A facile approach for the selective recovery of lithium from spent lithium-ion batteries

Journal of Materials Research and Technology

Cornelius Satria Yudha¹  Suranto²  Endah Retno Dyartanti³  Muhammad Nizam⁴  Agus Purwanto⁵  Arif Jumari⁵ 

[1] Centre of Excellence for Electrical Energy Storage Technology, Universitas Sebelas Maret, Jl. Slamet Riyadi 435, Surakarta, Central Java 57146, Indonesia;Department of Chemical Engineering, UNS Vocational School, Universitas Sebelas Maret, Jl. Kolonel Sutarto 150K, Surakarta, Central Java 57126, Indonesia;Environmental Science, Postgraduate Faculty, Universitas Sebelas Maret, Jl. Ir. Sutami No. 36A, Surakarta, Central Java 57126, Indonesia;Centre of Excellence for Electrical Energy Storage Technology, Universitas Sebelas Maret, Jl. Slamet Riyadi 435, Surakarta, Central Java 57146, Indonesia;Department of Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Surakarta, Central Java 57126, Indonesia;

关键词: Spent Li-ion batteries;    Reduction;    Selective leaching;    Leaching efficiency;    Lithium carbonate;    Regenerated cathode;   

DOI  :  

来源: DOAJ

【 摘 要 】

The excessive use of lithium-ion batteries (LIBs) poses a potential severe environmental problem. Spent LIBs are prospective lithium (Li) sources. This study aims to recover Li from LIBs and regenerate cathode from the recovered and residual Li. The spent cathode was mixed with a spent anode and heated at a given temperature and time for its reduction. The reduced cathode was leached using carbonated water and was analyzed before and after its leaching. The leachate was examined to determine the Li content, and it was evaporated to obtain solid high purity Li2CO3. At a 6% solid/liquid (S/L) ratio and a 2-L/min CO2 flowrate, the leaching efficiency was 94%, which decreased as the S/L ratio increased. The Li2CO3 purity was close to that of pure Li2CO3 and superior to that of commercial Li2CO3. Regenerated lithium nickel–cobalt–aluminum oxide (RNCA) cathode material was obtained via a reaction of Li2CO3 and the leaching residue. RNCA achieved a discharge capacity of 128 mA h/g at 0.1C (102 mA h/g at 1C) and 79% capacity retention after 50 cycles at 1C. The discharge capacities of a commercial NCA cathode and spent cathode were 133 mA h/g at 0.1C (115 mA h/g at 1C) with 82.6% capacity retention after 50 cycles at 1C and 38 mA h/g at 0.1C with 52% capacity retention after 50 cycles at 0.1C, respectively. The obtained Li2CO3 met the requirements of LIB cathode manufacturing, and the spent NCA cathode could be regenerated to form cathode materials with good characteristics via a simple technique.

【 授权许可】

Unknown