30 January 2024 to 27 February 2024
University of Houston - Main Campus
US/Central timezone

NiMo based bifunctional catalysts for water electrolysis

24 Feb 2024, 14:24
12m
University of Houston - Main Campus

University of Houston - Main Campus

101 Farish Hall
Talk Condensed Matter Physics Material Science

Speaker

Navmi Naik

Description

Seawater electrolysis stands as a promising technology for sustainable hydrogen production and desalination. It consists of two processes, Oxygen Evolution Reaction (OER) and Hydrogen Evolution Reaction (HER). A bifunctional catalyst plays the crucial role of performing both these reactions simultaneously thus reducing the cost of this technology. This study focuses on the synthesis and evaluation of a bifunctional catalyst, NiFe/NiMo. Due to the good HER and OER activity of this catalyst, the AEM electrolyzer exhibited a good performance for water electrolysis, achieving a current density of 1000 mA $cm^{-2}$ at 1.87 V. Further experiments under quasi-industrial conditions (6 M KOH & seawater, 60 °C) showed that a three electrode electrolyzer delivered a current density 1000 mA $cm^{-2}$ at a low voltage of 1.63 V. Stability testing of the electrolyzer showed that it exhibited good durability for over 100h. This work presents a general and economic approach towards the development of a bifunctional catalyst for water electrolysis.

Academic year 3rd year
Research Advisor Dr. Zhifeng Ren

Author

Co-author

Dr Zhigeng Ren (University of Houston)

Presentation materials