Event date:
May 18 2021 3:00 pm

Development of CoNi based layered double hydroxide for oxygen evolution reaction

Supervisor
Dr. Ali Rauf
Student
Baria Samreen
Venue
Zoom Meetings (Online)
Event
MS Thesis defense
Abstract
Electrochemical water splitting is a promising approach to produce sustainable H2 fuel. However, the sluggish oxygen evolution reaction (OER) taking place at the anode is one of the limitations of the overall process. Therefore to tackle this issue, an OER catalyst with excessive active sites, high performance efficiency is required which should be durable and low cost as well. Recently, layered double hydroxide (LDH) are excessively studied due to their unique 2D layer structure and exceptional physicochemical properties, they have shown promising performances as OER catalysts. In our recent study, we reported the growth of NiCo LDH on Cu2O nanocubes by the two-step co-precipitation method. The development of NiCo LDH@Cu2O in different concentrations have shown promising OER performance in alkaline media., NiCo-LDH@Cu2O showed the best OER performance under optimum composite concentrations. It showed a lower overpotential of 390 mV, and a Tafel slope of 198 mV/dec. The improved catalytic performance shown by NiCo-LDH@Cu2O can be due to its unique 3D structure, which enhanced the electrochemical surface area (ECSA) and the available active sites. NiCo LDH@Cu2O provided interesting insights on ways to improve OER performance and represents a potential class of materials that can be further investigated for similar applications.

Zoom Link: https://lums-edu-pk.zoom.us/j/93320055066?pwd=ZDFWcnRkbTgzWTJiekhEcGxaa…

Meeting ID: 933 2005 5066

Passcode: 021605