Discarded cell phone lithium ion batteries state of health quick method analysis by galvanostatic intermittent titration technique (GITT) concept

Abstract

The state of health (SOH) is a important evaluation parameter to rechargeable batteries, because determine its cycle life and help on electric devices supplied by batteries maintenance. In this work the lithium ion discards cell phones batteries state of health and apparent diffusion coefficient (Dap) were measured and correlated which purpose is diminish the batteries analyze time. The apparent diffusion coefficient is a ionic diffusion coefficient modification from GITT technique. The SOH and Dap correlation is well behaved, disclosing a cubic dependency. The time analyze was reduced by more than 1 h.

Keywords

• Cell phone lithium ion battery
• State of health (SOH)
• GITT
• Diffusion coefficient