Lithium (Li) is the most valuable metal in spent lithium iron phosphate (LiFePO4) batteries, but its recovery has become a challenge in electronic waste recovery because of its relatively low content and inconsistent quality. This study proposes an acid-free and selective Li extraction process to successfully achieve the isomorphic …
Learn MoreA selective leaching process is proposed to recover Li, Fe, and P from the cathode materials of spent lithium iron phosphate (LiFePO4) batteries. It was found that using stoichiometric H2SO4 at a low concentration as a leachant and H2O2 as an oxidant, Li could be selectively leached into solution while Fe and P could remain in leaching residue ...
Learn MoreA selective leaching process is proposed to recover Li, Fe, and P from the cathode materials of spent lithium iron phosphate …
Learn MoreThe environmental and economic benefits of recycling spent LiFePO4 batteries are becoming increasingly important. Nevertheless, the reprocessing of this type of material by conventional processes remains a challenge due to the difficulties of Li and Fe separation and low product purity. Herein, a new approach for recovering Li to separate …
Learn MoreSince its birth, lithium iron phosphate (LFP) has given many comforts to contemporary living and has become a significant component of lithium batteries (Lavoie et al., 2017). Additionally, because LFPBs don''t include any precious metals, their costs are substantially cheaper than those of other lithium batteries (Yang et al., 2021).
Learn MoreThe 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 (C6H8O7), 1 M oxalic (C2H2O4), 2 M sulfuric (H2SO4), 4 M hydrochloric (HCl), and 1 M nitric (HNO3) acid)) …
Learn MoreWhen serving as cathode material for lithium ion battery, the 3 h-regenerated lithium iron phosphate battery delivers an excellent electrochemical performance which shows a discharge specific ...
Learn MoreThe recycling of spent lithium iron phosphate batteries has recently become a focus topic. ... Direct data were taken from the patent, and based on this, lithium carbonate was added according to the guideline of 30% of the lithium ... Recovery of lithium, iron, and phosphorus from spent LiFePO4 batteries using stoichiometric …
Learn MoreXRD analysis of roasting at 500–700 °C (Fig. 5 b) shows that the roasting products were all lithium sodium sulphate (LiNaSO 4), iron phosphate (FePO 4), and iron oxide (Fe 2 O 3), indicating that after 500 °C, Li 3 Fe 2 (PO 4) 3 reacts with SO 3 and the resulting product Li 2 SO 4 reacts with Na 2 SO 4 to give a water-soluble lithium salt ...
Learn MoreOxidation pressure leaching was proposed to selectively dissolve Li from spent LiFePO 4 batteries in a stoichiometric sulfuric acid solution. Using O 2 as an …
Learn MoreValuable metals have been efficiently recovered from spent lithium iron phosphate batteries by employing a process involving via iron sulfate roasting, selective …
Learn MoreThe effect of sulfuric acid dosage on the leaching efficiencies of valuable components in spent LiFePO 4 /C powder was investigated (Fig. 2 a). When the H 2 SO 4 dosage was continuously increased from 60% to 120%, the leaching efficiencies of Fe, Li, and P increased from 50.1%, 49.7%, and 49.6% to 99.6%, 99.3% and 99.2%, …
Learn MoreA simplistic and novel leaching process is developed to dispose spent lithium iron phosphate (LiFePO 4 ) batteries. In this paper, oxalic acid is selected as a leaching reagent to recover lithium ...
Learn MoreLead-acid batteries rely primarily on lead and sulfuric acid to function and are one of the oldest batteries in existence. At its heart, the battery contains two types of plates: a lead dioxide (PbO2) plate, which serves as the positive plate, and a pure lead (Pb) plate, which acts as the negative plate. With the plates being submerged in an electrolyte solution …
Learn MoreExcess sulfuric acid which is needed for the leaching process of spent lithium-ion batteries is commonly neutralized generating significant waste streams. This research aims to extract and recover sulfuric acid using tri-n-octylamine as an extraction agent. 1-octanol, 2-ethylhexanol, and tributyl phosphate are investigated as synergetic ...
