Battery chemistry
Battery chemistry
Project Description
Lithium Ion Secondary (rechargeable) cells are ever-present as power sources in today's portable electronic devices. They offer a number of significant advantages over other rechareable technologies such as Ni-Cd and Ni-MH batteries. They have higher energy density (~3 times more than Ni-Cd, ~2 times that of Ni-MH) and higher cell voltage (up to 4 V, compared to ~1.2 V for Ni-Cd and Ni-MH). They have longer shelf life, recharge rapidly and have no memory effect. Furthermore, they are relatively environmentally benign, containing no Pb, Cd or Hg.
Project Goals
We are exploring a range of fullerene/nanotube/nano-sized conductor composites with promising electronic and geometric properties to create Li-Ion battery electrodes for improved current density storage capacity, power density, decreased capacity fade and irreversible losses.
Hollow Carbon Nanosphere for Rapid Recharge Li-ion Batteries