Electrochemical water splitting by a bidirectional electrocatalyst

S K Tarik Aziz; Mahendra Awasthi; Somnath Guria; Mayuri Umekar; Imran Karajagi; S K Riyajuddin; K V R Siddhartha; Abhishek Saini; Ajay Potbhare; Ratiram G Chaudhary; Vikram Vishal; Prakash C Ghosh; Arnab Dutta

doi:10.1016/j.xpro.2023.102448

Electrochemical water splitting by a bidirectional electrocatalyst

STAR Protoc. 2023 Sep 15;4(3):102448. doi: 10.1016/j.xpro.2023.102448. Epub 2023 Jul 16.

Affiliations

¹ Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
² P.G. Department of Chemistry, S.K. Porwal College, Kamptee, Maharashtra 441001, India.
³ Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
⁴ Institute of Nano Science and Technology, Sector 81, Mohali, Punjab 140306, India.
⁵ Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; Department of Earth Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; National Center of Excellence-CCU, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
⁶ Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; National Center of Excellence-CCU, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India. Electronic address: arnab.dutta@iitb.ac.in.

Abstract

The presence of efficient energy storage and conversion technologies is essential for the future energy infrastructure. Here, we describe crafting a heterostructure composed of a suitably interlinked CeO₂ and polycrystalline Bi₂O₃ dopant prepared on a reduced graphene oxide (Ce_Bi₂O₃@rGO) surface. This material exhibits exceptional electrocatalytic hydrogen and oxygen evolution reaction in alkaline water (pH∼14.0) to trigger the full water-splitting cycle as a Janus catalyst. The stepwise catalyst preparation and electrochemical cell assembly for simultaneous hydrogen and oxygen evolution have been narrated. For complete details on the use and execution of this protocol, please refer to Aziz et al. (2022).¹.

Keywords: Chemistry; Energy; Material Sciences.

MeSH terms

Cell Cycle
Hydrogen*
Oxygen*
Water

Substances

Hydrogen
Oxygen
Water