Microparticles with hetero-nanointerfaces: controlled assembly of cobalt hydroxide and nickel hydroxide nanoclusters towards improved electrochemical functions
Journal of Materials Chemistry A Volume 7
Page 25290-25296
published_at 2019-09-04
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Title ( eng ) |
Microparticles with hetero-nanointerfaces: controlled assembly of cobalt hydroxide and nickel hydroxide nanoclusters towards improved electrochemical functions
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Creator |
Tokudome Yasuaki
Jobbágy Matías
Soler-Illia Galo J. A. A.
Takahashi Masahide
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Source Title |
Journal of Materials Chemistry A
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Volume | 7 |
Start Page | 25290 |
End Page | 25296 |
Abstract |
The ultimate control of the interfaces of nanocomposite materials is essential to tailor and improve their physical/chemical properties in applications such as catalysis, or energy storage or production. Fabrication and co-assembly of a variety of nanostructured colloids is a promising way to design the interface of materials in nano-scale toward high functionality. In this study, we demonstrate a synthesis of colloids of nanocluster-sized (~ 2 nm) cobalt and nickel hydroxides and their assembly into microparticles that present hetero-nanointerfaces. Electrochemical properties were investigated to elucidate the effect of the hetero-nanointerface. Microparticles with hetero nanostructures composed of cobalt and nickel hydroxide nanoclusters revealed improved mass specific capacity (91.4 mAh/g) compared with respective microparticles with homo-nanointerface (cobalt hydroxide; 15.8 mAh/g: nickel hydroxide; 64.4 mAh/g). Further investigation suggests that the introduced hetero-nanointerface leads to lower charge transfer resistance and to improved electrochemical properties. The synthetic concept demonstrated here is expected to create unique hetero-nanointerfaces for various materials with wide-range of chemical composition towards improved and novel functionalities.
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Descriptions |
The present work is partially supported by JSPS KAKENHI, LNLS proposal SAXS1 18927, ANPCyT (PICT 2087), UBACyT (20020130100610BA), Izumi Science and Technology Foundation (H29-J-130) and the Foundation for the Promotion of Ion Engineering.
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Language |
eng
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Resource Type | journal article |
Publisher |
Royal Society of Chemistry
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Date of Issued | 2019-09-04 |
Rights |
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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Publish Type | Author’s Original |
Access Rights | open access |
Source Identifier |
[ISSN] 2050-7496
[DOI] 10.1039/C9TA07141E
[DOI] https://doi.org/10.1039/C9TA07141E
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