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dc.contributor.authorYe, Xinlien_US
dc.contributor.authorWang, Haishengen_US
dc.contributor.authorChen, Zhaofengen_US
dc.contributor.authorLi, Minen_US
dc.contributor.authorWang, Tingen_US
dc.contributor.authorWu, Caoen_US
dc.contributor.authorZhang, Junxiongen_US
dc.contributor.authorShen, Zexiangen_US
dc.identifier.citationYe, X., Wang, H., Chen, Z., Li, M., Wang, T., Wu, C., Zhang, J. & Shen, Z. (2021). Maximized pseudo-graphitic content in self-supported hollow interconnected carbon foam boosting ultrastable Na-ion storage. Electrochimica Acta, 371, 137776-.
dc.description.abstractHard carbons are the most promising commercialized anodes for sodium-ion batteries (SIBs). However, it is still a great challenge to design highly stable hard carbon anodes coupled with a large reversible capacity. Herein, a self-supported hollow interconnected carbon foam (HICF) is developed by one-step pyrolysis of a commercial and low-cost melamine sponge. The integration of interconnected network and hollow feature can not only provide strong mechanical stability and additional inner space to effectively accommodate the structural deformation from Na+ insertion/extraction, but also enable fast electron and Na-ion transport to achieve a large reversible capacity. As a result, HICF delivers a large reversible capacity of 306 mAh g−1 at 100 mA g−1 and an ultralong cycle life with 86.4% capacity retention over 1000 cycles at 1000 mA g−1. The superior Na-storage performance is also contributed by the maximized content (63.24%) of pseudo-graphitic phase in HICF realized by tuning pyrolysis time, as the pseudo-graphitic phase could store more sodium ions and maintain more stable microstructure owing to its appropriate D-spacing than highly disordered phase. Furthermore, kinetic analysis based on cyclic voltammetry (CV) and galvanostatic intermittent titration technique (GITT) verifies the adsorption–intercalation mechanism. This work provides a low-cost and high-performance anode candidate for the future practical applications of SIBs.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.relationMOE2016-T3-1-006 (S)en_US
dc.relation.ispartofElectrochimica Actaen_US
dc.rights© 2021 Elsevier Ltd. All rights reserved.en_US
dc.titleMaximized pseudo-graphitic content in self-supported hollow interconnected carbon foam boosting ultrastable Na-ion storageen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.subject.keywordsCarbon Foamen_US
dc.description.acknowledgementZ.F.C acknowledges the financial support from the Equipment Advanced Research Field Foundation of China (No. 61409220210 and No. 61409220204). X.L.Y acknowledges the financial support from the Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX19_0178) and the program of China Scholarships Council (No. 201906830022). Z.X.S. acknowledges the financial support from Ministry of Education, Singapore, AcRF Tier 1 (Reference No. RG103/16 and RG195/17) and AcRF Tier 3 (MOE2016-T3-1-006 (S)).en_US
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