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Unprecedented and highly stable lithium storage capacity of (001) faceted nanosheet-constructed hierarchically porous TiO2/rGO hybrid architecture for high-performance Li-ion batteries.

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cam.issuedOnline2020-02-20
dc.contributor.authorYu, Wen-Bei
dc.contributor.authorHu, Zhi-Yi
dc.contributor.authorJin, Jun
dc.contributor.authorYi, Min
dc.contributor.authorYan, Min
dc.contributor.authorLi, Yu
dc.contributor.authorWang, Hong-En
dc.contributor.authorGao, Huan-Xin
dc.contributor.authorMai, Li-Qiang
dc.contributor.authorHasan, Tawfique
dc.contributor.authorXu, Bai-Xiang
dc.contributor.authorPeng, Dong-Liang
dc.contributor.authorVan Tendeloo, Gustaaf
dc.contributor.authorSu, Bao-Lian
dc.contributor.orcidSu, Bao-Lian [0000-0001-8474-0652]
dc.date.accessioned2022-01-06T11:50:32Z
dc.date.available2022-01-06T11:50:32Z
dc.date.issued2020-06
dc.date.updated2022-01-06T11:50:31Z
dc.description.abstractActive crystal facets can generate special properties for various applications. Herein, we report a (001) faceted nanosheet-constructed hierarchically porous TiO2/rGO hybrid architecture with unprecedented and highly stable lithium storage performance. Density functional theory calculations show that the (001) faceted TiO2 nanosheets enable enhanced reaction kinetics by reinforcing their contact with the electrolyte and shortening the path length of Li+ diffusion and insertion-extraction. The reduced graphene oxide (rGO) nanosheets in this TiO2/rGO hybrid largely improve charge transport, while the porous hierarchy at different length scales favors continuous electrolyte permeation and accommodates volume change. This hierarchically porous TiO2/rGO hybrid anode material demonstrates an excellent reversible capacity of 250 mAh g-1 at 1 C (1 C = 335 mA g-1) at a voltage window of 1.0-3.0 V. Even after 1000 cycles at 5 C and 500 cycles at 10 C, the anode retains exceptional and stable capacities of 176 and 160 mAh g-1, respectively. Moreover, the formed Li2Ti2O4 nanodots facilitate reversed Li+ insertion-extraction during the cycling process. The above results indicate the best performance of TiO2-based materials as anodes for lithium-ion batteries reported in the literature.
dc.identifier.doi10.17863/CAM.79600
dc.identifier.eissn2053-714X
dc.identifier.issn2095-5138
dc.identifier.otherPMC8288978
dc.identifier.other34692124
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/332154
dc.languageeng
dc.language.isoeng
dc.publisherOxford University Press (OUP)
dc.publisher.urlhttp://dx.doi.org/10.1093/nsr/nwaa028
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceessn: 2053-714X
dc.sourcenlmid: 101633095
dc.subject(001) faceted TiO2 nanosheets
dc.subjectLi2Ti2O4 crystallites
dc.subjectporous hierarchy
dc.subjectreduced graphene oxide
dc.subjectunprecedented lithium storage capacity
dc.titleUnprecedented and highly stable lithium storage capacity of (001) faceted nanosheet-constructed hierarchically porous TiO2/rGO hybrid architecture for high-performance Li-ion batteries.
dc.typeArticle
dcterms.dateAccepted2020-01-30
prism.endingPage1058
prism.issueIdentifier6
prism.publicationNameNatl Sci Rev
prism.startingPage1046
prism.volume7
pubs.funder-project-idChangjiang Scholars and Innovative Research Team in University (IRT_15R52)
pubs.funder-project-idNational Natural Science Foundation of China (U1663225)
pubs.funder-project-idNational Key R&amp (2016YFA0202603, 2016YFA0202602)
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by/4.0/
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1093/nsr/nwaa028

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