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

Title: Ni/Co bimetallic flower-like metal–organic frameworks with enhanced performance for high-power energy storage applications
Creator: Ntoukas, Ilias; Lan, Rong; Milanese, Chiara; Walker, Marc; Donne, Scott W.; Roberts, Alexander J.; Gkanas, Evangelos I.
Relation: MRS Communications Vol. 14, Issue 1, p. 69-75
Publisher Link: http://dx.doi.org/10.1557/s43579-023-00501-8
Publisher: Springer
Resource Type: journal article
Date: 2024
Description: 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.
Subject: Co; energy storage; metal-organic framework (MOF); Ni
Identifier: http://hdl.handle.net/1959.13/1499022
Identifier: uon:54595
Identifier: ISSN:2159-6859
Language: eng
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