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Surface chemistry induced robust SEI on graphite surface via soft carbon coating enables fast lithium storage
Zheng, Biao1; Zhou, Wang1; Liu, Hui2; Chen, Shi3; Gao, Peng1; Wang, Zhiyong4; Liu, Jilei1
2024-01-31
Source PublicationCarbon
ISSN0008-6223
Volume218Pages:118729
Abstract

The realization of fast-charging lithium-ion batteries with long cycle life using graphite anode is typically hindered by the uncontrollable lithium plating on graphite surface. Herein we have systematically investigated the effects of soft carbon coating on SEI properties and Li storage capability. A variety of analytical studies combined with three-electrode impedance measurement and interface analysis demonstrate that the carbon coating effectively mitigates the formation of resistive films on the graphite surface, leading to facilitated charge transfer and low energy barrier. The depth-profiling XPS analysis clearly shows that the formation of a uniform, robust and LiF-rich SEI plays a dominant role in enhancing the interfacial kinetics, whereas the Li diffusion in bulk electrode is merely affected. As a result, the graphite anode with carbon coating exhibits enhanced fast-charging performance and cycle life, including a capacity retention ratio of 98.3 % after 100 cycles at 2C-CV. In general, this work reveals the critical role of coating layer chemistry in regulating the SEI properties and Li storage performance, which provides a valuable guidance for the rational design of practical graphite anode for fast-charging.

KeywordCarbon Coating Electrode-electrolyte Interphases Fast Charging Graphite Anodes Lithium-ion Batteries
DOI10.1016/j.carbon.2023.118729
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:001136871200001
PublisherPERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Scopus ID2-s2.0-85179887519
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Citation statistics
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorGao, Peng; Wang, Zhiyong; Liu, Jilei
Affiliation1.Hunan Univ, Coll Mat Sci & Engn, Hunan Joint Int Lab Adv Mat & Technol Clean Energy, Hunan Prov Key Lab Adv Carbon Mat & Appl Technol, Changsha 410082, Peoples R China
2.School of Chemistry and Material Science, Hunan Agricultural University, Changsha, 410128, China
3.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macau, 999078, China
4.Hunan Zhongke Shinzoom Co, Ltd, Changsha, 410205, China
Recommended Citation
GB/T 7714
Zheng, Biao,Zhou, Wang,Liu, Hui,et al. Surface chemistry induced robust SEI on graphite surface via soft carbon coating enables fast lithium storage[J]. Carbon, 2024, 218, 118729.
APA Zheng, Biao., Zhou, Wang., Liu, Hui., Chen, Shi., Gao, Peng., Wang, Zhiyong., & Liu, Jilei (2024). Surface chemistry induced robust SEI on graphite surface via soft carbon coating enables fast lithium storage. Carbon, 218, 118729.
MLA Zheng, Biao,et al."Surface chemistry induced robust SEI on graphite surface via soft carbon coating enables fast lithium storage".Carbon 218(2024):118729.
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