Wang, B, Teng, X, Li, X, Fielding, AJ, Wang, W, Liu, H, Zhao, Z, Li, Y, Iamprasertkun, P, Yang, L, Ruiz, NT, Li, Q, Wu, M and Hu, H (2024) Spin Charge of Co Nanoparticles Loaded on the Carbon Substrate Enabling Rate-Capable Lithium Storage at High Mass-Loadings. Advanced Functional Materials. ISSN 1616-301X

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Abstract

Developing high mass-loading electrodes is crucial for enhancing the energy density of current batteries, yet challenges such as poor rate performance and cycling instability must be addressed. Spin charge storage on transition metal nanoparticle surfaces, characterized by rapid charging and the absence of phase transitions, offers an ideal storage behavior for high mass-loading electrodes. In this study, electrospinning is utilized to fabricate free-standing carbon nanofibers incorporating Co nanoparticles for high-mass loading and high-performance anodes. The resulting anode, with a maximum mass loading of 6.8 mg cm−2, exhibits remarkable cycle stability and high-rate performance of 2 A g−1 at a capacity over 3 mAh cm−2, superior than reported results. Magnetometry and electron paramagnetic resonance spectroscopy are employed to monitor the charge storage mechanism of the Co@CNFs, involving both the reversible formation of a spin capacitance and the growth of radical anions in the solid electrolyte interface. Additionally, in situ X-ray diffraction and optical microscopy provide direct evidence of the absence of mechanical stress-induced phenomena within the spin charge process, attributed to high-rate capable lithium storage under high mass loading. The strategic approach presented herein offers a reliable methodology for engineering high-energy-density lithium-ion batteries.

Item Type:	Article
Additional Information:	This is the peer reviewed version of the following article: B. Wang, X. Teng, X. Li, A. J. Fielding, W. Wang, H. Liu, Z. Zhao, Y. Li, P. Iamprasertkun, L. Yang, N. T. Ruiz, Q. Li, M. Wu, H. Hu, Spin Charge of Co Nanoparticles Loaded on the Carbon Substrate Enabling Rate-Capable Lithium Storage at High Mass-Loadings. Adv. Funct. Mater. 2024, 2407494. https://doi.org/10.1002/adfm.202407494, which has been published in final form athttps://doi.org/10.1002/adfm.202407494. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Uncontrolled Keywords:	high-mass loading; in situ magnetometry; lithium storage; spin charge; 02 Physical Sciences; 03 Chemical Sciences; 09 Engineering; Materials
Subjects:	T Technology > T Technology (General)
Divisions:	Pharmacy and Biomolecular Sciences
Publisher:	Wiley
SWORD Depositor:	A Symplectic
Date Deposited:	09 Oct 2024 10:47
Last Modified:	09 Oct 2024 10:47
DOI or ID number:	10.1002/adfm.202407494
URI:	https://researchonline.ljmu.ac.uk/id/eprint/24465

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