Magnetic Field Assisted High Capacity Li Ion Batteries Project at IIT Madras

Magnetic field assisted high-capacity durable anode and cathode materials for Li-ion battery

Objective

• One of the most important technologies to reduce pollution is Lithium-ion battery due to no hazardous emission. But the main drawback is the fading of the battery after few cycles and tedious recycling of the battery afterwards. Presently, most of the electric vehicles are powered by LIBs. But recycling is needed for the batteries with fading. So, a new method which can increase the cyclic stability of battery without opening the cell would be useful. The current project aims to the development of the following: Development of nonmagnetic cathode and magnetic anode material for LIB operation under the influence of magnetic field & development of magnetic cathode material with nonmagnetic anode for magnetic field assisted LIB such that the capacity can be revived in presence of magnetic field for faded cells and cycle life can be increased from 500 to higher than 2000 cycles with a minimum of 90% capacity retention.

Description

• The current project aims at: Milestone I (12 months): Development of magnetic anode material for the enhancement in specific capacity when compared to graphite, Recovery of used battery to its normal capacity and to improve the cycle life of the battery with a technique developed. Development of nonmagnetic cathode material that can be coupled with magnetic anode material, Coupling of anode with cathode for the development of full cell lithium-ion battery cell and testing in presence and absence of magnetic field, Milestone II (12 months): A capacity revival in presence of magnetic field for faded cells and cycle life from 500 to higher than 2000 cycles will be targeted with a minimum of 90% capacity retention. Application of this technology to magnetic material-based cathode/modified magnetic cathode with nonmagnetic graphite anode with a scale up process for the same.

Impact

• A technique with the electrode materials for the increase in the cyclic stability of Li ion battery without opening the cell by use of magnetic field assisted magnetic anode/cathode.