Comparision of Different Reductants in Leaching of Spent Lithium Ion Batteries

Meshram, Pratima; Abhilash, .; Pandey, B.D.; Mankhand, T R; Deveci, Hacı

doi:10.1007/s11837-016-2032-9

Cited by 108 publications

(52 citation statements)

References 16 publications

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“…Although there has been a large body of research related to the recycling of LIB wastes by pyrometallurgical and hydrometallurgical methods, a majority have only focused on the recovery of Li, Co, and Ni, whereas Mn retrieval has been less well studied. [4][5][6][7] Moreover, there are currently almost no major recycling technologies available for the recovery of Mn from industrial LIB waste as it is usually composed of both active materials (e.g., NMC) as well as impurities like Al, Fe and Cu. 8 As a result, battery wastes with these types of compositions are distinctly different from other Mn-bearing resources like Mn oxide minerals, 9 alkaline Zn-Mn battery waste 10 and deepsea cores 11 when used as a secondary raw material.…”

Section: Introductionmentioning

confidence: 99%

Recovery of High-Purity MnO2 from the Acid Leaching Solution of Spent Li-Ion Batteries

Peng

Chang

Wang

et al. 2019

JOM

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Hydrometallurgical recycling processes for spent Li-ion batteries (LIBs) often produce pregnant leach solutions (PLS) that contain metals like Co, Ni, Mn, Li, Al, etc. Although significant research has focused on the recovery of the most valuable materials (e.g., Co, Ni, Li), the reclamation of Mn from PLS is often neglected. In this study, recovery of Mn via a multi-step process based on solvent extraction with di-2-ethylhexyl phosphoric acid, scrubbing, stripping and oxidative Mn precipitation has been undertaken. The results demonstrate that more than 99% of Mn can be successfully recovered as a high-purity MnO 2 product (purity > 99.5%) with almost no loss of Co, Ni and Li. In addition, the behavior of other metal elements present in the PLS were also studied in detail. Overall, this study investigates the fundamentals of Mn recovery from the complicated PLS of LIBs waste and outlines industrial process feasibility based on known unit process steps.

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Section: Introductionmentioning

confidence: 99%

Recovery of High-Purity MnO2 from the Acid Leaching Solution of Spent Li-Ion Batteries

Peng

Chang

Wang

et al. 2019

JOM

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“…Leaching is a main step in the hydrometallurgical process whereby acids are used to dissolve the valuable metals into solution. Various inorganic acids such as HCl, H 2 SO 4 , and HNO 3 [21][22][23][24] and organic acids such as citric acids, malic acids, oxalic acids, etc. [25][26][27][28] are usually used as the leaching agent (leachant) to leach out the valuable metals contained in the material.…”

Section: Introductionmentioning

confidence: 99%

A Fast Metals Recovery Method for the Synthesis of Lithium Nickel Cobalt Aluminum Oxide Material from Cathode Waste

Muzayanha

Yudha

Nur

et al. 2019

Metals

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An approach for a fast recycling process for Lithium Nickel Cobalt Aluminum Oxide (NCA) cathode scrap material without the presence of a reducing agent was proposed. The combination of metal leaching using strong acids (HCl, H2SO4, HNO3) and mixed metal hydroxide co-precipitation followed by heat treatment was investigated to resynthesize NCA. The most efficient leaching with a high solid loading rate (100 g/L) was obtained using HCl, resulting in Ni, Co, and Al leaching efficiencies of 99.8%, 95.6%, and 99.5%, respectively. The recycled NCA (RNCA) was successfully synthesized and in good agreement with JCPDS Card #87-1562. The highly crystalline RNCA presents the highest specific discharge capacity of a full cell (RNCA vs. Graphite) of 124.2 mAh/g with capacity retention of 96% after 40 cycles. This result is comparable with commercial NCA. Overall, this approach is faster than that in the previous study, resulting in more efficient and facile treatment of the recycling process for NCA waste and providing 35 times faster processing.

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“…In addition, the effect of different reducing agents in leaching, for instance, hydrogen peroxide (H 2 O 2 ) [15], sodium thiosulfate (Na 2 S 2 O 3 ) [16], sodium bisulfite (NaHSO 3 ) [17], and some carbohydrates, including D-glucose [18] and ascorbic acid [19], which are added to accelerate the leaching process of metal ions, has been explored. The decomposition i.e., dissolution of LiCoO 2 is a reduction reaction in nature, as opposed to, e.g., metallic copper dissolution, and thus requires the addition of a reduction agent.…”

Section: Introductionmentioning

confidence: 99%

Leaching of Metals from Spent Lithium-Ion Batteries

et al. 2017

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Abstract:The recycling of valuable metals from spent lithium-ion batteries (LIBs) is becoming increasingly important due to the depletion of natural resources and potential pollution from the spent batteries. In this work, different types of acids (2 M citric (C 6 H 8 O 7 ), 1 M oxalic (C 2 H 2 O 4 ), 2 M sulfuric (H 2 SO 4 ), 4 M hydrochloric (HCl), and 1 M nitric (HNO 3 ) acid)) and reducing agents (hydrogen peroxide (H 2 O 2 ), glucose (C 6 H 12 O 6 ) and ascorbic acid (C 6 H 8 O 6 )) were selected for investigating the recovery of valuable metals from waste LIBs. The crushed and sieved material contained on average 23% (w/w) cobalt, 3% (w/w) lithium, and 1-5% (w/w) nickel, copper, manganese, aluminum, and iron. Results indicated that mineral acids (4 M HCl and 2 M H 2 SO 4 with 1% (v/v) H 2 O 2 ) produced generally higher yields compared with organic acids, with a nearly complete dissolution of lithium, cobalt, and nickel at 25 • C with a slurry density of 5% (w/v). Further leaching experiments carried out with H 2 SO 4 media and different reducing agents with a slurry density of 10% (w/v) show that nearly all of the cobalt and lithium can be leached out in sulfuric acid (2 M) when using C 6 H 8 O 6 as a reducing agent (10% g/g scraps ) at 80 • C.

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Comparision of Different Reductants in Leaching of Spent Lithium Ion Batteries

Cited by 108 publications

References 16 publications

Recovery of High-Purity MnO2 from the Acid Leaching Solution of Spent Li-Ion Batteries

Recovery of High-Purity MnO2 from the Acid Leaching Solution of Spent Li-Ion Batteries

A Fast Metals Recovery Method for the Synthesis of Lithium Nickel Cobalt Aluminum Oxide Material from Cathode Waste

Leaching of Metals from Spent Lithium-Ion Batteries

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