Highly boosted gas diffusion for enhanced electrocatalytic reduction of N-2 to NH3 on 3D hollow Co-MoS2 nanostructures
发布时间：2020-04-15
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2020-03-14
- 发表刊物：
- NANOSCALE
- 收录刊物：
- SCIE
- 文献类型：
- J
- 卷号：
- 12
- 期号：
- 10
- 页面范围：
- 6029-6036
- ISSN号：
- 2040-3364
- 摘要：
- Transition metal chalcogenide MoS2 catalysts are highly selective for the electrochemical reduction of dinitrogen (N-2) to ammonia (NH3) in aqueous electrolytes. However, due to the low solubility of N-2 in water, limited N-2 diffusion and mass transport have heavily restricted the yield and the faradaic efficiency (FE). Here, we have demonstrated a highly efficacious assembled gas diffusion cathode with hollow Co-MoS2/N@C nanostructures to significantly improve the electrochemical reduction of N-2 to NH3. Our results revealed that the synthesized Co-MoS2 heterojunctions with abundant graphitic N groups exhibited a superb NH3 yield of 129.93 mu g h(-1) mg(cat)(-1) and a high faradaic efficiency of 11.21% at -0.4 V vs. the reversible hydrogen electrode (RHE), as well as excellent selectivity and stability. The strategy described in this study offers new inspiration to design high-performance electrocatalyst assemblies for the sustainable environmental and energy applications.
- 第一作者
- Zeng, Libin
- 合写作者
- Rahmati, Farnood,van der Zalm, Joshua,Chen, Aicheng,Li, Xinyong,Chen, Shuai,Wen, Jiali
- 通讯作者
- Chen, AC (reprint author), Univ Guelph, Dept Chem, Electrochem Technol Ctr, 50 Stone Rd East, Guelph, ON N1G 2W1, Canada.