Surface-reconstructed Cu electrode via a facile electrochemical anodization-reduction process for low overpotential CO2 reduction
oleh: Shixiong Min, Xiulin Yang, Ang-Yu Lu, Chien-Chih Tseng, M.N. Hedhili, Zhiping Lai, Lain-Jong Li, Kuo-Wei Huang
| Format: | Article |
|---|---|
| Diterbitkan: | Elsevier 2017-09-01 |
Deskripsi
A high-surface-area Cu electrode, fabricated by a simple electrochemical anodization-reduction method, exhibits high activity and selectivity for CO2 reduction at low overpotential in 0.1 M KHCO3 solution. A faradaic efficiency of 37% for HCOOH and 27% for CO production was achieved with the current density of 1.5 mA cm−2 at −0.64 V vs. RHE, much higher than that of polycrystalline Cu. The enhanced catalytic performance is a result of the formation of the high electrochemical active surface area and high density of preferred low-index facets. Keywords: CO2 reduction, Cu electrode, High-surface-area, High selectivity