To develop a method for recovering lithium from cathode leachate using membranes made from graphite.
Fabrication of a graphene oxide-polyethyleneimine (GO-PEI) membrane from spent graphite.
Use of the membrane for selective lithium extraction from cathode leachate.
Evaluation of membrane performance and lithium recovery efficiency.
The GO-PEI membrane effectively recovers lithium from the leachate.
The process demonstrates environmental sustainability by utilizing spent battery materials.
Abstract
This novel strategy of fabricating a GO-PEI membrane from spent graphite offers a green process for recovering lithium from the leachate of spent lithium-ion battery cathode materials.