LiNi0.8Co0.15Al0.05O2 (NCA) is the most popular cathode material used for lithium-ion batteries. NCA batteries have some features of high capacity and high density but have a certain life-cycle so in the end, it becomes spent NCA batteries. Spent NCA batteries contain dangerous heavy metals for the environment, but it also valuable. In this study, valuable metals from spent NCA battery that is nickel and cobalt were recovered using mixed phosphoric acid and citric acid as a leaching agent and also as a reductant agent. The effects of various temperatures and concentrations of mixed acid were investigated to reach the optimum condition on the process of leaching nickel and cobalt. Spent NCA cathode was being dissolved by aqua-regia to determine the content of metals that could be leached. In the leaching process, the metals were leached in acid solution, and the concentration of metals ion in leachate was determined by Atomic Absorption Spectrophotometry (AAS). The leaching efficiencies of both nickel and cobalt reached about 99.6% of nickel and 93.4% of cobalt at the optimum leaching condition of 0.5 M phosphoric acid and 1.5 M citric acid with ratio solid to liquid (S/L) 30 g/L at 90°C for 60 minutes.
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24 March 2022
INTERNATIONAL CONFERENCE ON SCIENCE AND APPLIED SCIENCE (ICSAS) 2021
6 April 2021
Surakarta, Indonesia
Research Article|
March 24 2022
Recovery nickel and cobalt from spent LiNi0.8Co0.15Al0.05O2 cathode with mixed acid as leaching agent
Arif Jumari;
Arif Jumari
a)
Department of Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret
, Jl. Ir. Sutami 36 A, Surakarta, Central Java 57126, Indonesia
a)Corresponding author: [email protected];
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Luthfiatul Azizah Aini;
Luthfiatul Azizah Aini
b)
Department of Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret
, Jl. Ir. Sutami 36 A, Surakarta, Central Java 57126, Indonesia
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Farida Saptiani;
Farida Saptiani
c)
Department of Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret
, Jl. Ir. Sutami 36 A, Surakarta, Central Java 57126, Indonesia
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Endah Retno Dyartanti;
Endah Retno Dyartanti
d)
Department of Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret
, Jl. Ir. Sutami 36 A, Surakarta, Central Java 57126, Indonesia
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Agus Purwanto
Agus Purwanto
e)
Department of Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret
, Jl. Ir. Sutami 36 A, Surakarta, Central Java 57126, Indonesia
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a)Corresponding author: [email protected];
AIP Conf. Proc. 2391, 040002 (2022)
Citation
Arif Jumari, Luthfiatul Azizah Aini, Farida Saptiani, Endah Retno Dyartanti, Agus Purwanto; Recovery nickel and cobalt from spent LiNi0.8Co0.15Al0.05O2 cathode with mixed acid as leaching agent. AIP Conf. Proc. 24 March 2022; 2391 (1): 040002. https://doi.org/10.1063/5.0072404
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