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In this research project, the separator of rechargeable hybrid aqueous batteries (REHABs) is mechanically strengthened with graphene oxide derivatives. ReHABs comprise of a lithium intercalation cathode, zinc anode and an aqueous electrolyte. One of the problems with current ReHABs is the zinc dendritic growth and propagation from the anode, which significantly reduces its operating lifetime. After cycles of charge/discharge, these dendrites grow and propagate through the separator and eventually reach the cathode, thus shortening the battery. In this project, it is expected that graphene modified separator will suppress the propagation of dendrite and hence prevent them from making contact with the cathode. This will significantly improve the lifetime of current ReHABs. Graphene oxide is chosen for this purpose due to its high mechanical strength and flexibility The partner organization will benefit from the findings of this project to scale-up the process for commercial applications of the ReHABs.
Pu Chen
Moin Ahmed
University of Waterloo
Engineering - chemical / biological
Alternative energy
University of Waterloo
Accelerate
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