High Performance Core-Shell Ni/Ni(OH)2 Electrospun Nanofiber Anodes for Decoupled Water Splitting

Abstract

<ul> <li>Large surface area porous electrodes prepared from electrospun Ni and Ni-Co fibers</li> <li>A Ni/Ni(OH)<sub>2</sub> core/shell structure produced by galvanic cycling in alkaline media</li> <li>Electrodes with improved current density and charge capacity </li> <li>High efficiency decoupled water splitting with Ni/Ni(OH)<sub>2</sub> redox mediator</li> </ul>

High Performance Core/Shell Ni/Ni(OH)2 Electrospun Nanofiber Anodes for Decoupled Water Splitting

“…There are several key performance metrics in the selection and optimization of redox anodes for electrochemical‐chemical water splitting. [ 40 ] As discussed in the previous section, the first critical metric is the anode's redox potential, which directly influences the cell voltage (see Equation (5)) and, therefore, the process's voltage efficiency. Here, E‐TAC tests were carried out with potentiostatic charging steps at constant polarization potentials of either 1.48 or 1.43 V RHE , to directly control the anode's charging potential.…”