Ni/Co bimetallic flower-like metal–organic frameworks with enhanced performance for high-power energy storage applications

Illias Ntoukas; Rong Lan; Chiara  Milanese; Marc Walker; Scott W.  Donne; Alexander Roberts; Evangelos Gkanas

doi:10.1557/s43579-023-00501-8

Ni/Co bimetallic flower-like metal–organic frameworks with enhanced performance for high-power energy storage applications

Illias Ntoukas, Rong Lan, Chiara Milanese, Marc Walker, Scott W. Donne, Alexander Roberts, Evangelos Gkanas

Centre for E-Mobility and Clean Growth

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

3 Citations (Scopus)

Abstract

Metal–organic frameworks (MOFs) are promising materials for supercapacitors due to their surface area and tunable pore size. Pristine monometallic MOFs suffer from low conductivity. In this work, bimetallic Ni-rich/Co-MOFs were synthesized via a one-step solvothermal method. Various Ni2+ and Co2+ stoichiometric ratios were considered and their impact on MOF structure and electrochemical performance was evaluated. It was found that Co2+ substitution in the initial Ni-MOF structure enhanced the electrochemical properties, providing a specific capacitance of 1303 F g−1 (145 mAh g−1) at 1 A g−1, almost double than the monometallic Ni-MOF. An optimum stoichiometric ratio of (2)Ni:(1)Co was obtained.

Original language	English
Pages (from-to)	69-75
Number of pages	6
Journal	MRS Communications
Volume	14
Issue number	1
DOIs	https://doi.org/10.1557/s43579-023-00501-8
Publication status	Published - 21 Nov 2023

Funding

This work is partially financially supported by the Lloyds Registered Foundation (ICON Schemes), Reference 515432241.

Funders	Funder number
Lloyd’s Register Foundation	515432241

Keywords

Metal-organic framework
Energy storage
Ni
Co

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10.1557/s43579-023-00501-8

Cite this

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title = "Ni/Co bimetallic flower-like metal–organic frameworks with enhanced performance for high-power energy storage applications",

abstract = "Metal–organic frameworks (MOFs) are promising materials for supercapacitors due to their surface area and tunable pore size. Pristine monometallic MOFs suffer from low conductivity. In this work, bimetallic Ni-rich/Co-MOFs were synthesized via a one-step solvothermal method. Various Ni2+ and Co2+ stoichiometric ratios were considered and their impact on MOF structure and electrochemical performance was evaluated. It was found that Co2+ substitution in the initial Ni-MOF structure enhanced the electrochemical properties, providing a specific capacitance of 1303 F g−1 (145 mAh g−1) at 1 A g−1, almost double than the monometallic Ni-MOF. An optimum stoichiometric ratio of (2)Ni:(1)Co was obtained.",

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author = "Illias Ntoukas and Rong Lan and Chiara Milanese and Marc Walker and Donne, {Scott W.} and Alexander Roberts and Evangelos Gkanas",

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T1 - Ni/Co bimetallic flower-like metal–organic frameworks with enhanced performance for high-power energy storage applications

AU - Ntoukas, Illias

AU - Lan, Rong

AU - Milanese, Chiara

AU - Walker, Marc

AU - Donne, Scott W.

AU - Roberts, Alexander

AU - Gkanas, Evangelos

PY - 2023/11/21

Y1 - 2023/11/21

N2 - Metal–organic frameworks (MOFs) are promising materials for supercapacitors due to their surface area and tunable pore size. Pristine monometallic MOFs suffer from low conductivity. In this work, bimetallic Ni-rich/Co-MOFs were synthesized via a one-step solvothermal method. Various Ni2+ and Co2+ stoichiometric ratios were considered and their impact on MOF structure and electrochemical performance was evaluated. It was found that Co2+ substitution in the initial Ni-MOF structure enhanced the electrochemical properties, providing a specific capacitance of 1303 F g−1 (145 mAh g−1) at 1 A g−1, almost double than the monometallic Ni-MOF. An optimum stoichiometric ratio of (2)Ni:(1)Co was obtained.

AB - Metal–organic frameworks (MOFs) are promising materials for supercapacitors due to their surface area and tunable pore size. Pristine monometallic MOFs suffer from low conductivity. In this work, bimetallic Ni-rich/Co-MOFs were synthesized via a one-step solvothermal method. Various Ni2+ and Co2+ stoichiometric ratios were considered and their impact on MOF structure and electrochemical performance was evaluated. It was found that Co2+ substitution in the initial Ni-MOF structure enhanced the electrochemical properties, providing a specific capacitance of 1303 F g−1 (145 mAh g−1) at 1 A g−1, almost double than the monometallic Ni-MOF. An optimum stoichiometric ratio of (2)Ni:(1)Co was obtained.

KW - Metal-organic framework

KW - Energy storage

KW - Ni

KW - Co

U2 - 10.1557/s43579-023-00501-8

DO - 10.1557/s43579-023-00501-8

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SN - 2159-6859

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JO - MRS Communications

JF - MRS Communications

IS - 1

ER -

Ni/Co bimetallic flower-like metal–organic frameworks with enhanced performance for high-power energy storage applications

Abstract

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Keywords

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