Microwave-assisted hydrothermal synthesis of nanocrystal β-Ni(OH)2 for supercapacitor applications

Abdelnaby M. Elshahawy; Kuan Hung Ho; Yating Hu; Zhen Fan; You Wei Benedict Hsu; Cao Guan; Qingqing Ke; John Wang

doi:10.1039/c6ce00329j

Microwave-assisted hydrothermal synthesis of nanocrystal β-Ni(OH)₂ for supercapacitor applications

Abdelnaby M. Elshahawy, Kuan Hung Ho, Yating Hu, Zhen Fan, You Wei Benedict Hsu, Cao Guan, Qingqing Ke, John Wang

National University of Singapore

科研成果: 期刊稿件 › 文章 › 同行评审

44 引用（Scopus）

摘要

Nanocrystalline β-Ni(OH)₂ was successfully synthesized by a microwave assisted hydrothermal process. The effects of different surfactants/additives, such as cetyltrimethylammoniumbromide (CTAB) as a cationic surfactant, sodium dodecyl sulfate (SDS) as an anionic surfactant and ethylendiamine (EDA) and polyvinylpyrrolidone (PVP), on the resultant structure, morphology, specific surface area and electrochemical performance, were investigated. The crystallinity of β-Ni(OH)₂ was shown to play a dominate role in the electrochemical performance. The nanocrystalline β-Ni(OH)₂ derived from CTAB showed a ∼1566 F g^-1 high specific capacitance at 1 A g^-1 in 6 M KOH (1958 F g^-1 based on the mass of β-Ni(OH)₂) and 91% retention after 1000 charge-discharge cycles at 10 A g^-1. The excellent electrochemical performance is attributed to the well-defined nanocrystallinity of the hexagonal β-Ni(OH)₂ nanoplates.

源语言	英语
页（从-至）	3256-3264
页数	9
期刊	CrystEngComm
卷	18
期	18
DOI	https://doi.org/10.1039/c6ce00329j
出版状态	已出版 - 2016
已对外发布	是

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title = "Microwave-assisted hydrothermal synthesis of nanocrystal β-Ni(OH)2 for supercapacitor applications",

abstract = "Nanocrystalline β-Ni(OH)2 was successfully synthesized by a microwave assisted hydrothermal process. The effects of different surfactants/additives, such as cetyltrimethylammoniumbromide (CTAB) as a cationic surfactant, sodium dodecyl sulfate (SDS) as an anionic surfactant and ethylendiamine (EDA) and polyvinylpyrrolidone (PVP), on the resultant structure, morphology, specific surface area and electrochemical performance, were investigated. The crystallinity of β-Ni(OH)2 was shown to play a dominate role in the electrochemical performance. The nanocrystalline β-Ni(OH)2 derived from CTAB showed a ∼1566 F g-1 high specific capacitance at 1 A g-1 in 6 M KOH (1958 F g-1 based on the mass of β-Ni(OH)2) and 91% retention after 1000 charge-discharge cycles at 10 A g-1. The excellent electrochemical performance is attributed to the well-defined nanocrystallinity of the hexagonal β-Ni(OH)2 nanoplates.",

author = "Elshahawy, {Abdelnaby M.} and Ho, {Kuan Hung} and Yating Hu and Zhen Fan and Hsu, {You Wei Benedict} and Cao Guan and Qingqing Ke and John Wang",

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AU - Elshahawy, Abdelnaby M.

AU - Ho, Kuan Hung

AU - Hu, Yating

AU - Fan, Zhen

AU - Hsu, You Wei Benedict

AU - Guan, Cao

AU - Ke, Qingqing

AU - Wang, John

PY - 2016

Y1 - 2016

N2 - Nanocrystalline β-Ni(OH)2 was successfully synthesized by a microwave assisted hydrothermal process. The effects of different surfactants/additives, such as cetyltrimethylammoniumbromide (CTAB) as a cationic surfactant, sodium dodecyl sulfate (SDS) as an anionic surfactant and ethylendiamine (EDA) and polyvinylpyrrolidone (PVP), on the resultant structure, morphology, specific surface area and electrochemical performance, were investigated. The crystallinity of β-Ni(OH)2 was shown to play a dominate role in the electrochemical performance. The nanocrystalline β-Ni(OH)2 derived from CTAB showed a ∼1566 F g-1 high specific capacitance at 1 A g-1 in 6 M KOH (1958 F g-1 based on the mass of β-Ni(OH)2) and 91% retention after 1000 charge-discharge cycles at 10 A g-1. The excellent electrochemical performance is attributed to the well-defined nanocrystallinity of the hexagonal β-Ni(OH)2 nanoplates.

AB - Nanocrystalline β-Ni(OH)2 was successfully synthesized by a microwave assisted hydrothermal process. The effects of different surfactants/additives, such as cetyltrimethylammoniumbromide (CTAB) as a cationic surfactant, sodium dodecyl sulfate (SDS) as an anionic surfactant and ethylendiamine (EDA) and polyvinylpyrrolidone (PVP), on the resultant structure, morphology, specific surface area and electrochemical performance, were investigated. The crystallinity of β-Ni(OH)2 was shown to play a dominate role in the electrochemical performance. The nanocrystalline β-Ni(OH)2 derived from CTAB showed a ∼1566 F g-1 high specific capacitance at 1 A g-1 in 6 M KOH (1958 F g-1 based on the mass of β-Ni(OH)2) and 91% retention after 1000 charge-discharge cycles at 10 A g-1. The excellent electrochemical performance is attributed to the well-defined nanocrystallinity of the hexagonal β-Ni(OH)2 nanoplates.

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Microwave-assisted hydrothermal synthesis of nanocrystal β-Ni(OH)2 for supercapacitor applications

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Microwave-assisted hydrothermal synthesis of nanocrystal β-Ni(OH)₂ for supercapacitor applications