Effect of carbon modification on the structure and electrochemical properties of recycled graphite anode materials

Chen, Yongzhi; Xu, Wen; Zhang, Xiaohong; Yang, Changchun; Wang, Lihua; Zhou, Lei; Li, Zuohong; Deng, Hong; Tao, Shengdong

doi:10.1007/s10854-023-10878-w

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…It can be observed from the figure that the degree of graphitization of FeCu/CNS is relatively high. This is attributed to the additional graphitization induced by the anchoring process of Fe and Cu on CNS. , The above results indicate that there are fewer lattice defects and the electron transfer resistance of FeCu/CNS is smaller …”

Section: Resultsmentioning

confidence: 89%

“…30,31 The above results indicate that there are fewer lattice defects and the electron transfer resistance of FeCu/CNS is smaller. 32 XPS tests were performed on FeCu/CNS, and the results are shown in Figure 2C−H. As can be seen in Figure 2C, the peaks at 285, 397, 532, 715, and 933 eV correspond to C 1s, N 1s, O 1s, Fe 2p, and Cu 2p, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Fe, Cu Co-Doped Carbon Nanosheets for Electrochemical-Colorimetric Detection of Acetaminophen

Gao,

Chu,

Zhou

et al. 2024

ACS Appl. Nano Mater.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Fe, Cu Co-Doped Carbon Nanosheets for Electrochemical-Colorimetric Detection of Acetaminophen

Gao,

Chu,

Zhou

et al. 2024

ACS Appl. Nano Mater.

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Regenerated Graphite Electrodes with Reconstructed Solid Electrolyte Interface and Enclosed Active Lithium Toward >100% Initial Coulombic Efficiency

Ji,

Zhang,

Yang

et al. 2024

Advanced Materials

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Solid electrolyte interface (SEI) is arguably the most important concern in graphite anodes, which determines their achievable Coulombic efficiency (CE), energy density, and cycling stability. In spent graphite anodes, there are already‐formed (yet loose and/or broken) SEIs and some residual active lithium, which, if could be inherited in the regenerated electrodes, are highly desired to compensate for the lithium loss due to SEI formation. However, current graphite regenerated approaches easily destroy the thin SEIs and residue active lithium, making their reuse impossible. Herein, we report a fast‐heating strategy (e.g., 1900 K for ∼ 150 ms) to upcycle degraded graphite (incomplete discharging) via instantly converting the loose original SEI layer (∼ 100 nm thick) to a compact and mostly inorganic one (∼10‐30 nm thick with a 26X higher Young's Modulus) and still retaining the activity of residual lithium. Thanks to the robust SEI and enclosed active lithium, the regenerated graphite exhibited 104.7% initial CE for half‐cell and gifted the full cells with LiFePO4 significantly‐improved initial CE (98.8% versus 83.2%) and energy density (309.4 versus 281.4 Wh kg−1), as compared with commercial graphite. The as‐proposed upcycling strategy turns the “waste” graphite into high‐value prelithiated ones, along with significant economic and environmental benefits.This article is protected by copyright. All rights reserved

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For regenerated graphite: Tailoring sub-surface architecture with strong pre-storage abilities towards high-rate properties

Yuan,

Dong,

Zeng

et al. 2024

Chemical Engineering Journal

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Effect of carbon modification on the structure and electrochemical properties of recycled graphite anode materials

Cited by 6 publications

References 30 publications

Fe, Cu Co-Doped Carbon Nanosheets for Electrochemical-Colorimetric Detection of Acetaminophen

Fe, Cu Co-Doped Carbon Nanosheets for Electrochemical-Colorimetric Detection of Acetaminophen

Regenerated Graphite Electrodes with Reconstructed Solid Electrolyte Interface and Enclosed Active Lithium Toward >100% Initial Coulombic Efficiency

For regenerated graphite: Tailoring sub-surface architecture with strong pre-storage abilities towards high-rate properties

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