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2021-05-19Zeitschriftenartikel DOI: 10.1149/1945-7111/abf5f6
Fabrication of S,N-Doped Carbon-Coated SnS2/SnS Heterostructures Supported by Hollow Carbon Microspheres for Sodium-Ion Storage
dc.contributor.authorGao, Suning
dc.contributor.authorLiu, Zaichun
dc.contributor.authorYang, Liangtao
dc.contributor.authorShao, Jie
dc.contributor.authorQu, Qunting
dc.contributor.authorWu, Yuping
dc.contributor.authorAdelhelm, Philipp
dc.contributor.authorHolze, Rudolf
dc.date.accessioned2022-01-31T14:41:10Z
dc.date.available2022-01-31T14:41:10Z
dc.date.issued2021-05-19none
dc.date.updated2022-01-31T08:44:50Z
dc.identifier.issn0013-4651
dc.identifier.urihttp://edoc.hu-berlin.de/18452/24659
dc.description.abstractDeveloping novel anode materials containing electroactive heterostructures which boost ion and charge transfer kinetics in a carbon matrix is still a great challenge. Here we report on a new smartly designed material: SnS2/SnS p-n heterostructures embedded in S,N-doped carbon layer supported by hollow carbon spheres (C@SnSx@C) by a facile method and applied as negative electrode material in sodium ion batteries. The C@SnSx@C2 (at optimized carbon ratio) negative electrode can deliver an initial reversible capacity of 636.5 mAh·g−1 at 0.1 A·g−1, superior rate capability (265.1 mAh·g−1 at rate of 10.0 A·g−1) and long cycle life (capacity retention of 96.3 % at 1.0 A·g−1 after 150 cycles). The SnS2/SnS p-n heterojunctions provide a lower sodium ion diffusion energy barrier (0.38 eV), higher Na+ adsorption energy (−4.66 eV) and higher electronic conductivity due to an internal electric field according to density functional theory calculations compared to plain SnS. Moreover, S,N-doped carbon facilitates electronic conductivity and buffers the volume changes during the conversion reaction-based SnSx upon sodium insertion and extraction process. Porous hollow carbon spheres contribute to prevent the agglomeration of SnS2/SnS nanosheets and keep the structural integrity. Our findings on this unique material might be extended to other ion battery technologies.eng
dc.description.sponsorshipSaint Petersburg State University https://doi.org/10.13039/501100004285
dc.description.sponsorshipNational Natural Science Foundation of China https://doi.org/10.13039/501100001809
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY-NC-ND 4.0) Attribution-NonCommercial-NoDerivatives 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectanode materialseng
dc.subjectsodium ion storageeng
dc.subjecthierarchical structureseng
dc.subjectheterostructureseng
dc.subjectS,N-doped carboneng
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftennone
dc.titleFabrication of S,N-Doped Carbon-Coated SnS2/SnS Heterostructures Supported by Hollow Carbon Microspheres for Sodium-Ion Storagenone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/24659-9
dc.identifier.doi10.1149/1945-7111/abf5f6none
dc.identifier.doihttp://dx.doi.org/10.18452/24048
dc.type.versionpublishedVersionnone
local.edoc.container-titleJournal of The Electrochemical Societynone
local.edoc.pages9none
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultätnone
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameIOP Publishingnone
local.edoc.container-publisher-placeBristolnone
local.edoc.container-volume168none
local.edoc.container-issue5none
dc.description.versionPeer Reviewednone
local.edoc.container-articlenumber050527none
dc.identifier.eissn1945-7111

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