Carbon Nanotubes Modified Gas Diffusion Electrode for Efficient Electrochemical Reduction of CO2
Electrochemical reduction of CO2(CO2RR)combined with renewable energy is a promis-ing technology for carbon neutrality.The current reactors for CO2RR face challenges of low faradic efficiency(FE)and high cell voltage,especially at high current densities.Here we report a gas diffu-sion electrode(GDE)modified with Ag nanoparticles and carbon nanotubes(CNTs)for CO2RR.It showed that the FE of the electrode modified CNTs reached 93％at 200 mA.cm-2 with a cell voltage of-2.42 V.Compared to the electrode without CNTs modification,the FE increased by 13.7％while the cell voltage reduced by 240 mV.It was probably because the hydrophobic three-dimensional skeleton network formed by CNTs not only increase the dispersion of catalyst particles,but also enhance the CO2 transport for CO2RR.
electrochemical reduction of CO2gas diffusion electrodeflow reactorcarbon nan-otubes
NETL
NSTL
万方数据
