Exploring highly porous Co2P nanowire arrays for electrochemical energy storage

Controllable synthesis of mesoporous conductive metal phosphide nanowire arrays is critical for developing highly-active electrodes of alkaline batteries. Herein we develop a simple combined strategy for rational synthesis of mesoporous Co2P nanowire arrays by hydrothermal-phosphorization method. Fr...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of power sources Jg. 342; S. 964 - 969
Hauptverfasser: Chen, Minghua, Zhou, Weiwei, Qi, Meili, Yin, Jinghua, Xia, Xinhui, Chen, Qingguo
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier B.V 28.02.2017
Schlagworte:
Alkaline batteries
Cobalt phosphides
Energy storage
Mesoporous arrays
Phosphorization
Alkaline batteries
Mesoporous arrays
Phosphorization
Cobalt phosphides
Energy storage
ISSN:0378-7753, 1873-2755
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Controllable synthesis of mesoporous conductive metal phosphide nanowire arrays is critical for developing highly-active electrodes of alkaline batteries. Herein we develop a simple combined strategy for rational synthesis of mesoporous Co2P nanowire arrays by hydrothermal-phosphorization method. Free-standing mesoporous Co2P nanowires consisting of interconnected nanoparticles of 10–20 nm grow vertically to the substrate forming arrays. High electrical conductivity and large porosity are obtained in the arrays architecture. When characterized as the cathode of high-rate alkaline batteries, the designed Co2P nanowire arrays are proven with good electrochemical performance with a large capacity (133 mAh g−1 at 1 A g−1), stable cycling life with a capacity retention of almost 100% after 5000 cycles at 10 A g−1 owing to the mesoporous nanowire structure with short ion/electron transport path. Our synthetic approach can be useful for construction of other porous metal phosphide arrays for energy storage and conversion. Self-supported mesoporous Co2P nanowire arrays are prepared by a hydrothermal-phosphorization method and show good electrochemical performance with high capacity and stable cycling life. [Display omitted] •Construct self-supported mesoporous Co2P nanowire arrays.•Mesoporous Co2P nanowire arrays show high capacity and stable cycles.•Mesoporous nanowire arrays structure is favorable for fast ion/electron transfer.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2017.01.014