Introduced Iron‐Based Catalysts for Low‐Temperature Upcycling Regeneration of Spent Graphite towards Ultra‐Fast Lithium Storage Properties DOI
Bin Wang, Jiexiang Li,

Zihao Zeng

et al.

Small, Journal Year: 2024, Volume and Issue: 20(48)

Published: Aug. 26, 2024

Abstract Spent graphite, as the main component of retired batteries, have attracted plenty attentions. Although a series recycling strategies are proposed, they still suffer from high cost regeneration and large CO 2 emission, mainly ascribed to full‐recovery surface internal phase at ultra‐high temperature. However, existing suitable defects is conductive their energy‐storage abilities. Herein, with introduction Fe‐based catalysts, spent graphite successfully repaired low temperature tailored traits, including conductivities, isotropy so on. As Li‐storage anodes, all samples can display capacity 340 mAh g −1 above 1.0 C after 200 cycles. At rate 5.0 C, be also kept ≈300 , remained ≈233 even 1000 Assisted by electrochemical kinetic behaviors, cycling traits dynamic transformations detailed explored, activated/fading mechanism, Li‐depositions forming etc. Moreover, calculated constant time as‐optimized regenerated sample ≈3.0 × 10 −4 s, further revealing importance designing. Therefore, work expected shed light on offer low‐temperature value.

Language: Английский

Activated Graphite with Richly Oxygenated Surface from Spent Lithium‐Ion Batteries for Microwave Absorption DOI Open Access
Fangyu Zheng, Peikun Wu, Lizhi Wang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Designing spent graphite anodes from lithium-ion batteries (LIBs) for applications beyond regenerated offers significant potential promoting the recycling of LIBs. The battery-grade graphite, characterized by a highly graphitized structure, demonstrates excellent conductive loss capabilities, making it suitable microwave absorption. During Li-ion intercalation and deintercalation processes in battery operation, surface layer (SG) becomes activated, forming oxygen-rich functional groups that enhance polarization mechanism. To further control achieve optimized impedance matching, reduced graphene oxide (rGO) is employed as modifier. Herein, rGO serves binder, effectively combining individual SG particles. matched Fermi levels reduce interfacial barrier, facilitating rapid electron transfer. Simultaneously, their combination forms 3D conduction network, which not only enhances multiple scattering, reflection, attenuation electromagnetic waves but also provides abundant centers increased As result, SG/rGO aerogel achieves an impressive effective absorption bandwidth 7.04 GHz accompanied minimum reflection -51.1 dB. This study broadens scope LIBs utilization insights wilder more applications.

Language: Английский

Citations

2
Upcycling of photovoltaic waste graphite into high performance graphite anode DOI
Jieming Xiong,

Yanfeng Wang,

Jijun Lu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 555 - 564

Published: Jan. 21, 2025

Language: Английский

Citations

0
Quenching of spent graphite: Upcycling regeneration with tailoring subsurface and in-plane defects towards high-rate properties DOI
Jiexiang Li,

Hanyu Zhou,

Y. S. Gou

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236890 - 236890

Published: April 2, 2025

Language: Английский

Citations

0
Regeneration of Spent Graphite via Graphite-like Turbostratic Carbon Coating for Advanced Li Ion Battery Anode DOI
Shi‐He Luo, Fengrui Liu,

Wanshi Tianxu

et al.

Energy storage materials, Journal Year: 2024, Volume and Issue: 73, P. 103833 - 103833

Published: Oct. 12, 2024

Language: Английский

Citations

3
Introduced Iron‐Based Catalysts for Low‐Temperature Upcycling Regeneration of Spent Graphite towards Ultra‐Fast Lithium Storage Properties DOI
Bin Wang, Jiexiang Li,

Zihao Zeng

et al.

Small, Journal Year: 2024, Volume and Issue: 20(48)

Published: Aug. 26, 2024

Abstract Spent graphite, as the main component of retired batteries, have attracted plenty attentions. Although a series recycling strategies are proposed, they still suffer from high cost regeneration and large CO 2 emission, mainly ascribed to full‐recovery surface internal phase at ultra‐high temperature. However, existing suitable defects is conductive their energy‐storage abilities. Herein, with introduction Fe‐based catalysts, spent graphite successfully repaired low temperature tailored traits, including conductivities, isotropy so on. As Li‐storage anodes, all samples can display capacity 340 mAh g −1 above 1.0 C after 200 cycles. At rate 5.0 C, be also kept ≈300 , remained ≈233 even 1000 Assisted by electrochemical kinetic behaviors, cycling traits dynamic transformations detailed explored, activated/fading mechanism, Li‐depositions forming etc. Moreover, calculated constant time as‐optimized regenerated sample ≈3.0 × 10 −4 s, further revealing importance designing. Therefore, work expected shed light on offer low‐temperature value.

Language: Английский

Citations

1