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使用经硫化镉（CdS）和铜镓硒（CuGaSe）改性的（银，铜）镓硒（(Ag,Cu)GaSe）光阴极，在阳光驱动下实现从水中持续析氢。

Durable hydrogen evolution from water driven by sunlight using (Ag,Cu)GaSe photocathodes modified with CdS and CuGaSe.

作者信息

Zhang Li, Minegishi Tsutomu, Nakabayashi Mamiko, Suzuki Yohichi, Seki Kazuhiko, Shibata Naoya, Kubota Jun, Domen Kazunari

机构信息

Department of Chemical System Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan . Email:

Institute of Engineering Innovation , The University of Tokyo , 2-11-16 Yayoi , Bunkyo-ku , Tokyo 113-8656 , Japan.

出版信息

Chem Sci. 2015 Feb 1;6(2):894-901. doi: 10.1039/c4sc02346c. Epub 2014 Sep 4.

DOI:10.1039/c4sc02346c
PMID:29560174
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5811107/
Abstract

The photoelectrochemical properties of (Ag,Cu)GaSe (ACGSe) modified by deposition of CdS and CuGaSe layers were investigated. The CdS and CuGaSe layers formed p-n junctions with an appropriate band diagram on the surface of the electrode and they clearly increased the cathodic photocurrent and onset potential. The Pt, CdS, and CuGaSe modified ACGSe (Pt/CdS/CuGaSe/ACGSe) with an appropriate thickness of CuGaSe layers ( 100 nm) showed a cathodic photocurrent of 8.79 mA cm at 0 V and an onset potential of 0.62 V (defined as cathodic photocurrent of 1.0 mA cm) under simulated sunlight irradiation in 0.1 M NaHPO (pH 10). Pt/CdS/CuGaSe/ACGSe showed durable cathodic current under the observed reaction conditions and hydrogen was evolved for about 20 days.

摘要

研究了通过沉积CdS和CuGaSe层改性的(Ag,Cu)GaSe（ACGSe）的光电化学性质。CdS和CuGaSe层在电极表面形成了具有合适能带图的p-n结，它们显著增加了阴极光电流和起始电位。具有合适厚度（100 nm）CuGaSe层的Pt、CdS和CuGaSe改性ACGSe（Pt/CdS/CuGaSe/ACGSe）在0.1 M NaHPO（pH 10）的模拟太阳光照射下，在0 V时显示出8.79 mA cm的阴极光电流，起始电位为0.62 V（定义为阴极光电流为1.0 mA cm）。Pt/CdS/CuGaSe/ACGSe在观察到的反应条件下显示出持久的阴极电流，并且氢气析出约20天。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d512/5811107/d293b0a0cb5d/c4sc02346c-f8.jpg
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