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
收藏
页码：7806 / 7809
页数：4
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