Preparation of FePO4 and LiH2PO4 from cathode mixture materials of scrapped LiFePO4 batteries

Chen, Yongzhi; Wang, Lihua; He, Hao; Li, Jian; Li, Yimin; Liu, Rutie; Li, Dongyang; He, Zheyu

doi:10.1007/s10854-020-02955-1

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…12 LFP. 13 Our previous work verified the effectiveness of organic acid leaching for the extraction of lithium ions from LFP. 14 However, the complicated processes and effluent disposal pose obstacles to reducing the operating costs of hydrometallurgybased procedures.…”

Section: ■ Introductionsupporting

confidence: 64%

“…proposed an approach to recover LiFePO 4 with a similar strategy based on organic acids, and the leaching rate of Li, Cu, and Al can reach 94.83, 96.92, and 47.24%, respectively . Chen et al realized the efficient leaching of lithium (99.20%) by carbothermic reduction of LFP . Our previous work verified the effectiveness of organic acid leaching for the extraction of lithium ions from LFP .…”

Section: Introductionsupporting

confidence: 55%

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Directional High-Value Regeneration of Lithium, Iron, and Phosphorus from Spent Lithium Iron Phosphate Batteries

Zhang

Zou

et al. 2022

ACS Sustainable Chem. Eng.

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As lithium-ion batteries (LIBs) are undergoing unprecedented development in electric vehicles (EVs) and renewable grids, recycling spent battery disposal is becoming the dominating issue considering the urgent demand for sustainable resources and eco-friendly development. However, existing recovery methods for spent LIBs still suffer from complex processes and low processing efficiency. Herein, an effective pyroprocessing-based strategy was proposed to recycle spent lithium iron phosphate (LFP) materials, featuring full element regeneration and conversion of high-value products. Specifically, over 99% Li was extracted and converted into high purity lithium carbonate (>99%), while Fe and P were further converted into value-added Fe2P2O7 and Na4P2O7, respectively. Due to the benefits of high efficiency of metal extraction and the reuse of all valuable elements, the pyroprocessing-based strategy potentially generates the profit of 1.44 $ kg–1 of LFP batteries, over three times more than that of the conventional hydrometallurgical process, while the discharges of wastewater and residue are reduced by 66.3 and 93.9%, respectively. This study provides a new pyroprocessing-based approach to the green recovery of all elements of LFP materials in spent LFP batteries.

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Section: ■ Introductionsupporting

confidence: 64%

Section: Introductionsupporting

confidence: 55%

Directional High-Value Regeneration of Lithium, Iron, and Phosphorus from Spent Lithium Iron Phosphate Batteries

Zhang

Zou

et al. 2022

ACS Sustainable Chem. Eng.

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“…Representatively, the high-resolution transmission electron microscopy (HR-TEM) of the fresh FeCuPO x showed nanoparticles in Figure a–d. The clean lattice fringes of 2.901, 2.977, and 2.955 Å were exhibited in the HR-TEM pattern (Figure d), which attributed to (0–22), (210), and (2–21) of Fe 4 Cu 3 (PO 4 ) 6 , respectively. , Besides, lattice fringe with an interplanar distance of 4.666 Å can be attributed to the existence of P 4 O 7 . The high-angle annular dark-field (HAADF) image indicated that the FeCu nanoparticles were anchored at PO x surrounding, and POx layer-modified FeCu-nanoparticles were evenly distributed in the PO x frame (Figure e–h).…”

Section: Resultsmentioning

confidence: 92%

“…28,29 Besides, lattice fringe with an interplanar distance of 4.666 Å can be attributed to the existence of P 4 O 7 . 30 The high-angle annular dark-field (HAADF) image indicated that the FeCu nanoparticles were anchored at PO x surrounding, 31 and POx layer-modified FeCunanoparticles were evenly distributed in the PO x frame (Figure 1e−h). ICP-determined amounts of Fe and Cu in FeCuPO x were 18.65 and 21.36, respectively, which were higher than the SEM−energy-dispersive spectrometry results (Table S5, entry 2), indicating that FeCu-nanoparticles were embedded in the PO x frame.…”

Section: Catalyst Screening and Condition Optimizationmentioning

confidence: 99%

Boosting the Acid Sites and Lattice Oxygen Activity of the Fe–Cu Catalyst for One-Pot Producing 2,5-Diformylfuran from Fructose

Jia

Zhang

Zuo

et al. 2021

ACS Sustainable Chem. Eng.

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In this work, we developed a novel binary phosphate catalyst FeCuPO x for the one-pot synthesis of 2,5-diformylfuran (DFF) from fructose. Under typical reaction conditions, 95% yield of DFF was achieved with a high TOF of 818 h −1 . The experiment results and catalyst characterization together indicated that both the Brønsted−Lewis acid sites (B−L) and the Fe−Cu active sites contributed to the high synthetic activity of the catalysts. The effect of acid site demonstrated that the Brønsted acid sites facilitated the conversion of fructose to 5-hydroxymethylfurfural (HMF), and the Lewis acid sites promoted the adsorption of the hydroxyl group over the catalytic active centers for further efficient oxidation of HMF to DFF. In the oxidation process, a higher lattice oxygen ratio and better mobility endowed FeCuPO x with better catalytic performance in the oxidation of HMF to DFF with the redox cycle of Fe 3+ /Fe 2+ , improved by the redox cycle of Cu 2+ /Cu + . Moreover, the catalyst exhibited satisfying stability and recyclability, demonstrating great potential for the industrial production of DFF from fructose.

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Regenerated LiFePO4/C for scrapped lithium iron phosphate powder batteries by pre-oxidation and reduction method

Zhang

Wang

Chen

et al. 2022

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Preparation of FePO4 and LiH2PO4 from cathode mixture materials of scrapped LiFePO4 batteries

Cited by 9 publications

References 23 publications

Directional High-Value Regeneration of Lithium, Iron, and Phosphorus from Spent Lithium Iron Phosphate Batteries

Directional High-Value Regeneration of Lithium, Iron, and Phosphorus from Spent Lithium Iron Phosphate Batteries

Boosting the Acid Sites and Lattice Oxygen Activity of the Fe–Cu Catalyst for One-Pot Producing 2,5-Diformylfuran from Fructose

Regenerated LiFePO4/C for scrapped lithium iron phosphate powder batteries by pre-oxidation and reduction method

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