In this work, a process flowsheet is presented where a previously reported electrochemical leaching (ECL) process is followed by selective precipitation using
Removal of impurity Metals as Phosphates from Lithium-ion Battery leachates John R. Klaehn, Meng Shi, Luis A. Diaz, Daniel E. Molina, Sabrina M. Reich, Olena Palasyuk, Reyixiati Repukaiti, Tedd E. Lister
Yang Y, Zheng X, Cao H et al (2018) Selective recovery of lithium from spent lithium iron phosphate batteries: a sustainable process. Green Chem 20(13):1–13. Article Google Scholar Li L, Lu J, Zhai L et al (2018) A facile recovery process for cathodes from spent lithium iron phosphate batteries by using oxalic acid. CSEE JPES 4(2):219–225
2 天之前· After continuous optimization of all conditions, an efficient leaching of 99.5% Li was achieved, with almost all (>99%) Fe and Al impurities separated as precipitates. Lithium in the
2 天之前· After continuous optimization of all conditions, an efficient leaching of 99.5% Li was achieved, with almost all (>99%) Fe and Al impurities separated as precipitates. Lithium in the leachate was precipitated as Li2CO3 by adding Na2CO3 at 95 °C, achieving a purity of 99.2%. A magnetic separation scheme is presented to successfully separate
The resulting leachate is used to prepare battery-grade FePO4, which is then combined with Li2CO3 through a carbothermic reduction process to synthesize LiFePO4/C. The re-synthesized LiFePO4/C cathode demonstrates an initial discharge capacity of 155.1 mAh/g and retains 96.4% of its electrochemical performance after 100 cycles at a 0.2 C rate, meeting the
The lithium iron phosphate battery (LiFePO 4 battery) or LFP battery (lithium ferrophosphate) is a type of lithium-ion battery using lithium iron phosphate (LiFePO 4) as the cathode material, and a graphitic carbon electrode with a
This paper describes an efficient impurity removal route where the Cu-free LIB leachate was produced by ECL of LIBBM (Diaz et al., 2020) and then treated with DAP to
Removal of impurity Metals as Phosphates from Lithium-ion Battery leachates John R. Klaehn, Meng Shi, Luis A. Diaz, Daniel E. Molina, Sabrina M. Reich, Olena Palasyuk, Reyixiati
Different decommissioned lithium iron phosphate (LiFePO 4) battery models and various recycling technologies resulted in lithium extraction slag (LES) with multiple and complex compositions, necessitating ongoing experimentation and optimization to recover iron phosphate (FePO 4).This work proposes a one-step precise selective precipitation strategy for
High performance LiFePO 4 was synthesised by impurity removal regeneration process. The electrolysis and regeneration process makes full use of spent LiFePO 4. In this
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60 °C).
In this work, a process flowsheet is presented where a previously reported electrochemical leaching (ECL) process is followed by selective precipitation using diammonium hydrogen phosphate (DAP) to remove Cu, Al, and Fe from LIB leachate solutions. The electrochemical leach process removes Cu and produces a pH-adjusted leachate, ca
High performance LiFePO 4 was synthesised by impurity removal regeneration process. The electrolysis and regeneration process makes full use of spent LiFePO 4. In this paper, a green, efficient and low-cost process for the selective recovery of lithium from spent LiFePO 4 by anodic electrolysis is proposed.
Impurity removal with highly selective and efficient methods and the recycling of transition metals from spent lithium-ion batteries† Fangwei Peng,‡ac Deying Mu,‡ad Ruhong Li,a Yuanlong Liu,a Yuanpeng Ji,a Changsong Dai *a and Fei Ding*b The use of lithium-ion batteries (LIBs) is skyrocketing since they are widely applied in portable consumer
Our study investigated the feasibility of solvent extraction for the separation of impurities, specifically aluminum (Al), copper (Cu), and iron (Fe) from simulated leachate with similar composition to real pregnant leach solution (PLS) obtained after the bioleaching of spent lithium-ion batteries (LIBs).
