研究期間：10207~10212;Energy production and storage have become key issues concerning our welfare in daily life; low cost batteries are required in order to reuse renewable energy. Abundant source and similarity to lithium make sodium an ideal choice for developing metal-ion batteries. By developing positive electrode materials, negative electrode materials, in-situ analysis, and theoretical simulation simultaneously, the goal of this project is to develop sodium-ion batteries with low price and high performances for practical design. Carbon and metal NaFeMxPO4 composite materials with olivine structure will be applied as positive electrode; metal sulfides (ZnS, Fe2S, SnS) with different nano structures and electrospun CuO will be used as negative electrode materials to investigate their structural changes and performances during charge-discharge process. The model will be tested using innovative experimental setups, which will serve to calibrate the model to specific sodium-ion batteries. The proposed mesoscale model will be based on a combination of a charging-discharging approach for the activation of transportation efficiency according to the chemical-reaction theory and evolution equations for internal state variables describing the electric properties. According to the experiment and simulation results, sodium-ion batteries with specific properties can be designed for different application usage.
