Ga-Doped AgInS2 Modified with Co–Pi Co–catalyst for Efficient Photoelectrochemical Water Splitting

  • Qijun Cai
  • Zhifeng LiuEmail author
  • Junwei Li
  • Changcun Han
  • Zhengfu Tong


In this work, AgInS2 photoelectrodes doped with Ga element and deposited Co–Pi co–catalyst have been prepared on FTO substrates by hydrothermal and electrochemical deposition methods. In photoelectrochemical (PEC) measurements, the photocurrent density of AgInS2/Ga5%/Co–Pi photoelectrodes (2.18 mA/cm2 at 1.2 V vs. RHE) is about 3.25 times higher than that of pure AgInS2 photoelectrodes (0.67 mA/cm2 at 1.2 V vs. RHE). The enhanced PEC performance could be ascribed to the improved light absorption by doping Ga element and fast charge separation by depositing Co–Pi co–catalyst. This work highlights that doping appropriate metal element and loading co-catalyst to synergistically modify photoelectrodes are practicable approach for PEC water splitting.

Graphic Abstract


AgInS2 Doping Co–Pi Co–catalyst Photoelectrochemical water splitting 



This work was financially supported by Open Foundation of Hubei Collaborative Innovation Center for High-efficient Utilization of Solar Energy (No. HBSKFZD2017001), the National Science Foundation of China (Grant No. 51702092), Hubei Provincial Natural Science Foundation of China (Grant No. 2018CFB282) and Science Foundation of Hubei University of Technology (Grant No. BSQD2017065).

Supplementary material

10562_2019_3021_MOESM1_ESM.doc (91 kb)
Supplementary material 1 (DOC 91 kb)


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Qijun Cai
    • 1
  • Zhifeng Liu
    • 1
    Email author
  • Junwei Li
    • 1
    • 2
  • Changcun Han
    • 1
  • Zhengfu Tong
    • 1
  1. 1.School of Science & Hubei Provincial Key Laboratory of Green Materials for Light IndustryHubei University of TechnologyWuhanChina
  2. 2.Collaborative Innovation Center of Green Light-Weight Materials and ProcessingHubei University of TechnologyWuhanChina

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