title: Highly selective and active CO2reduction electrocatalysts based on cobalt phthalocyanine/carbon nanotube hybrid structures.
abstract: Electrochemical reduction of carbon dioxide with renewable energy is a sustainable way of producing carbon-neutral fuels. However, developing active, selective and stable electrocatalysts is challenging and entails material structure design and tailoring across a range of length scales. Here we report a cobalt-phthalocyanine-based high-performance carbon dioxide reduction electrocatalyst material developed with a combined nanoscale and molecular approach. On the nanoscale, cobalt phthalocyanine (CoPc) molecules are uniformly anchored on carbon nanotubes to afford substantially increased current density, improved selectivity for carbon monoxide, and enhanced durability. On the molecular level, the catalytic performance is further enhanced by introducing cyano groups to the CoPc molecule. The resulting hybrid catalyst exhibits >95% Faradaic efficiency for carbon monoxide production in a wide potential range and extraordinary catalytic activity with a current density of 15.0 mA cm-2and a turnover frequency of 4.1 s-1at the overpotential of 0.52 V in a near-neutral aqueous solution.
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.|Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, USA.
authors.forename: Zishan
authors.initials: Z
authors.lastname: Wu
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Liewu
authors.initials: L
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Haomin
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Xiaolu
authors.initials: X
authors.lastname: Yu
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Zisheng
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.
authors.forename: Yongye
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.|Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, USA.
authors.forename: Hailiang
authors.initials: H
authors.lastname: Wang