Mesfin Abayneh Kebede
The Council for Scientific and Industrial Research(CSIR), South Africa
Title: Nanostructured LiMn2O4 cathode materials for efficient lithium ion battery energy storage systems
Biography
Biography: Mesfin Abayneh Kebede
Abstract
Nanowire/nanorod architectured electrode(cathode & anode) materials for lithium ion battery have shown significant enhanced electrochemical performance. Lithium ion battery (LIB) has started to penetrate into power sources for electric vehicles and electric energy storage as the need for clean and renewable energy reaches climax. To fully meet the target of using LIBs for electric vehicle suitable electrode materials with high energy and high power density have to be achieved. To date numerous cathode and anode materials have been developed which can deliver high energy and high power density. One of them is high voltage LiMn2O4 can perfectly suit with this purpose, however it suffer sever capacity fading which hinders it to meet the target. Interestingly, the use of nano-architecturing of electrode materials (both cathode and anode) has shown a very promising result to sustain the capacity of the materials with significantly minimized fading. Bulk LiMn2O4 cathode materials are characterised by capacity fading in maintaining only about less than 50% of their initial capacity after 100cycles. By synthesizing nanowire LiMn2O4 their capacity retention increases significantly to about 85% after 100cycles. In our laboratory we sysnthesized LiMn2O4 nanorod cathodes from South African manganese precursor source and they retained 95% after 100cycles. In this talk the advancement of nanostructured cathode and anode materials for LIBs application will be reviewed and our contribution in this regard will also be presented.