fig9
![A novel structure Ti/Fe<sub>2</sub>O<sub>3</sub>/Cu<sub>2</sub>S/Co(OH)<sub>x</sub> enhances the photoelectrochemical water splitting performance of iron oxide](https://image.oaes.cc/7beb1c46-18bf-45fd-92f9-d78ee9316ee2/cs3068.fig.9.jpg)
Figure 9. EIS and Equivalent Circuit of Ti/Fe2O3 photoanode, Ti/Fe2O3/Cu2S photoanode and Ti/Fe2O3/Cu2S/Co(OH)x photoanode at (A) 1.23 V vs. RHE and at (B) OCP. EIS: Electrochemical impedance spectroscopy; RHE: reversible hydrogen electrode; OCP: open circuit potential.