SnO2 anode surface passivation by atomic layer deposited HfO2 improves li-ion battery performance

Handle URI:
http://hdl.handle.net/10754/563442
Title:
SnO2 anode surface passivation by atomic layer deposited HfO2 improves li-ion battery performance
Authors:
Yesibolati, Nulati; Shahid, Muhammad; Chen, Wei; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Reuter, Mark C.; Ross, Frances M.; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
For the first time, it is demonstrated that nanoscale HfO2 surface passivation layers formed by atomic layer deposition (ALD) significantly improve the performance of Li ion batteries with SnO2-based anodes. Specifically, the measured battery capacity at a current density of 150 mAg -1 after 100 cycles is 548 and 853 mAhg-1 for the uncoated and HfO2-coated anodes, respectively. Material analysis reveals that the HfO2 layers are amorphous in nature and conformably coat the SnO2-based anodes. In addition, the analysis reveals that ALD HfO2 not only protects the SnO2-based anodes from irreversible reactions with the electrolyte and buffers its volume change, but also chemically interacts with the SnO2 anodes to increase battery capacity, despite the fact that HfO2 is itself electrochemically inactive. The amorphous nature of HfO2 is an important factor in explaining its behavior, as it still allows sufficient Li diffusion for an efficient anode lithiation/delithiation process to occur, leading to higher battery capacity. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Advanced Membranes and Porous Materials Research Center; Core Labs; Functional Nanomaterials and Devices Research Group
Publisher:
Wiley-VCH Verlag
Journal:
Small
Issue Date:
14-Mar-2014
DOI:
10.1002/smll.201303898; 10.1002/smll.201470081
Type:
Article
ISSN:
16136810
Sponsors:
The authors wish to thank R. B. Rakhi for her support. HNA and FMR acknowledge the support from the KAUST-IBM grant.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorYesibolati, Nulatien
dc.contributor.authorShahid, Muhammaden
dc.contributor.authorChen, Weien
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorReuter, Mark C.en
dc.contributor.authorRoss, Frances M.en
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-03T11:51:35Zen
dc.date.available2015-08-03T11:51:35Zen
dc.date.issued2014-03-14en
dc.identifier.issn16136810en
dc.identifier.doi10.1002/smll.201303898en
dc.identifier.doi10.1002/smll.201470081en
dc.identifier.urihttp://hdl.handle.net/10754/563442en
dc.description.abstractFor the first time, it is demonstrated that nanoscale HfO2 surface passivation layers formed by atomic layer deposition (ALD) significantly improve the performance of Li ion batteries with SnO2-based anodes. Specifically, the measured battery capacity at a current density of 150 mAg -1 after 100 cycles is 548 and 853 mAhg-1 for the uncoated and HfO2-coated anodes, respectively. Material analysis reveals that the HfO2 layers are amorphous in nature and conformably coat the SnO2-based anodes. In addition, the analysis reveals that ALD HfO2 not only protects the SnO2-based anodes from irreversible reactions with the electrolyte and buffers its volume change, but also chemically interacts with the SnO2 anodes to increase battery capacity, despite the fact that HfO2 is itself electrochemically inactive. The amorphous nature of HfO2 is an important factor in explaining its behavior, as it still allows sufficient Li diffusion for an efficient anode lithiation/delithiation process to occur, leading to higher battery capacity. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipThe authors wish to thank R. B. Rakhi for her support. HNA and FMR acknowledge the support from the KAUST-IBM grant.en
dc.publisherWiley-VCH Verlagen
dc.subjectanode materialen
dc.subjectatomic layer depositionen
dc.subjectlithium ion batteryen
dc.titleSnO2 anode surface passivation by atomic layer deposited HfO2 improves li-ion battery performanceen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentCore Labsen
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalSmallen
dc.contributor.institutionIBM T.J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, NY 10598, United Statesen
kaust.authorYesibolati, Nulatien
kaust.authorShahid, Muhammaden
kaust.authorHedhili, Mohamed N.en
kaust.authorAlshareef, Husam N.en
kaust.authorChen, Weien
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