Microwave-assisted synthesis of platelet-like cobalt metal-organic framework, its transformation to porous layered cobalt-carbon nanocomposite discs and their utilization as anode materials in sodium-ion batteries. (February 2020)

• Record Type: Journal Article
• Authors: Skoda, David; Kazda, Tomas; Munster, Lukas; Hanulikova, Barbora; Styskalik, Ales; Eloy, Pierre; Debecker, Damien P.; Vilcakova, Jarmila; Cech, Ondrej; Simonikova, Lucie; Kanicky, Viktor; Kuritka, Ivo
• Is Part Of: Journal of energy storage. Volume 27(2020)
• Publication Date: 2020-02
• Subjects: Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2019.101113
• Languages: English
• ISSNs: 2352-152X

Abstract

Highlights: Facile microwave-assisted synthesis of platelet-like cobalt MOF material reported. Co-MOF annealing in N2 provided porous and magnetic Co@carbon nanocomposite. Homogeneous Co@carbon nanocomposite with unique morphology of layered discs achieved. Co-MOF and Co@carbon nanocomposite used as anode materials in Na-Ion batteries. High performance, low irreversible capacity, and low capacity drop per cycle observed. Abstract: In this work a facile microwave-assisted synthesis of a platelet-like cobalt-based metal-organic framework (MOF) material is presented. This material was synthesized from cobalt(II) acetylacetonate and biphenyl-4, 4′-dicarboxylic acid (Bpdc) in N, N'-dimethylformamide at 160°C. As-prepared Co-Bpdc MOF product with a platelet-like disc architecture was transformed by heat treatment in a nitrogen atmosphere at 800°C to porous cobalt-carbon nanocomposite discs. It is demonstrated that this synthetic strategy allows for obtaining magnetic microporous carbon layered discs with homogeneously incorporated metallic cobalt nanoparticles with a size of ca. 4 nm. The Co-C nanocomposite material was characterized by a variety of physico-chemical methods. It is shown that both Co-Bpdc MOF and Co-C nanocomposite were electrochemically active in sodium battery system as a material for the negative electrode. The high capacity retention over 80% and capacities over 200 mAh g –1 in the sodium-ion battery systems have been achieved. Graphical abstract: Image, graphical abstract