Stability Enhancement of Hard Carbon Anode Materials in Sodium-Ion Batteries through Controllable Oxygen-Doped Pitch Coating

Biomass-derived hard carbon (HC) materials, celebrated for their superior sodium storage capability and economic viability, have emerged as a promising candidate for anode materials in sodium-ion batteries (SIBs). However, the electronic conductivity, cycling stability, and initial Coulombic efficie...

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Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 27 vom: 15. Juli, Seite 18152-18165
Auteur principal: Liang, Weijie (Auteur)
Autres auteurs: Weng, Chongwei, Wang, Le, Zhan, Jinbei, Zhang, Hui, Feng, Yefeng, Xiong, Deping, Feng, Zuyong, He, Miao
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
Sujets:Journal Article
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Résumé:Biomass-derived hard carbon (HC) materials, celebrated for their superior sodium storage capability and economic viability, have emerged as a promising candidate for anode materials in sodium-ion batteries (SIBs). However, the electronic conductivity, cycling stability, and initial Coulombic efficiency (ICE) of HC materials remain significant challenges hindering their broader application. In this study, we successfully developed a HC anode material using Indian trumpetflower seeds (ITS) as precursors, enhanced by coating with pitch on their surface. This ITS-based HC material not only delivers an impressive reversible capacity of 430.3 mAh g-1 300 mA g-1 but also maintains a capacity retention of 63% at a current density of 1500 mA g-1, along with a remarkable ICE of 90.92%. After 900 cycles, the capacity retention remains high at 77%, demonstrating exceptional cycling stability. These performance enhancements are attributed to the appropriate concentration of carbonized oxygen-doped pitch (CODP) coating, which avoids direct contact between the electrolyte and ITS and introduces oxygen atoms to provide more active sites. This work not only provides a promising precursor for the fabrication of high-performance HC anodes for SIBs but also introduces an innovative synthetic strategy, injecting momentum into the commercialization process of SIBs
Description:Date Revised 15.07.2025
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1520-5827
DOI:10.1021/acs.langmuir.5c02098