In:
Energy Technology, Wiley, Vol. 7, No. 4 ( 2019-04)
Abstract:
In photoelectrochemical (PEC) water splitting systems, an overlayer on the surface of the semiconductor has always been pursued with tremendous interest. The multicomponent Fe 2 O 3 /Fe x Sn 1− x O 4 /FeOOH photoanode is designed to achieve efficient water splitting. The photocurrent density of Fe 2 O 3 /Fe x Sn 1− x O 4 /FeOOH photoanode is 1.70 mA cm −2 at 1.23 V vs reversible hydrogen electrode (RHE), improved by 121.1%, compared with that of the pristine hematite photoanode (0.77 mA cm −2 at 1.23 V vs RHE) under air mass (AM) 1.5 illumination (100 mW cm −2 ). Detailed characterization is carried out to explore the main factors of photocurrent enhancement. The excellent PEC performance could be attributed to the synergetic benefits of Fe x Sn 1− x O 4 passivation layer and FeOOH catalyst, which reduce the rate of electron–hole recombination and improve water oxidation reaction kinetics. The results prove a new sight to achieve efficient PEC water splitting.
Type of Medium:
Online Resource
ISSN:
2194-4288
,
2194-4296
DOI:
10.1002/ente.201800899
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2700412-0