Dendritic Cu: a high-efficiency electrocatalyst for N2 fixation to NH3 under ambient conditions

被引：66

作者：

Li, Chengbo ^{[1
]}

Mou, Shiyong ^{[1
]}

Zhu, Xiaojuan ^{[2
,3
]}

Wang, Fengyi ^{[2
]}

Wang, Yuting ^{[2
]}

Qiao, Yanxia ^{[2
]}

Shi, Xifeng ^{[4
]}

Luo, Yonglan ^{[3
]}

Zheng, Baozhan ^{[5
]}

Li, Quan ^{[1
]}

Sun, Xuping ^{[2
]}

机构：

[1] Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610068, Sichuan, Peoples R China

[2] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

[3] China West Normal Univ, Chem Synth & Pollut Control Key Lab Sichuan Prov, Coll Chem & Chem Engn, Nanchong 637002, Sichuan, Peoples R China

[4] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China

[5] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2019年 / 55卷 / 96期

基金：

中国国家自然科学基金;

关键词：

NITROGEN; AMMONIA; REDUCTION; WATER; NANOPARTICLES; NANOSHEET;

D O I：

10.1039/c9cc08234d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The artificial N-2 fixation to NH3 is dominated by the traditional Haber-Bosch process, which consumes large amounts of energy and natural gas with low energy efficiency and large amounts of CO2 emissions. Electrochemical N-2 reduction is a promising and environmentally friendly route for artificial N-2-to-NH3 fixation under milder conditions. Herein, we report that dendritic Cu acts as a highly active electrocatalyst to catalyze N-2 to NH3 fixation under ambient conditions. When tested in 0.1 M HCl, such an electrocatalyst achieves a high faradaic efficiency of 15.12% and a large NH3 yield rate of 25.63 mu g h(-1) mg(cat.)(-1) at -0.40 V versus a reversible hydrogen electrode. Notably, this catalyst shows high electrochemical stability and excellent selectivity toward NH3 synthesis.

引用

页码：14474 / 14477

页数：4

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