highly active electrocatalysts for nitrogen reduction reaction (NRR) is of vital significance for sustainable electrochemical NH3 synthesis. Herein, we have demonstrated, from both computational and experimental perspectives, that FeTe2 can be an efficient and durable NRR catalyst. Theoretical computations unveil that FeTe2 possesses abundant surface-terminated and low-coordinate Fe sites that can activate the NRR with a low limiting potential (-0.84 V) and currently impede the competing hydrogen evolution reaction. As a proof-of-concept prototype, we synthesized FeTe2 nanoparticles supported on reduced graphene oxide (FeTe2/RGO), which exhibited a high NRR activity with the exceptional combination of NH3 yield (39.2 lg h-1 mg-1) and Faradaic efficiency (18.1%), thus demonstrating the feasibility of using FeTe2 and other earth-abundant metal tellurides for electrocatalytic N2 fixation. ? 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
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