Li İyon Pil Katot Nitrik Asitte Çözünme Koşullarının Belirlenmesi

Year 2023, Volume: 6 Issue: 1, 900 - 907, 10.03.2023

Selçuk Yeşiltepe

https://doi.org/10.47495/okufbed.1074511

Abstract

Bu çalışmada atık lityum-iyon pil katot malzemesinin nitrik asit çözeltisinde çözülerek metalik malzemeler ile grafitin geri kazanım koşulları belirlenmiştir. Yapılan çalışmada atık Li-iyon katot malzemesi farklı molaritelere sahip nitrik asit çözeltisinde liç edilmiş ve metallerin çözünme verimi araştırılmıştır. Çözünme verimini etkileyen katı-sıvı oranı, çözünme süresi, H2O2 katkısı parametrelerinin çözünme verimi üzerindeki etkisi incelenmiştir. Yapılan incelemeler sonucunda en uygun çözme koşullarının 2 saat liç süresi, 100 g/L katı-sıvı oranı ve 3M nitrik asit çözeltisi olduğu tespit edilmiştir. H2O2 katkısının incelendiği 2M nitrik asit çözeltisinde H2O2 katkısının olumlu etkisinin olmasına karşılık yeterli çözünme verimine ulaşılamadığı görülmüştür.

Keywords

Geri dönüşüm, Li-iyon pil, Atık pil, Liç

Thanks

Yazar bu çalışmada kullanılan pil tozunu sağlayan Exitcom firması ve Murat Ilgar’a, çalışmanın yapılmasında desteklerinden dolayı Doç. Dr. Murat Farsak ve Dr. Öğr. Üyesi Özkan Aydın’a, analizler konusunda yardımlarından dolayı Öğr. Gör. Berna Farsak’a ve OKÜMERLAB çalışanlarına teşekkür eder.

Evaluation of Dissolution Conditions of Li-Ion Battery Cathode Material in Nitric Acid

Abstract

In this study, recycling conditions of metallic materials and graphite from waste Li-ion cathodes are evaluated by using nitric acid solution. Li-ion cathode material is leached in nitric acid solution and leaching efficiency is studied in the present study. Parameters that affect the leaching efficiency, solid-liquid ratio, leaching time, H2O2 addition are investigated by relationship with leaching efficiency. Investigations show that optimal leaching conditions are 2 hours leaching time, 100 g/L solid-liquid ratio and 3M nitric acid solution. In 2M nitric acid solution addition of H2O2 is found to increase the efficiency however a satisfying leaching efficiency could not be reached.

Keywords

Recycling, Li-ion battery, Waste battery, Leaching

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