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Research on Thermogravimetric-Differential Scanning Calorimeter of Spent Lithium Iron Phosphate Batteries Cathode Plate

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REWAS 2019

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The recovery of spent lithium iron phosphate batteries (LFPBs) has significant meaning in resource recycling and environmental protection. In order to investigate the effect of thermal treatment on the spent LFPBs cathode plate, in this paper, the thermogravimetric-differential scanning calorimetry (TG-DSC) of spent LFPBs cathode plate is researched. TG-DSC results indicate that two stages of weight losses and a stage of weight gain appear during the heating process with a weight change of −3.7, +1.0, and −2.4%. DSC curve showed two endothermic peaks at 165.6, 657.5 °C and two exothermic peaks at 475.6, 532.2 °C. XRD results indicate that LiFePO4 is oxidized to Li3Fe2(PO4)3 and Fe2O3 during the heating process and the electrode material could be easily separated from aluminum foil due to the pyrolysis of the binder. SEM-EDS results indicate that the agglomeration degree of cathode powders decreased after the TG-DSC test, the mole fraction of C and F decreased from 23.98 and 7.03% to 1.06 and 0.32%, which was due to the pyrolysis of binders and conductive additive.

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Acknowledgements

This work was funded by the Research Fund Program of State Key Laboratory of Rare Metals Separation and Comprehensive Utilization (No. GK-201806) and Anhui Province Research and Development Innovation Project for Automotive Power Battery Efficient Recycling System for which the authors are grateful.

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, 410083, China

    Yafei Jie, Shenghai Yang, Yongming Chen, Nannan Liu & Yanqing Lai

  2. Guangdong Research Institute of Rare Matals, Guangzhou, 510651, China

    Zhiqiang Liu

  3. State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangzhou, 510651, China

    Zhiqiang Liu

  4. College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China

    Fang Hu

Authors
  1. Yafei Jie
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  2. Shenghai Yang
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  3. Yongming Chen
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  4. Zhiqiang Liu
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  5. Fang Hu
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  6. Nannan Liu
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  7. Yanqing Lai
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Corresponding author

Correspondence to Yongming Chen .

Editor information

Editors and Affiliations

  1. Alfred University, Alfred, NY, USA

    Gabrielle Gaustad

  2. Gopher Resource, Eagan, MN, USA

    Camille Fleuriault

  3. Norwegian University of Science and Technology, Trondheim, Norway

    Mertol Gökelma

  4. Purdue University, West Lafayette, IN, USA

    John A. Howarter

  5. Massachusetts Institute of Technology, Cambridge, MA, USA

    Randolph Kirchain

  6. Colorado State University, Fort Collins, CO, USA

    Kaka Ma

  7. Umicore, Olen, Belgium

    Christina Meskers

  8. IND LLC, South Jordan, UT, USA

    Neale R. Neelameggham

  9. Massachusetts Institute of Technology, Cambridge, MA, USA

    Elsa Olivetti

  10. Worcester Polytechnic Institute, Worcester, MA, USA

    Adam C. Powell

  11. Worcester Polytechnic Institute, Worcester, MA, USA

    Fiseha Tesfaye

  12. Johan Gadolin Process Chem Ctr, Abo Akademi University, Turku, Finland

    Dirk Verhulst

  13. ArcelorMittal Global R&D, Schererville, IN, USA

    Mingming Zhang

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© 2019 The Minerals, Metals & Materials Society

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Jie, Y. et al. (2019). Research on Thermogravimetric-Differential Scanning Calorimeter of Spent Lithium Iron Phosphate Batteries Cathode Plate. In: Gaustad, G., et al. REWAS 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-10386-6_47

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