Low temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitors

Handle URI:
http://hdl.handle.net/10754/623863
Title:
Low temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitors
Authors:
Liang, Hanfeng; Xia, Chuan ( 0000-0003-4526-159X ) ; Jiang, Qiu; Gandi, Appala; Schwingenschlögl, Udo ( 0000-0003-4179-7231 ) ; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
We report a versatile route for the preparation of metal phosphides using PH plasma for supercapacitor applications. The high reactivity of plasma allows rapid and low temperature conversion of hydroxides into monometallic, bimetallic, or even more complex nanostructured phosphides. These same phosphides are much more difficult to synthesize by conventional methods. Further, we present a general strategy for significantly enhancing the electrochemical performance of monometallic phosphides by substituting extrinsic metal atoms. Using NiCoP as a demonstration, we show that the Co substitution into NiP not only effectively alters the electronic structure and improves the intrinsic reactivity and electrical conductivity, but also stabilizes Ni species when used as supercapacitor electrode materials. As a result, the NiCoP nanosheet electrodes achieve high electrochemical activity and good stability in 1 M KOH electrolyte. More importantly, our assembled NiCoP nanoplates//graphene films asymmetric supercapacitor devices can deliver a high energy density of 32.9 Wh kg at a power density of 1301 W kg, along with outstanding cycling performance (83% capacity retention after 5000 cycles at 20 A g). This activity outperforms most of the NiCo-based materials and renders the NiCoP nanoplates a promising candidate for capacitive storage devices.
KAUST Department:
Materials Science and Engineering Program
Citation:
Liang H, Xia C, Jiang Q, Gandi AN, Schwingenschlögl U, et al. (2017) Low temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitors. Nano Energy 35: 331–340. Available: http://dx.doi.org/10.1016/j.nanoen.2017.04.007.
Publisher:
Elsevier BV
Journal:
Nano Energy
Issue Date:
6-Apr-2017
DOI:
10.1016/j.nanoen.2017.04.007
Type:
Article
ISSN:
2211-2855
Sponsors:
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). Figs. 1 and 6a were produced by Ivan Gromicho, scientific illustrator at KAUST.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S2211285517302057
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorLiang, Hanfengen
dc.contributor.authorXia, Chuanen
dc.contributor.authorJiang, Qiuen
dc.contributor.authorGandi, Appalaen
dc.contributor.authorSchwingenschlögl, Udoen
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2017-05-31T11:23:10Z-
dc.date.available2017-05-31T11:23:10Z-
dc.date.issued2017-04-06en
dc.identifier.citationLiang H, Xia C, Jiang Q, Gandi AN, Schwingenschlögl U, et al. (2017) Low temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitors. Nano Energy 35: 331–340. Available: http://dx.doi.org/10.1016/j.nanoen.2017.04.007.en
dc.identifier.issn2211-2855en
dc.identifier.doi10.1016/j.nanoen.2017.04.007en
dc.identifier.urihttp://hdl.handle.net/10754/623863-
dc.description.abstractWe report a versatile route for the preparation of metal phosphides using PH plasma for supercapacitor applications. The high reactivity of plasma allows rapid and low temperature conversion of hydroxides into monometallic, bimetallic, or even more complex nanostructured phosphides. These same phosphides are much more difficult to synthesize by conventional methods. Further, we present a general strategy for significantly enhancing the electrochemical performance of monometallic phosphides by substituting extrinsic metal atoms. Using NiCoP as a demonstration, we show that the Co substitution into NiP not only effectively alters the electronic structure and improves the intrinsic reactivity and electrical conductivity, but also stabilizes Ni species when used as supercapacitor electrode materials. As a result, the NiCoP nanosheet electrodes achieve high electrochemical activity and good stability in 1 M KOH electrolyte. More importantly, our assembled NiCoP nanoplates//graphene films asymmetric supercapacitor devices can deliver a high energy density of 32.9 Wh kg at a power density of 1301 W kg, along with outstanding cycling performance (83% capacity retention after 5000 cycles at 20 A g). This activity outperforms most of the NiCo-based materials and renders the NiCoP nanoplates a promising candidate for capacitive storage devices.en
dc.description.sponsorshipResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). Figs. 1 and 6a were produced by Ivan Gromicho, scientific illustrator at KAUST.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S2211285517302057en
dc.subjectAsymmetric supercapacitorsen
dc.subjectEnergy storageen
dc.subjectNiCoPen
dc.subjectPlasma synthesisen
dc.subjectTransition metal phosphidesen
dc.titleLow temperature synthesis of ternary metal phosphides using plasma for asymmetric supercapacitorsen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalNano Energyen
kaust.authorLiang, Hanfengen
kaust.authorXia, Chuanen
kaust.authorJiang, Qiuen
kaust.authorGandi, Appalaen
kaust.authorSchwingenschlögl, Udoen
kaust.authorAlshareef, Husam N.en
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