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Title: Rational fabrication of nickel hydroxide shell on TiO{sub 2} nanorod core forming enhanced arrays for energy storage

Abstract

Highlights: • Construct TiO{sub 2}/Ni(OH){sub 2} core/shell arrays by ALD-assisted HS method. • Ni(OH){sub 2} nanoflake shells show high energy storage. • Porous core/shell structure is favorable for fast ion/electron transfer. - Abstract: Integration of different functional materials into core/shell composite arrays is of great importance for high-performance energy storage. In this work, we controllably synthesize Ni(OH){sub 2} nanoflake shell on the single-crystalline TiO{sub 2} nanorod cores forming composite core/shell arrays (CSAs). Interconnected Ni(OH){sub 2} nanoflakes of 20–30 nm are uniformly coated on the TiO{sub 2} nanorods of 80–120 nm via atomic layer deposition assisted hydrothermal method. Furthermore, porous network with numerous nanopores and large surface area is formed in this core/shell structure. In view of this advantageous architecture, the designed Ni(OH){sub 2}/TiO{sub 2} CSAs are studied as cathode of alkaline batteries and show high energy storage performance with a capacity of 121 mAh g{sup −1} at 1 A g{sup −1} and 91 mAh g{sup −1} at 5 A g{sup −1}, respectively. The boosted electrochemical properties are owing to the porous core/shell architecture with improved active area and accelerated ion/electron transfer characteristics.

Authors:
; ; ;
Publication Date:
OSTI Identifier:
22730487
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; ELECTROCHEMISTRY; ELECTRON TRANSFER; ENERGY CONVERSION; ENERGY STORAGE; HYDROTHERMAL SYNTHESIS; IONS; NANOSTRUCTURES; NICKEL HYDROXIDES; OXIDATION; POROUS MATERIALS; SURFACE AREA; THIN FILMS; TITANIUM OXIDES

Citation Formats

Chen, Minghua, Qi, Meili, Yin, Jinghua, and Chen, Qingguo. Rational fabrication of nickel hydroxide shell on TiO{sub 2} nanorod core forming enhanced arrays for energy storage. United States: N. p., 2017. Web. doi:10.1016/J.MATERRESBULL.2017.02.012.
Chen, Minghua, Qi, Meili, Yin, Jinghua, & Chen, Qingguo. Rational fabrication of nickel hydroxide shell on TiO{sub 2} nanorod core forming enhanced arrays for energy storage. United States. doi:10.1016/J.MATERRESBULL.2017.02.012.
Chen, Minghua, Qi, Meili, Yin, Jinghua, and Chen, Qingguo. Fri . "Rational fabrication of nickel hydroxide shell on TiO{sub 2} nanorod core forming enhanced arrays for energy storage". United States. doi:10.1016/J.MATERRESBULL.2017.02.012.
@article{osti_22730487,
title = {Rational fabrication of nickel hydroxide shell on TiO{sub 2} nanorod core forming enhanced arrays for energy storage},
author = {Chen, Minghua and Qi, Meili and Yin, Jinghua and Chen, Qingguo},
abstractNote = {Highlights: • Construct TiO{sub 2}/Ni(OH){sub 2} core/shell arrays by ALD-assisted HS method. • Ni(OH){sub 2} nanoflake shells show high energy storage. • Porous core/shell structure is favorable for fast ion/electron transfer. - Abstract: Integration of different functional materials into core/shell composite arrays is of great importance for high-performance energy storage. In this work, we controllably synthesize Ni(OH){sub 2} nanoflake shell on the single-crystalline TiO{sub 2} nanorod cores forming composite core/shell arrays (CSAs). Interconnected Ni(OH){sub 2} nanoflakes of 20–30 nm are uniformly coated on the TiO{sub 2} nanorods of 80–120 nm via atomic layer deposition assisted hydrothermal method. Furthermore, porous network with numerous nanopores and large surface area is formed in this core/shell structure. In view of this advantageous architecture, the designed Ni(OH){sub 2}/TiO{sub 2} CSAs are studied as cathode of alkaline batteries and show high energy storage performance with a capacity of 121 mAh g{sup −1} at 1 A g{sup −1} and 91 mAh g{sup −1} at 5 A g{sup −1}, respectively. The boosted electrochemical properties are owing to the porous core/shell architecture with improved active area and accelerated ion/electron transfer characteristics.},
doi = {10.1016/J.MATERRESBULL.2017.02.012},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 96,
place = {United States},
year = {2017},
month = {12}
}