法拉第效率
催化作用
可逆氢电极
煅烧
电池(电)
硼
材料科学
化学工程
电催化剂
密度泛函理论
氢
功率密度
氢气储存
碳纤维
电极
解吸
化学
无机化学
作者
Shuai Liu,Mengmeng Jin,Jiaqiang Sun,Yongji Qin,Sanshuang Gao,Yu Chen,Shusheng Zhang,Jun Luo,Xijun Liu
标识
DOI:10.1016/j.cej.2022.135294
摘要
Electrocatalytic CO2 reduction reaction (CRR), powered by renewable energy sources, is a promising route to address energy and environmental issues. Herein, we fabricate single atomic Fe sites anchored on B and N co-doped carbon (Fe-SA/BNC), which showed excellent CRR activity, achieving a highest Faradaic efficiency of ∼ 94% at −0.7 V versus reversible hydrogen electrode. The performance is much better than that of the B-free sample. Furthermore, an outstanding current density of ∼ 130 mA cm−2, as well as ∼ 99% Faradaic efficiency, has been achieved using the membrane electrode assembly (MEA). Details of density functional theory (DFT) calculations revealed that the introduction of B was beneficial for the desorption of *CO. The Zn-CO2 battery was then assembled, which reached a high peak power density of 1.18 mW cm−2 at a current density of 4 mA cm−2, as well as showing remarkable stability for CO production.
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