Sodium-ion battery is a low-cost energy storage device, which is similar in some ways to lithium-ion batteries. In both systems, Na/Li ions are shuttled between the battery’s positive and negative electrodes during charging and discharging. Taking into account recent concerns about a possible lithium shortage with the spread of electric vehicles, it is urgent to search for alternative energy storage systems that could complement the existing Li-ion technology. For this purpose, Na-ion technology can be a suitable choice in terms of battery cost,safety, and raw material abundance. Due to the increased size and heavier weight of the Na atom compared to the Li atom, the volumetric energy density and specific energy density obtainable for the sodium-ion battery would be less than those obtainable with the lithium-ion battery. However, Na-ion batteries would be interesting for very low-cost systems for grid storage, which could make renewable energy a primary source of energy rather than just a supplementalone. Here, we will present our work on both anode and cathode materials for sodium-ion battery. The anode materials include carbon-based materials,Sn-based materials and red phosphorous based composites with high specific capacity and excellent capacity retention. Cathode materials will focus on thelow-cost Prussian blue materials.

Dr.ShuleiChou is the senior research fellow of the University of Wollongong. Hisresearchis focusing on energy storage systems such as Li-ion batteries,supercapacitors, metal air batteries, and sodium ionbatteries.Hehavepublished more than 130 international journal papers with more than half of papers as first author or corresponding author including Science, Nature Communications, Advanced Materials, Nano Letters, more than 5000 citations andan H-index factor of 35. Research awards include Scopus-Young Researcher of theyear 2014, APD fellowship and VC awards. Currently,he is supervising12 PhD students in addition to 10graduated PhD and master students。