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Simultaneous Achieving of High Faradaic Efficiency and CO Partial Current Density for CO 2 Reduction via Robust, Noble‐Metal‐Free Zn Nanosheets with Favorable Adsorption Energy
Author(s) -
Liu Kaihua,
Wang Jiazhi,
Shi Miaomiao,
Yan Junmin,
Jiang Qing
Publication year - 2019
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201900276
Subject(s) - faraday efficiency , materials science , catalysis , electrochemistry , adsorption , current density , chemical engineering , noble metal , density functional theory , porosity , nanotechnology , electrode , inorganic chemistry , metal , chemistry , organic chemistry , metallurgy , computational chemistry , physics , quantum mechanics , composite material , engineering
Electrocatalytic CO 2 reduction to fuels is considered a promising strategy for the sustainable carbon cycle. However, the improvement of the catalytic performance of CO 2 electrocatalysts still poses many challenges, especially achieving the large partial current density of product and high faradaic efficiency simultaneously, which are essential for future applications of the electrochemical CO 2 reduction reaction. In response, herein, an in situ porous Zn catalyst is prepared and exhibits high faradaic efficiency and large CO partial current density at the same time, benefiting from the porous architecture with increased exposure and accessibility of active sites. Furthermore, density functional theory calculations demonstrate that the high faradaic efficiency is attributed to the favorable adsorption energy of the key intermediate, which promotes CO 2 electroreduction to CO.