H2O2 assisted room temperature oxidation of Ti2C MXene for Li-ion battery anodes

Handle URI:
http://hdl.handle.net/10754/602357
Title:
H2O2 assisted room temperature oxidation of Ti2C MXene for Li-ion battery anodes
Authors:
Ahmed, Bilal ( 0000-0002-6707-822X ) ; Anjum, Dalaver H.; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Gogotsi, Yury; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
Herein we demonstrate that a prominent member of the MXene family, Ti2C, undergoes surface oxidation at room temperature when treated with hydrogen peroxide (H2O2). The H2O2 treatment results in opening up of MXene sheets and formation of TiO2 nanocrystals on their surface, which is evidenced by the high surface area of H2O2 treated MXene and X-ray diffraction (XRD) analysis. We show that the reaction time and the amount of hydrogen peroxide used are the limiting factors, which determine the morphology and composition of the final product. Furthermore, it is shown that the performance of H2O2 treated MXene as an anode material in Li ion batteries (LIBs) was significantly improved as compared to as-prepared MXenes. For instance, after 50 charge/discharge cycles, specific discharge capacities of 389 mA h g−1, 337 mA h g−1 and 297 mA h g−1 were obtained for H2O2 treated MXene at current densities of 100 mA g−1, 500 mA g−1 and 1000 mA g−1, respectively. In addition, when tested at a very high current density, such as 5000 mA g−1, the H2O2 treated MXene showed a specific capacity of 150 mA h g−1 and excellent rate capability. These results clearly demonstrate that H2O2 treatment of Ti2C MXene improves MXene properties in energy storage applications, such as Li ion batteries or capacitors.
KAUST Department:
Materials Science and Engineering (MSE)
Citation:
H2O2 assisted room temperature oxidation of Ti2C MXene for Li-ion battery anodes 2016 Nanoscale
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
8-Mar-2016
DOI:
10.1039/C6NR00002A
Type:
Article
ISSN:
2040-3364; 2040-3372
Sponsors:
This research was supported by King Abdullah University of Science and Technology under the KAUST-Drexel University Competitive Research Grant.
Additional Links:
http://xlink.rsc.org/?DOI=C6NR00002A
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorAhmed, Bilalen
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorGogotsi, Yuryen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2016-03-21T12:18:53Zen
dc.date.available2016-03-21T12:18:53Zen
dc.date.issued2016-03-08en
dc.identifier.citationH2O2 assisted room temperature oxidation of Ti2C MXene for Li-ion battery anodes 2016 Nanoscaleen
dc.identifier.issn2040-3364en
dc.identifier.issn2040-3372en
dc.identifier.doi10.1039/C6NR00002Aen
dc.identifier.urihttp://hdl.handle.net/10754/602357en
dc.description.abstractHerein we demonstrate that a prominent member of the MXene family, Ti2C, undergoes surface oxidation at room temperature when treated with hydrogen peroxide (H2O2). The H2O2 treatment results in opening up of MXene sheets and formation of TiO2 nanocrystals on their surface, which is evidenced by the high surface area of H2O2 treated MXene and X-ray diffraction (XRD) analysis. We show that the reaction time and the amount of hydrogen peroxide used are the limiting factors, which determine the morphology and composition of the final product. Furthermore, it is shown that the performance of H2O2 treated MXene as an anode material in Li ion batteries (LIBs) was significantly improved as compared to as-prepared MXenes. For instance, after 50 charge/discharge cycles, specific discharge capacities of 389 mA h g−1, 337 mA h g−1 and 297 mA h g−1 were obtained for H2O2 treated MXene at current densities of 100 mA g−1, 500 mA g−1 and 1000 mA g−1, respectively. In addition, when tested at a very high current density, such as 5000 mA g−1, the H2O2 treated MXene showed a specific capacity of 150 mA h g−1 and excellent rate capability. These results clearly demonstrate that H2O2 treatment of Ti2C MXene improves MXene properties in energy storage applications, such as Li ion batteries or capacitors.en
dc.description.sponsorshipThis research was supported by King Abdullah University of Science and Technology under the KAUST-Drexel University Competitive Research Grant.en
dc.language.isoenen
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://xlink.rsc.org/?DOI=C6NR00002Aen
dc.rightsArchived with thanks to Nanoscaleen
dc.titleH2O2 assisted room temperature oxidation of Ti2C MXene for Li-ion battery anodesen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.identifier.journalNanoscaleen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Materials Science and Engineering, and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAhmed, Bilalen
kaust.authorAnjum, Dalaver H.en
kaust.authorHedhili, Mohamed N.en
kaust.authorAlshareef, Husam N.en
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