Novel flowable lithium-ion battery

Significant advancement in electrochemical storage materials and energy storage systems has been made in the past few decades. Among these, redox flow batteries (RFB) have paved the way for storing a large amount of renewable energy created through solar or wind sources. Semi-solid redox flow batteries (SSRFBs) were invented in 2009 and has gained increased attention. In conventional redox flow battery, vanadium-based electrolytes acting as electrodes are circulated through the cell to achieve energy storage. In an SSRFB, solid active materials (e.g. lithium cobalt oxide (LiCoO2) and graphite) and electron conductive additives (e.g. Ketjen Black) are suspended in organic electrolyte solutions to form slurry electrodes, making a flowable lithium-ion battery possible. It has been shown that the energy density is significantly greater in SSRFBs than that in RFBs, but lithium-based active materials are expensive to synthesise. This project aims integrate a lithium-based slurry electrode with common lithium salt solutions in an SSRFB. This would lead to development of high-performance batteries that store energy cost-effectively.

Supervisors:

The University of Melbourne: Sandra Kentish, Kevin Li, Amanda Ellis, and George Chen.

RWTH Aachen: Deniz Rall, John Linkhorst, Matthias Wessling, and Korcan Perci.