Tehnika (Jan 2018)
The electrochemical behaviour of re-synthesized cathode material from spent Li-ion batteries in an organic electrolyte
Abstract
The excessive use of Li-ion batteries has resulted in the growing necessity of developing a recycling procedure for them, particularly stemming from their negative impact on the environment as well as the fact that the natural-ore metals contained in them can be replaced. This work presents a re-synthesis of cathode material obtained from spent Li-ion batteries using the co-precipitation method in order to recycle it. The structure of the re-synthesized metal was characterized by XRD and the morphology by SEM. The chemical content of the spent cathode material was determined by FAAS. In order to prove functionality, the electrochemical behaviour was examined in a 1M solution of LiClO4 in propylene carbonate by galvanostatic charging and discharging. Since the initial capacity of the re-synthesized material was 70.6 mAh g-1 when the current of charging/discharging was 100 mA g-1, the fade of capacity was 13% after the initial five cycles. The electrochemical properties of the re-synthesized material were then finally compared to the material re-synthesized by the citrate gel combustion method.
