5V Lithiated Nanospinel Electrodes for Asymmetric Super Capacitors: Investigations of Particle Size and Porosity on the Device Performance

摘要

In this work, lithiated nanospinels such as Li_4Ti_5O_(12) (3V), Li_2NiTiO_4 (5V), and LiCrTiO4 (5V) along with LiMn_(1-x)Ti_(x/2)Mg_(x/2)O_2, and LiMn_(1-x)Ti_(x/2)Al_(x/2)O_2 (x = 0.05)) were synthesized, and used them as electrodes for NAS. The performance characteristics of the NAS devices designed with 5V systems were compared with the commercially popular 3V Li_4Ti_5O_(12) for non aqueous asymmetric supercapacitors (NAS). The electrochemical performance of 5V electrode materials used in the fabrication of hybrid supercapcitors depends upon the particle size and porosity.