title: Hierarchical Mesoporous SnO2Nanosheets on Carbon Cloth: A Robust and Flexible Electrocatalyst for CO2Reduction with High Efficiency and Selectivity.
abstract: Electrochemical reduction of CO2into liquid fuels is a promising approach to achieve a carbon-neutral energy cycle. However, conventional electrocatalysts usually suffer from low energy efficiency and poor selectivity and stability. A 3D hierarchical structure composed of mesoporous SnO2nanosheets on carbon cloth is proposed to efficiently and selectively electroreduce CO2to formate in aqueous media. The electrode is fabricated by a facile combination of hydrothermal reaction and calcination. It exhibits an unprecedented partial current density of about 45 mA cm-2at a moderate overpotential (0.88 V) with high faradaic efficiency (87±2 %), which is even larger than most gas diffusion electrodes. Additionally, the electrode also demonstrates flexibility and long-term stability. The superior performance is attributed to the robust and highly porous hierarchical structure, which provides a large surface area and facilitates charge and mass transfer.
authors.affiliation: School of Chemistry, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.|ARC Centre of Excellence for Electromaterials Science, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.
authors.forename: Fengwang
authors.initials: F
authors.lastname: Li
authors.affiliation: School of Chemistry, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.
authors.forename: Lu
authors.initials: L
authors.lastname: Chen
authors.affiliation: School of Chemistry, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.
authors.forename: Gregory P
authors.initials: GP
authors.lastname: Knowles
authors.affiliation: School of Chemistry, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.|ARC Centre of Excellence for Electromaterials Science, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.
authors.forename: Douglas R
authors.initials: DR
authors.lastname: MacFarlane
authors.affiliation: School of Chemistry, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.|ARC Centre of Excellence for Electromaterials Science, Monash University, Wellington Road, Clayton, 3800, VIC, Australia.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
keywords: 3D electrodes; CO2 reduction; electrocatalysis; nanosheets; nanostructures