Clean Technology 2007
P. Bhattacharya, Z. Ye, E. Walker, F. Lacy and M. Banerjee
Southern University, US
nanobattery, miniaturization, modeling, identification
Nanobattary microstructure consists of anode, cathode, electrolyte, separator for miniaturized power source. Miniaturization is a challenging area of research. Miniature power sources have a variety of applications on miniature power-controlled devices. Li-Ion is selected by comparing its properties with other rechargeable batteries and simulation model is proposed for Li-Ion nanobattery. In a miniaturized battery, the anode is a multi-walled carbon nanotube array electrode which exhibits high current density due to its high surface area and ordered electrode configuration. The cathode is selected as LiMn2O4 spinel oxide. Nanoporous dielectric membranes made from anodically oxidized aluminum foil are used for storing mixture of gel electrolyte. Ni is used as a suitable current collector for the proposed battery. The separator and electrolyte container is justified to reduce formation of dendrites and to increase electrode-electrolyte compatibility. Mathematical model is then identified to represent battery mechanism. The simulation of performance characteristics has been carried out based on the identified model. Simulation results are analyzed and inferences have been made on behavior of the simulated nanobattery. Most simulations are conducted for comparison with the properties of the simulated nanobattery. The scaling law is used to scale down all input parameters to nanolevel.