Phosphine Plasma Activation of α-Fe 2 O 3 for High Energy Asymmetric Supercapacitors

Handle URI:
http://hdl.handle.net/10754/627531
Title:
Phosphine Plasma Activation of α-Fe 2 O 3 for High Energy Asymmetric Supercapacitors
Authors:
Liang, Hanfeng; Xia, Chuan ( 0000-0003-4526-159X ) ; Emwas, Abdul-Hamid M.; Anjum, Dalaver H.; Miao, Xiaohe; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
We report a phosphine (PH3) plasma activation strategy for significantly boosting the electrochemical performance of supercapacitor electrodes. Using Fe2O3 as a demonstration, we show that the plasma activation simultaneously improves the conductivity, creates atomic-scale vacancies (defects), as well as increases active surface area, and thus leading to a greatly enhanced performance with a high areal capacitance of 340 mF cm-2 at 1 mA cm-2, compared to 66 mF cm-2 of pristine Fe2O3. Moreover, the asymmetric supercapacitor devices based on plasma-activated Fe2O3 anodes and electrodeposited MnO2 cathodes can achieve a high stack energy density of 0.42 mWh cm-3 at a stack power density of 10.3 mW cm-3 along with good stability (88% capacitance retention after 9000 cycles at 10 mA cm-2). Our work provides a simple yet effective strategy to greatly enhance the electrochemical performance of Fe2O3 anodes and to further promote their application in asymmetric supercapacitors.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Imaging and Characterization Core Lab; Core Lab, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
Citation:
Liang H, Xia C, Emwas A-H, Anjum DH, Miao X, et al. (2018) Phosphine Plasma Activation of α-Fe 2 O 3 for High Energy Asymmetric Supercapacitors. Nano Energy. Available: http://dx.doi.org/10.1016/j.nanoen.2018.04.032.
Publisher:
Elsevier BV
Journal:
Nano Energy
Issue Date:
12-Apr-2018
DOI:
10.1016/j.nanoen.2018.04.032
Type:
Article
ISSN:
2211-2855
Sponsors:
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S2211285518302611
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorLiang, Hanfengen
dc.contributor.authorXia, Chuanen
dc.contributor.authorEmwas, Abdul-Hamid M.en
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorMiao, Xiaoheen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2018-04-16T11:27:44Z-
dc.date.available2018-04-16T11:27:44Z-
dc.date.issued2018-04-12en
dc.identifier.citationLiang H, Xia C, Emwas A-H, Anjum DH, Miao X, et al. (2018) Phosphine Plasma Activation of α-Fe 2 O 3 for High Energy Asymmetric Supercapacitors. Nano Energy. Available: http://dx.doi.org/10.1016/j.nanoen.2018.04.032.en
dc.identifier.issn2211-2855en
dc.identifier.doi10.1016/j.nanoen.2018.04.032en
dc.identifier.urihttp://hdl.handle.net/10754/627531-
dc.description.abstractWe report a phosphine (PH3) plasma activation strategy for significantly boosting the electrochemical performance of supercapacitor electrodes. Using Fe2O3 as a demonstration, we show that the plasma activation simultaneously improves the conductivity, creates atomic-scale vacancies (defects), as well as increases active surface area, and thus leading to a greatly enhanced performance with a high areal capacitance of 340 mF cm-2 at 1 mA cm-2, compared to 66 mF cm-2 of pristine Fe2O3. Moreover, the asymmetric supercapacitor devices based on plasma-activated Fe2O3 anodes and electrodeposited MnO2 cathodes can achieve a high stack energy density of 0.42 mWh cm-3 at a stack power density of 10.3 mW cm-3 along with good stability (88% capacitance retention after 9000 cycles at 10 mA cm-2). Our work provides a simple yet effective strategy to greatly enhance the electrochemical performance of Fe2O3 anodes and to further promote their application in asymmetric supercapacitors.en
dc.description.sponsorshipResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S2211285518302611en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Nano Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Nano Energy, [, , (2018-04-12)] DOI: 10.1016/j.nanoen.2018.04.032 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjecthematiteen
dc.subjectFe2O3en
dc.subjectplasma activationen
dc.subjectsupercapacitorsen
dc.subjectenergy storageen
dc.titlePhosphine Plasma Activation of α-Fe 2 O 3 for High Energy Asymmetric Supercapacitorsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentImaging and Characterization Core Laben
dc.contributor.departmentCore Lab, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabiaen
dc.identifier.journalNano Energyen
dc.eprint.versionPost-printen
kaust.authorLiang, Hanfengen
kaust.authorXia, Chuanen
kaust.authorEmwas, Abdul-Hamid M.en
kaust.authorAnjum, Dalaver H.en
kaust.authorMiao, Xiaoheen
kaust.authorAlshareef, Husam N.en
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