Design and synthesis of metal oxide hollow nanopowders for lithium-ion batteries by combining nanoscale Kirkendall diffusion and flame spray pyrolysis

Jong Min Won; Jong Hwa Kim; Yun Ju Choi; Jung Sang Cho; Yun Chan Kang

doi:10.1016/j.ceramint.2015.12.092

Design and synthesis of metal oxide hollow nanopowders for lithium-ion batteries by combining nanoscale Kirkendall diffusion and flame spray pyrolysis

Jong Min Won, Jong Hwa Kim, Yun Ju Choi, Jung Sang Cho, Yun Chan Kang

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

This study introduces an efficient process that combines a gas phase reaction method and nanoscale Kirkendall diffusion for the large-scale production of metal-oxide hollow nanopowders. Core-shell-structured NiO@SiO₂ nanopowders prepared by flame spray pyrolysis are transformed into hollow NiO@SiO₂ nanopowders via a nanoscale Kirkendall diffusion process. The SiO₂ coating layer plays a key role in preventing the sintering and growth of the Ni or NiO nanopowders during the preparation process. The mean size of hollow core and shell thickness of the hollow NiO nanopowders are 11 and 7 nm, respectively. At a current density of 0.5 A g^-1, the NiO@SiO₂ nanopowders with hollow and filled structures exhibit 100th cycle discharge capacities of 885 and 338 mA h g^-1, respectively. In addition, the hollow NiO@SiO₂ nanopowders, which exhibit low charge transfer resistances and fast Li-ion diffusion rates, also show better cycling and rate performance than the nanopowders with filled structures.

Original language	English
Pages (from-to)	5461-5471
Number of pages	11
Journal	Ceramics International
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2015.12.092
Publication status	Published - 2016 Mar 1

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korea Government (MEST) ( NRF-2015R1A2A1A15056049 ).

Publisher Copyright:
© 2016 Elsevier Ltd and Techna Group S.r.l.

Keywords

Flame spray pyrolysis
Kirkendall diffusion
Lithium ion battery
Nickel oxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ceramint.2015.12.092

Cite this

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title = "Design and synthesis of metal oxide hollow nanopowders for lithium-ion batteries by combining nanoscale Kirkendall diffusion and flame spray pyrolysis",

abstract = "This study introduces an efficient process that combines a gas phase reaction method and nanoscale Kirkendall diffusion for the large-scale production of metal-oxide hollow nanopowders. Core-shell-structured NiO@SiO2 nanopowders prepared by flame spray pyrolysis are transformed into hollow NiO@SiO2 nanopowders via a nanoscale Kirkendall diffusion process. The SiO2 coating layer plays a key role in preventing the sintering and growth of the Ni or NiO nanopowders during the preparation process. The mean size of hollow core and shell thickness of the hollow NiO nanopowders are 11 and 7 nm, respectively. At a current density of 0.5 A g-1, the NiO@SiO2 nanopowders with hollow and filled structures exhibit 100th cycle discharge capacities of 885 and 338 mA h g-1, respectively. In addition, the hollow NiO@SiO2 nanopowders, which exhibit low charge transfer resistances and fast Li-ion diffusion rates, also show better cycling and rate performance than the nanopowders with filled structures.",

keywords = "Flame spray pyrolysis, Kirkendall diffusion, Lithium ion battery, Nickel oxide",

author = "Won, {Jong Min} and Kim, {Jong Hwa} and Choi, {Yun Ju} and Cho, {Jung Sang} and Kang, {Yun Chan}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korea Government (MEST) ( NRF-2015R1A2A1A15056049 ). Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and Techna Group S.r.l.",

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AU - Won, Jong Min

AU - Kim, Jong Hwa

AU - Choi, Yun Ju

AU - Cho, Jung Sang

AU - Kang, Yun Chan

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korea Government (MEST) ( NRF-2015R1A2A1A15056049 ). Publisher Copyright: © 2016 Elsevier Ltd and Techna Group S.r.l.

PY - 2016/3/1

Y1 - 2016/3/1

N2 - This study introduces an efficient process that combines a gas phase reaction method and nanoscale Kirkendall diffusion for the large-scale production of metal-oxide hollow nanopowders. Core-shell-structured NiO@SiO2 nanopowders prepared by flame spray pyrolysis are transformed into hollow NiO@SiO2 nanopowders via a nanoscale Kirkendall diffusion process. The SiO2 coating layer plays a key role in preventing the sintering and growth of the Ni or NiO nanopowders during the preparation process. The mean size of hollow core and shell thickness of the hollow NiO nanopowders are 11 and 7 nm, respectively. At a current density of 0.5 A g-1, the NiO@SiO2 nanopowders with hollow and filled structures exhibit 100th cycle discharge capacities of 885 and 338 mA h g-1, respectively. In addition, the hollow NiO@SiO2 nanopowders, which exhibit low charge transfer resistances and fast Li-ion diffusion rates, also show better cycling and rate performance than the nanopowders with filled structures.

AB - This study introduces an efficient process that combines a gas phase reaction method and nanoscale Kirkendall diffusion for the large-scale production of metal-oxide hollow nanopowders. Core-shell-structured NiO@SiO2 nanopowders prepared by flame spray pyrolysis are transformed into hollow NiO@SiO2 nanopowders via a nanoscale Kirkendall diffusion process. The SiO2 coating layer plays a key role in preventing the sintering and growth of the Ni or NiO nanopowders during the preparation process. The mean size of hollow core and shell thickness of the hollow NiO nanopowders are 11 and 7 nm, respectively. At a current density of 0.5 A g-1, the NiO@SiO2 nanopowders with hollow and filled structures exhibit 100th cycle discharge capacities of 885 and 338 mA h g-1, respectively. In addition, the hollow NiO@SiO2 nanopowders, which exhibit low charge transfer resistances and fast Li-ion diffusion rates, also show better cycling and rate performance than the nanopowders with filled structures.

KW - Flame spray pyrolysis

KW - Kirkendall diffusion

KW - Lithium ion battery

KW - Nickel oxide

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SN - 0272-8842

VL - 42

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JO - Ceramics International

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Design and synthesis of metal oxide hollow nanopowders for lithium-ion batteries by combining nanoscale Kirkendall diffusion and flame spray pyrolysis

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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