Enhancing hydrogen production efficiency in carbon-assisted solid oxide electrolysis cells with dendritic channels anode and Optimal interface

Carbon-assisted solid oxide electrolysis cell (CA-SOEC) presents a promising solution for water electrolysis with reduced energy consumption and enhanced efficiency of hydrogen production. However, one key issue in optimizing CA-SOEC performance is the inefficient mass transfer at the anode layer, particularly in improving the CO–CO 2 shuttle mechanism. To address this issue, this study designs a dendritic channel anode for CA-SOEC, which significantly enhances the CO–CO 2 shuttle, realizing improved mass transfer and reduced polarization resistance. Further, an additional Pd/GDC-Ni nano-catalyst layer was incorporated at the electrode-electrolyte interface, which greatly improved the efficiency and stability of anode layer for long-term electrolysis process, presenting a current density of 1.41 A cm −2 under a low voltage of 1.0 V. This research will help to provide new ideas and technical support for the design of highly efficient and environmentally friendly anode layer of CA-SOEC for water electrolysis.