Highly active titanium oxide photocathode for photoelectrochemical water reduction in alkaline solution

Xuelan Hou, Lijun Fan, Yicheng Zhao, Peter D. Lund, Yongdan Li*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

35 Lataukset (Pure)

Abstrakti

Developing low-cost, efficient and stable metal oxide cathode catalyst for hydrogen evolution reaction (HER) is of great importance to overcome the major challenge in photoelectrochemical water splitting (PECWS) cell. Anodic titanium dioxide nanotube (TNT) as the electrode has shown promising for its flexibility, economy and efficiency. Herein, a highly active and stable photocathode for HER was achieved with a technique of stepwise cathodic reduction of anodic TNT without loading any cocatalyst. It exhibits a self-improving PECWS performance after the five-step cathodic reduction process. The onset voltage displays an anodic shift from −0.79 to 0.19 V versus the reversible hydrogen electrode (RHE) and the overall current shows an enhancement from −110.06 to −210.66 mA at −1.0 VRHE in 1 M NaOH aqueous solution (pH = 13.6). The photocathode also withstands a voltage @ −1.0 VRHE and a current @ −100 mA in the WS cell for more than 12,000 s sequentially. This work demonstrates a feasible strategy for forming a multijunction composite for efficient HER with the anodic TNT as the precursor.

AlkuperäiskieliEnglanti
Artikkeli231095
Sivumäärä8
JulkaisuJournal of Power Sources
Vuosikerta524
Varhainen verkossa julkaisun päivämäärä3 helmik. 2022
DOI - pysyväislinkit
TilaJulkaistu - 15 maalisk. 2022
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

Sukella tutkimusaiheisiin 'Highly active titanium oxide photocathode for photoelectrochemical water reduction in alkaline solution'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä