Fabrication of a Cu2O/g‐C3N4/WS2 Triple‐Layer Photocathode for Photoelectrochemical Hydrogen Evolution

• DOI: 10.1002/celc.201700014
• Publication Date: 2017-02-28T14:54:26Z
• Authors: Xintian Xu; Yizhe Liu; Yuanzhi Zhu; Xiaobin Fan; Yang Li; Fengbao Zhang; Guoliang Zhang; Wenchao Peng
• Keywords: Photocathode; Photocurrent; Photoelectrochemistry; Photoelectrochemical cell

Abstract A Cu 2 O/g‐C 3 N 4 /WS triple‐layer photocathode was fabricated by using a layer‐by‐layer assembly method for photoelectrochemical hydrogen evolution. O electrodeposited on the FTO as active layer light harvesting. The chemically inert g‐C can protect unstable and form p‐n junction with to increase light‐to‐electricity conversion efficiency. Mixed‐phase WS nanosheets were obtained through lithium insertion used an effective evolution catalyst photocurrent‐to‐hydrogen conversion. This is evolution, photocurrent of −9.5 mA cm −2 at −0.55 V versus RHE (pH 6.0) be under visible ( λ ≥420 nm, 100 mW ).