Learn MoreLithium is expelled out of the Oliver crystal structure of lithium iron phosphate due to oxidation of Fe2+ into Fe3+ by ammonium persulfate. 99% of lithium is therefore leached at 40 °C with only ...
Learn MoreRecycling graphite from spent lithium-ion batteries plays a significant role in relieving the shortage of graphite resources and environmental protection. In this study, a novel method was proposed to regenerate spent graphite (SG) via a combined sulfuric acid curing, leaching, and calcination process. First, we conducted a sulfuric acid …
Learn More1. Introduction. New energy vehicles are a national strategic emerging industry, and power batteries are its core components, among which lithium iron phosphates (LFP) batteries are widely used in new energy vehicles, portable devices and energy storage due to their high thermal stability, long cycle life and low cost [1], [2] …
Learn MoreTherefore, the preparation of the precursor of lithium iron phosphate from titanium dioxide waste acid is a good choice for both the raw material of lithium iron phosphate and the comprehensive ...
Learn MoreHigh-efficiency and selective leaching of lithium ions from spent lithium iron phosphate (LiFePO 4) batteries is currently an urgent problem to be solved.Hydrochloric acid and sodium hypochlorite were used as acidic media and oxidant for recycling LiFePO 4 powders based on the stoichiometric ratio. The effect of operation …
Learn MoreA selective leaching process is proposed to recover Li, Fe, and P from the cathode materials of spent lithium iron phosphate (LiFePO4) batteries. It was found that using stoichiometric H2SO4 at a low concentration as a leachant and H2O2 as an oxidant, Li could be selectively leached into solution while Fe and P could remain in leaching residue …
Learn MoreDue to the increasing demand of lithium iron phosphate battery, a recycling process is developed for the recovery of ... (v/v) concentration of hydrogen peroxide, 20%(v/v) concentration of sulfuric acid and 3g LFP in 100ml acid. It is showed that the leaching rate of lithium and iron was 96% and 5%, respectively, with leaching selectivity as ...
Learn MorePrior to 2016, China''s main new-energy vehicle batteries were dominated by lithium iron phosphate batteries, but since then, ternary LIBs have gradually come to account for the major portion (Sina, 2019). Therefore, in China, LIBs are dominated by ternary batteries (R.A. MARKETS, 2020a).
Learn MoreRecycling cathodic materials from spent lithium-ion batteries (LIBs) is crucial not just for the environmental aspects but also for the supply of precious raw materials such as cobalt and lithium. As a result, developing a leaching process with low acid consumption, cost-effectiveness, low environmental impact, and high metal recovery …
Learn MoreIn this study, a novel strategy for selective recovery of lithium from spent LiMn 2 O 4 batteries was proposed without using corrosive agents and no emission of toxic gases. The whole process used waste copperas as additive, which is a solid waste generated during the manufacture of TiO 2 with the main component of FeSO 4 ·7 H 2 O …
Learn MoreDue to their high safety standards, high energy density, no memory effect, and lower environmental impact of mining the raw materials, lithium iron phosphate (LFP) batteries have been widely used for electric vehicles and energy storage [1,2,3,4,5,6].However, with the large-scale application of LEP batteries, there has been …
Learn MoreRecycling graphite from spent lithium-ion batteries plays a significant role in relieving the shortage of graphite resources and environmental protection. In this study, a novel method was proposed to …
Learn MoreA selective leaching process is proposed to recover Li, Fe, and P from the cathode materials of spent lithium iron phosphate (LiFePO4) batteries. It was found that using stoichiometric H2SO4 at a low concentration as a leachant and H2O2 as an oxidant, Li could be selectively leached into solution while Fe and P could remain in leaching residue ...
Learn Morethe most valuable element lithium can be released into aqueous solution, which can be easily separated from insoluble residues. In this article, we use sodium persulphate (Na 2 …
Learn MoreWith the increasing use of electric vehicles, the demand for lithium iron phosphate (LiFePO4) batteries has sharply increased. Hence, the recycling of metals from these batteries after end-of-life ...
