Nanowire Battery Research Paper Example | Topics and Well Written Essays - 1250 words

Nanowire barrage - Research Paper ExampleThe basic electrodes in a lithium ion barrage ar limited by nanotechnology to improve the performance. This article intends to discuss the objectives of the nanowire shelling technology. The basic features and the technology behind these batteries are discussed along with their advantages. Finally, the challenges and applications of Nano wire batteries are presented. Introduction The speed of operation of the present generation computers, other electronic gadgets and even galvanising cars are increasing at an exponential rate. This presents a demand for equivalent high mental ability batteries to power them with high charging and discharging rate. The batteries that power the high speed devices like laptops, mobile phones, video games and even electric cars lack these characteristics imputable to chemical constraints. The traditional Lithium-ion batteries transfer lithium ions from carbon anode to a metal oxide cathode. As the number of l ithium ion held by one carbon ion is only one, the charge density in these batteries is low. On the other hand, the ti anode has the capability to hold 4.4 lithium ions in one silicon atom. Scientists at the Stanford university (Chan. C.K. , Zhang. X. F. & Cui Y. , 2008) flip explored the use of Silicon and Germanium nanowires for improved battery energy. This article intends to explore the technological insights of this Nano Wire battery technology. Objectives The existing rechargeable batteries are limited in electrical charge density as wellspring as lifetime. The popular Lithium ion batteries used in portable electronic gadgets and cars have lithiated graphite as anode, LiPF6 as the electrolyte and the LiCoO2 as cathode. Their major disadvantages are high production cost and lack of resources like Co for mass production. The new Nano wire battery technology, aims at eliminating the drawbacks in this Lithium ion batteries. The major objectives of this technology are to use cat hodes and anodes with materials of higher energy density and to optimize the send off of the batteries for higher performance. Features and Advantages The anodes used in nanowire battery were made of Silicon and Germanium nanowires (chan et al. , 2008 ). Since Silicon has low discharge potential and charge capacity of 4200 mAh/g, it is much than preferred than Germanium which has a theoretical charge capacity of 1600 mAh/g. The following Figure. 1. shows the nanowires of Silicon grown on the electrodes. Figure. 1. Silicon Nano wires grown on the electrodes. The potential advantages of the Nano Wire design are high surface to ledger ratio which enables more electrode contact with the electrolyte, they provide continuous conduction of electrons within the electrode and finally, due to the fibrous design they are good in facile strain relaxation. These anodes of Silicon nanowire have ten times more storage capacity compared to the existing carbon anodes. The most critical parameter for the safe operation of a battery is the Solid Electrode - Interface (SEI). In nanowire batteries, the SEI formation is more when there is Lithium insertion into Silicon layers. The SEI in Silicon nanowire batteries has an inner layer of in ingrained lithium compound and an outer layer of organic lithium compound. Also the voltage dependence of the SEI morphology, allows more cycles of charging and discharging. The analysis of the impedance level of these batteries shows that the impedance is due to both the process of diffusion and the