Metal Foam as Positive Electrode Current Collector for LiFePO4-Based Li-Ion Battery

In order to improve the kinetic performance of LiFePO4-based Li-ion batteries, three dimensional metal foams were used as positive current collector. In the case of conventional Ni foam, the organic electrolyte of the cell was decomposed with the ionization of Ni during charge and discharge. The low tolerance of Ni was solved by using NiCrAl foam which was manufactured by alloying NiCrAl powder with Ni foam. From the electrochemical analysis, it shows that the kinetic performance of the cell by using a three dimensional NiCrAl foam was much superior to that in the case of conventional foil type.