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60
In this paper, a green process is developed for the recovery of spent LiFePO 4 cathode materials with a certain amount of impurities: the Li + and small part of PO 43− have been selectively leached into solution while
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60 °C). Phosphate Membranes facilitate scalable and continuous lithium concentration from hypersaline salt lakes and battery leachates.
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60 °C). Phosphate...
In this paper, a green process is developed for the recovery of spent LiFePO 4 cathode materials with a certain amount of impurities: the Li + and small part of PO 43− have been selectively leached into solution while iron and the major PO 43− as a precipitate via H 2 SO 4 selective leaching after oxidative activation at 600 °C under air atmosph...
There are several cathode chemistries available in the market, NMC is the most popular with increasing Ni content now being the trend along with lithium iron phosphate (LFP) cathode. The discarded LIBs from EVs can be reused e.g., in stationary energy storage [ 7, 8 ] but eventually need to be recycled by either pyrometallurgical, direct recycling, or
The resulting leachate is used to prepare battery-grade FePO4, which is then combined with Li2CO3 through a carbothermic reduction process to synthesize LiFePO4/C. The re-synthesized LiFePO4/C cathode demonstrates an initial discharge capacity of 155.1 mAh/g and retains 96.4% of its electrochemical performance after 100 cycles at a 0
Typical LIBs are composed of components such as an aluminum casing, cathode, anode, electrolyte, separator, and binder, as shown in Fig. 2 b The active metal materials in the cathode can be categorized into three main types based on their morphological characteristics: layered oxides (lithium cobalt oxide (LiCoO 2, LCO), and ternary materials (LiNi x Co y Mn 1−x−y O 2,
In this work, a process flowsheet is presented where a previously reported electrochemical leaching (ECL) process is followed by selective precipitation using diammonium hydrogen phosphate (DAP) to remove Cu, Al, and Fe from LIB leachate solutions.
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60 °C).
The resulting leachate is used to prepare battery-grade FePO4, which is then combined with Li2CO3 through a carbothermic reduction process to synthesize LiFePO4/C.
In this work, a process flowsheet is presented where a previously reported electrochemical leaching (ECL) process is followed by selective precipitation using
The Land system was used to investigate the rate of lithium removal from the material in relation to voltage, current and reaction time. After electrolysis, Na 2 CO 3 was added to precipitate Li in the electrolyte in the form of Li 2 CO 3. Li 2 CO 3 solid is subsequently obtained by filtration, washing and drying.
The precipitation reagent (NaOH and Na 3 PO 4) was added into leachate to remove impurities as the form of phosphate precipitation (AlPO 4, Cu 3 (PO 4) 2, FePO 4) and recover lithium as the form of Li 3 PO 4 by adjusting the pH of the solution and filtration.
Yang Y, Zheng X, Cao H et al (2018) Selective recovery of lithium from spent lithium iron phosphate batteries: a sustainable process. Green Chem 20 (13):1–13 Li L, Lu J, Zhai L et al (2018) A facile recovery process for cathodes from spent lithium iron phosphate batteries by using oxalic acid.
Electrochemical method is highly efficient and environmentally friendly, and have great potential for the recovery of spent cathode materials (Petersen et al., 2021). The extraction of lithium from spent LiFePO 4 using electrochemical methods has been reported.
The pH of the electrolyte is regulated using dilute hydrochloric acid, which is fed into the electrolyzer via a peristaltic pump. The Land system was used to investigate the rate of lithium removal from the material in relation to voltage, current and reaction time.
The recycling of spent lithium-ion batteries can alleviate the problem of tight lithium resources and also greatly reduce the pollution and damage to the environment. However, the overall recycling value of spent LiFePO 4 is low, and it is imperative to develop a low-cost, efficient and environmentally friendly recycling process.
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