光電気化学的な水蒸気分解の総説論文がEnergy Materials誌に公開されました。
Our mini-review on photoelectrochemical water vapor splitting has been published in Energy Materials (OAE Publishing).
F. Amano*,K. Tsushiro, "Proton exchange membrane photoelectrochemical cell for water splitting under vapor feeding", Energy Materials, 2024,4, Article 400006, Mini Review, Special Issue in Interface Engineering in (Photo)electrochemical Systems, http://dx.doi.org/10.20517/energymater.2023.77
This review provides an overview of recent advancements in vapor-fed photoelectrochemical (PEC) systems specifically designed for utilizing water vapor as a hydrogen resource. The PEC system under water vapor feeding utilizes a proton exchange membrane as a solid polymer electrolyte. Additionally, it utilizes gas-diffusion photoelectrodes composed of a fibrous conductive substrate with macroporous structures. Herein, the porous photoelectrodes are composed of n-type oxides for oxygen evolution reactions and used with a Pt electrocatalyst cathode for hydrogen evolution reactions. The topics covered include the conceptual framework of vapor-fed PEC hydrogen production, strategic design of gas-phase PEC reaction interfaces, and development of porous photoanodes such as titanium dioxide (TiO_{2}), strontium titanate (SrTiO_{3}), tungsten trioxide (WO_{3}), and bismuth vanadate (BiVO_{4}). A significant enhancement in the PEC efficiency was achieved through the application of a thin proton-conducting ionomer film on these porous photoelectrodes for surface functionalization. The rational design of proton exchange membrane-based PEC cells will play a pivotal role in realizing renewable-energy-driven hydrogen production from atmospheric humidity in the air.