Learn MoreThis concise and efficient acid-free mechanochemical process for Li extraction is a promising candidate for feasible recycling technology of Li from spent LiFePO 4 batteries. The proposed process is …
Learn MoreRecovery of Lithium, Iron, and Phosphorus from Spent LiFePO 4 Batteries Using Stoichiometric Sulfuric Acid Leaching System ... Fe, and P from the cathode materials of spent lithium iron phosphate (LiFePO 4 ) batteries. It was found that using stoichiometric H 2 SO 4 at a low concentration as a leachant and H 2 O 2 as an oxidant, Li could be ...
Learn MoreKeywords Lithium iron phosphate battery · Iron sulfate roasting · Selective leaching · Iron sulfate · Lithium carbonate ... precipitation were dissolved in 3 mol/L sulfuric acid. Then, a certain amount of phosphoric acid was added to control the ratio of phosphorus to iron in the solution, and
Learn MoreKeywords: selective leaching; oxalic acid; sulfuric acid; spent lithium-ion batteries 1. Introduction Lithium-ion batteries (LIBs) are commonly used as new energy power batteries due to their long cycle life, high spe-cific energy, low self-discharge rate, compact size, high oper-ating voltage, no memory effect, wide temperature range, and
Learn MoreIntroduction. In the early 1990s, Moli and Sony used carbon materials with graphite structure to replace metal lithium anodes, and lithium and transition metal composite oxide such as LiCoO 2 served as the cathodes, leading to the commercialization of LIBs (Arora et al., 1998; Song et al., 1999; Lee and Lee, 2000; Pattipati et al., …
Learn MoreThe latter will selectively dissolve lithium in a low sulfuric acid concentration solution by oxidizing the iron during the solid–liquid reaction, then the Li precipitates as Li 2 CO 3 and the leaching residue of iron phosphate is decarburized by calcination (Li et al., 2019b, Zhou et al., 2020).
Learn MoreThe recycling of lithium and iron from spent lithium iron phosphate (LiFePO<sub>4</sub>) batteries has gained attention due to the explosive growth of the electric vehicle market. To recover both of these metal ions from the sulfuric acid leaching solution of spent LiFePO<sub>4</sub> batteries, a process based on precipitation was …
Learn MoreIn this study, a roasting-water leaching green process for highly selective lithium extraction from the cathode material of spent lithium iron phosphate (LiFePO4) battery was proposed. Using spent LiFePO4 as raw material and sodium bisulfate (NaHSO4) as an additive, the best roasting parameters were determined as follows: …
Learn MoreAbstract: The recycling of lithium and iron from spent lithium iron phosphate (LiFePO 4) batteries has gained attention due to the explosive growth of the electric vehicle market. …
Learn MoreThe precipitation reagent (NaOH and Na 3 PO 4) was added into leachate to remove impurities as the form of phosphate …
Learn MoreAdvances in bioleaching of waste lithium batteries under ...
Learn More1. Introduction. Lithium-ion batteries (LIBs) have emerged as an innovative solution for renewable energy storage, effectively mitigating persistent energy crises and environmental pollution [[2], [1]].Their extensive integration across diverse sectors has propelled the global market demand for LIBs [3], [4].The surging demand for lithium …
Learn MoreTraditional hydrometallurgical methods for recovering spent lithium-ion batteries (LIBs) involve acid leaching to simultaneously extract all valuable metals into the leachate. These methods usually are followed by a series of separation steps such as precipitation, extraction, and stripping to separate the individual valuable metals. In this …
Learn MoreSince the total amount of sulfuric acid in the solution and the Ksp of FePO 4 at a certain temperature is constant, the leaching efficiency of lithium and iron tends to be stable when the sulfuric acid reaches a certain concentration. The leaching efficiency of Li reached 99.18% and that of Fe decreased as low as 0.047% when the reaction ...
Learn MoreFormic acid (HCOOH) has been used as a leaching reagent for the treatment of spent lithium-ion batteries by various researchers (Gao et al., 2017; Zheng et al., 2018).The lixiviant, formic acid reacts with spent LFP cathode powder and was varied from 0.25 to 1.50 mol/L to observe its influence on the selective leaching of lithium (Fig. …
Learn MoreContact Us