Screening of transition metal oxides for electrocatalytic nitrate reduction to ammonia at large currents  

作　　者：Qiongfei Wu Weijie Zhu Dongxu Ma Chao Liang Zhoucheng Wang Hanfeng Liang 

机构地区：[1]State Key Laboratory of Physical Chemistry of Solid Surfaces,Tan Kah Kee Innovation Laboratory,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [2]College of Chemical Engineering,Tianjin University,Tianjin 300072,China

出　　处：《Nano Research》2024年第5期3902-3910,共9页纳米研究（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities,China(No.20720210010);the National Natural Science Foundation of China(Nos.22001081,22075236);the Science and Technology Projects of Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM,No.HRTP-[2022]-7).

摘　　要：Electrochemical nitrate reduction reaction(NO_(3)RR)towards ammonia,as an emerging and appealing technology alternative to the energy-intensive Haber-Bosch process and inefficient nitrogen reduction reaction,has recently aroused wide concern and research.However,the current research of the NO_(3)RR towards ammonia lacks the overall performance comparison of various electrocatalysts.Given this,we here make a comparison of 12 common transition metal oxide catalysts for the NO_(3)RR under a high cathodic current density of 0.25 A·cm^(-2),wherein Co_(3)O_(4) catalyst displays the highest ammonia Faradaic efficiency(85.15%)and moderate activity(ca.-0.25 V vs.reversible hydrogen electrode).Other external factors,such as nitrate concentrations in the electrolyte and applied potential ranges,have also been specifically investigated for the NO_(3)RR.

关 键 词：nitrate reduction reaction ammonia production transition metal oxides Co_(3)O_(4) 

分 类 号：O64[理学—物理化学]