@inproceedings{b71e4280060e43fe93cd3318f7b0fc33,
title = "Solar-Driven Reduction of 1 atm CO2 to Formate at 10% Energy-Conversion Efficiency by Use of a TiO2-Protected III-V Tandem Photoanode in Conjunction with a Bipolar Membrane and a Pd/C Cathode Electrocatalyst",
abstract = "A solar-driven CO2-reduction (CO2R) cell, consisting of a tandem GaAs/InGaP/TiO2/Ni photoanode in 1.0 M KOH(aq) (pH=13.7) to facilitate the oxygen-evolution reaction (OER), a Pd/C nanoparticle-coated Ti mesh cathode in 2.8 M KHCO3(aq) (pH=8.0) to perform the CO2R reaction, and a bipolar membrane to allow for steady-state operation of the catholyte and anolyte at different bulk pH values, was constructed. At the operational current density of 8.5 mA cm-2, in 2.8 M KHCO3(aq), the cathode exhibited <100 mV overpotential and >94% Faradaic efficiency for the reduction of 1 atm of CO2(g) to formate. The anode exhibited 320 ± 7 mV overpotential for the OER in 1.0 M KOH(aq), and the bipolar membrane exhibited ∼480 mV voltage loss with minimal product crossover as well as >90% and >95% selectivity for protons and hydroxide ions, respectively. The solar-driven CO2R cell converted sunlight to fuels at an energy-conversion efficiency of ∼10%.",
author = "Xinghao Zhou and Rui Liu and Ke Sun and Yikai Chen and Erik Verlage and Francis, {Sonja A.} and Lewis, {Nathan S.} and Xiang, {Cheng Xiang}",
note = "Publisher Copyright: {\textcopyright} The Electrochemical Society. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; Processes at the Semiconductor Solution Interface 7, PSSI 2017 - 231st ECS Meeting 2017 ; Conference date: 28-05-2017 Through 01-06-2017",
year = "2017",
doi = "10.1149/07704.0031ecst",
language = "English",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "4",
pages = "31--41",
editor = "A. Hillier and C. O'Dwyer and Lynch, {R. P.} and H. Wang and M. Sunkara and Buckley, {D. N.} and A. Etcheberry and P. Vereecken",
booktitle = "Processes at the Semiconductor Solution Interface 7",
edition = "4",
}