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Title: Directional preparation of cobalt oxide nanoflakes grown on cobalt nanowires as composite cathode for high-performance alkaline batteries

Abstract

Graphical abstract: Self-supported hierarchical porous CoO@Co core/shell arrays are prepared by combined hydrothermal plus electrodeposition methods and exhibit good electrochemical performances with high capacity & stable cycling life. - Highlights: • Construct self-supported porous CoO@Co core/branch arrays. • Porous CoO@Co composite arrays show high capacity and good cycling life. • Hierarchical porous composite structure is favorable for fast ion/electron transfer. - Abstract: Synthesis of multicomponent core/branch arrays is important for development of advanced energy storage devices. Herein we fabricate porous CoO@Co core/branch arrays by successive hydrothermal + electrodeposition methods CoO nanoflakes branch is uniformly coated on the Co nanowire core forming composite core/branch arrays (CBAs). The CoO@Co CBAs possess combined properties of highly porous structure and strong mechanical stability. As cathode for alkaline batteries, the obtained CoO@Co CBAs exhibit good electrochemical performances with high a capacity of 91.5 mAh g{sup −1} at 1 A g{sup −1} and stable high-rate cycling life (73.5 mAh g{sup −1} after 12,000 cycles at 10 A g{sup −1}). The hierarchical core/branch architecture provides positive roles in the enhancement of electrochemical properties with fast electronic transportation path, and short diffusion channels of ions. Our finding offers a new way to construct high-performance cathode of alkaline batteries.

Authors:
 [1];  [2];  [3];  [4]
  1. Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014 (China)
  2. Wenzhou Environmental Monitoring Center Station, Wenzhou, 35000 (China)
  3. Hang Zhou Institute of Calibration and Testing for Quality and Technical Supervision, Hangzhou 310019 (China)
  4. Research Institute of Narada Power Source Co., Ltd, Hangzhou 311305 (China)
Publication Date:
OSTI Identifier:
22730484
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 96; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CAPACITORS; CAPACITY; CARBON MONOXIDE; CATHODES; COBALT OXIDES; ELECTROCHEMISTRY; ELECTRON TRANSFER; ENERGY CONVERSION; ENERGY STORAGE; IONS; NANOWIRES; POROUS MATERIALS; SYNTHESIS; THIN FILMS

Citation Formats

Ma, Hong, Liu, Xiufeng, Zhang, Dong, and Xiang, Jiayuan. Directional preparation of cobalt oxide nanoflakes grown on cobalt nanowires as composite cathode for high-performance alkaline batteries. United States: N. p., 2017. Web. doi:10.1016/J.MATERRESBULL.2017.02.019.
Ma, Hong, Liu, Xiufeng, Zhang, Dong, & Xiang, Jiayuan. Directional preparation of cobalt oxide nanoflakes grown on cobalt nanowires as composite cathode for high-performance alkaline batteries. United States. doi:10.1016/J.MATERRESBULL.2017.02.019.
Ma, Hong, Liu, Xiufeng, Zhang, Dong, and Xiang, Jiayuan. Fri . "Directional preparation of cobalt oxide nanoflakes grown on cobalt nanowires as composite cathode for high-performance alkaline batteries". United States. doi:10.1016/J.MATERRESBULL.2017.02.019.
@article{osti_22730484,
title = {Directional preparation of cobalt oxide nanoflakes grown on cobalt nanowires as composite cathode for high-performance alkaline batteries},
author = {Ma, Hong and Liu, Xiufeng and Zhang, Dong and Xiang, Jiayuan},
abstractNote = {Graphical abstract: Self-supported hierarchical porous CoO@Co core/shell arrays are prepared by combined hydrothermal plus electrodeposition methods and exhibit good electrochemical performances with high capacity & stable cycling life. - Highlights: • Construct self-supported porous CoO@Co core/branch arrays. • Porous CoO@Co composite arrays show high capacity and good cycling life. • Hierarchical porous composite structure is favorable for fast ion/electron transfer. - Abstract: Synthesis of multicomponent core/branch arrays is important for development of advanced energy storage devices. Herein we fabricate porous CoO@Co core/branch arrays by successive hydrothermal + electrodeposition methods CoO nanoflakes branch is uniformly coated on the Co nanowire core forming composite core/branch arrays (CBAs). The CoO@Co CBAs possess combined properties of highly porous structure and strong mechanical stability. As cathode for alkaline batteries, the obtained CoO@Co CBAs exhibit good electrochemical performances with high a capacity of 91.5 mAh g{sup −1} at 1 A g{sup −1} and stable high-rate cycling life (73.5 mAh g{sup −1} after 12,000 cycles at 10 A g{sup −1}). The hierarchical core/branch architecture provides positive roles in the enhancement of electrochemical properties with fast electronic transportation path, and short diffusion channels of ions. Our finding offers a new way to construct high-performance cathode of alkaline batteries.},
doi = {10.1016/J.MATERRESBULL.2017.02.019},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 96,
place = {United States},
year = {2017},
month = {12}
}