Boosting the kinetics of PF6- into graphitic layers for the optimal cathode of dual-ion batteries: the rehearsal of pre-intercalating Li+

doi:10.1016/j.jechem.2022.04.009

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	Boosting the kinetics of PF6- into graphitic layers for the optimal cathode of dual-ion batteries: the rehearsal of pre-intercalating Li+
	H. Yang; T. T. Qin; X. Y. Zhou; Y. Feng; Z. Z. Wang; X. Ge; N. L. Yue; D. B. Li; W. Zhang and W. T. Zheng
刊名	Journal of Energy Chemistry
	2022
卷号	71 页码:392-399
ISSN号	2095-4956
DOI	10.1016/j.jechem.2022.04.009
英文摘要	Large anions exhibit slow diffusion kinetics in graphite cathode of dual-ion batteries (DIBs); particularly at high current density, it suffers severely from the largely-reduced interlayer utilization of graphite cathode, which as a bottleneck limits the fast charge application of DIBs. To maximize interlayer utilization and achieve faster anion diffusion kinetics, a fast and uncrowded anion transport channel must be established. Herein, Li+ was pre-intercalated into the graphite paper (GP) cathode to increase the interlayer spacing, and then hosted for the PF-6 anion storage. Combined with theoretical calculation, it shows that the local interlayer spacing enlargement and the residual Li334659365_20220507122404649 / urn:si:7735412 reduce the anion intercalation energy and diffusion barrier, leading to better rate stability. The obtained GP with Li+ pre-intercalation (GP-Li) electrode exhibits a discharge capacity of 23.1 mAh g(-1) at a high current of 1300 mA g(-1) This work provides a facile method to efficiently improve the interlayer utilization of graphite cathode at large currents. (C) The Author(s). Published by Elsevier B.V. on behalf of King Saud University. All rights reserved.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66448]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	H. Yang,T. T. Qin,X. Y. Zhou,et al. Boosting the kinetics of PF6- into graphitic layers for the optimal cathode of dual-ion batteries: the rehearsal of pre-intercalating Li+[J]. Journal of Energy Chemistry,2022,71:392-399.
APA	H. Yang.,T. T. Qin.,X. Y. Zhou.,Y. Feng.,Z. Z. Wang.,...&W. Zhang and W. T. Zheng.(2022).Boosting the kinetics of PF6- into graphitic layers for the optimal cathode of dual-ion batteries: the rehearsal of pre-intercalating Li+.Journal of Energy Chemistry,71,392-399.
MLA	H. Yang,et al."Boosting the kinetics of PF6- into graphitic layers for the optimal cathode of dual-ion batteries: the rehearsal of pre-intercalating Li+".Journal of Energy Chemistry 71(2022):392-399.