Thickness‐ and Particle‐Size‐Dependent Electrochemical Reduction of Carbon Dioxide on Thin‐Layer Porous Silver Electrodes | Zendy

Zhang Lin | Zendy; Wang Zhiyong | Zendy; Mehio Nada | Zendy; Jin Xianbo | Zendy; Dai Sheng | Zendy

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Thickness‐ and Particle‐Size‐Dependent Electrochemical Reduction of Carbon Dioxide on Thin‐Layer Porous Silver Electrodes

Author(s) -

Zhang Lin,

Wang Zhiyong,

Mehio Nada,

Jin Xianbo,

Dai Sheng

Publication year - 2016

Publication title -

chemsuschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.412

H-Index - 157

eISSN - 1864-564X

pISSN - 1864-5631

DOI - 10.1002/cssc.201501637

Subject(s) - overpotential , materials science , electrochemistry , electrochemical reduction of carbon dioxide , chemical engineering , particle (ecology) , catalysis , particle size , layer (electronics) , substrate (aquarium) , electrode , porosity , electrocatalyst , inorganic chemistry , carbon fibers , nanotechnology , chemistry , composite material , organic chemistry , carbon monoxide , oceanography , composite number , engineering , geology

The electrochemical reduction of CO 2 can not only convert it back into fuels, but is also an efficient manner to store forms of renewable energy. Catalysis with silver is a possible technology for CO 2 reduction. We report that in the case of monolithic porous silver, the film thickness and primary particle size of the silver particles, which can be controlled by electrochemical growth/reduction of AgCl film on silver substrate, have a strong influence on the electrocatalytic activity towards CO 2 reduction. A 6 μm thick silver film with particle sizes of 30–50 nm delivers a CO formation current of 10.5 mA cm −2 and a mass activity of 4.38 A g Ag −1 at an overpotential of 0.39 V, comparable to levels achieved with state‐of‐the‐art gold catalysts.

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