An amorphous WC thin film enabled high-efficiency N2 reduction electrocatalysis under ambient conditions

被引：51

作者：

Li, Shaoxiong ^{[1
]}

Luo, Yonglan ^{[1
]}

Yue, Luchao ^{[2
]}

Li, Tingshuai ^{[2
]}

Wang, Yan ^{[2
]}

Liu, Qian ^{[3
]}

Cui, Guanwei ^{[4
]}

Zhang, Fang ^{[5
]}

Asiri, Abdullah M. ^{[6
,7
]}

Sun, Xuping ^{[2
]}

机构：

[1] China West Normal Univ, Chem Synth & Pollut Control Key Lab Sichuan Prov, Sch Chem & Chem Engn, Nanchang 637002, Sichuan, Peoples R China

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

[3] Chengdu Univ, Inst Adv Study, Chengdu 610106, Sichuan, Peoples R China

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

[5] Natl Engn Res Ctr Nanotechnol, 28 East Jiang Chuan Rd, Shanghai 200241, Peoples R China

[6] King Abdulaziz Univ, Chem Dept, Fac Sci, POB 80203, Jeddah 21589, Saudi Arabia

[7] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, POB 80203, Jeddah 21589, Saudi Arabia

来源：

CHEMICAL COMMUNICATIONS | 2021年 / 57卷 / 63期

基金：

中国国家自然科学基金;

关键词：

NITROGEN-FIXATION; AMMONIA-SYNTHESIS; CHALLENGES; CATALYST; GRAPHENE;

D O I：

10.1039/d1cc03139b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ambient electrochemical N-2 reduction offers a promising alternative to the energy-intensive Haber-Bosch process towards renewable NH3 synthesis in aqueous media but needs efficient electrocatalysts to enable the N-2 reduction reaction (NRR). Herein, we propose that an amorphous WC thin film magnetron sputtered onto a graphite foil behaves as a superb NRR electrocatalyst for ambient NH3 production with excellent selectivity. In 0.5 M LiClO4, it attains a large NH3 yield of 43.37 mu g h(-1) mg(cat)(-1). and a high faradaic efficiency of 21.65% at -0.10 V vs. reversible hydrogen electrode. Impressively, this catalyst also shows excellent selectivity and strong durability for NH3 formation.

引用

页码：7806 / 7809

页数：4

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