Na-ion batteries (NIBs) have been recently reconsidered for storing the electricity from renewable energy due to the abundant sodium resources and low cost. The successful application of NIBs largely depends on the innovation of low-cost and high-performance electrode materials. Here we designed a P2-type layered oxide cathode Na-[Li-Mn]-O, which exhibits exceptionally reversible Na storage capacity of ~270 mAh/g based on charge compensations of both transition metal and anionic redox reactions. For the anode side, we developed a 400 mAh/g high-capacity carbon anode, and its main characteristic is around 85% capacity coming from the low-potential plateau part. The obtained high capacity cathode and anode is a very important step to further improve the energy density of NIBs. Finally, The electrochemical and safety performance of prototype Na-ion pouch cells with capacity of 1-12 Ah will be presented. The first mini-electric vehicle powered by Na-ion batteries was demonstrated in the world and their technical details will be disclosed.<br/>

New cathode and anode materials for Na-ion batteries

2019 Spring National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.