3D cauliflower-like Ni foam: a high-efficiency electrocatalyst for ammonia production via nitrite reduction

Ye Li; Xun He; Jie Chen; Xiaoya Fan; Yongchao Yao; Ling Ouyang; Yonglan Luo; Qian Liu; Shengjun Sun; Zhengwei Cai; Sulaiman Alfaifi; Juan Du; Baozhan Zheng; Xuping Sun

doi:10.1039/d3cc03121g

3D cauliflower-like Ni foam: a high-efficiency electrocatalyst for ammonia production via nitrite reduction

Chem Commun (Camb). 2023 Sep 7;59(72):10805-10808. doi: 10.1039/d3cc03121g.

Authors

Ye Li^{1

2}, Xun He², Jie Chen², Xiaoya Fan², Yongchao Yao², Ling Ouyang², Yonglan Luo², Qian Liu³, Shengjun Sun⁴, Zhengwei Cai⁴, Sulaiman Alfaifi⁵, Juan Du¹, Baozhan Zheng^{1

6}, Xuping Sun^{2

4}

Affiliations

¹ College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China. [email protected].
² Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China. [email protected].
³ Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
⁴ College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China.
⁵ Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
⁶ College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China.

PMID: 37594506
DOI: 10.1039/d3cc03121g

Abstract

A 3D cauliflower-like Ni foam on titanium plate (Ni foam/TP) shows high electrocatalytic performance for ambient ammonia (NH₃) synthesis via nitrite (NO₂^-) reduction. In 0.1 M phosphate-buffered saline solution with 0.1 M NO₂^-, such Ni foam/TP attains a high NH₃ Faradaic efficiency (FE) of 95.9% and a large NH₃ yield of 742.7 μmol h^-1 cm^-2 at -0.8 V. Its Zn-NO₂^- battery offers a high power density of 6.2 mW cm^-2 and an NH₃ FE of 90.1%.