Covalent organic framework based microspheres as an anode material for rechargeable sodium batteries

Bidhan Chandra Patra; Sabuj Kanti Das; Arnab Ghosh; Anish Raj K; Parikshit Moitra; Matthew Addicoat; Sagar Mitra; Asim Bhaumik; Santanu Bhattacharya; Anirban Pradhan

doi:10.1039/C8TA04611E

Covalent organic framework based microspheres as an anode material for rechargeable sodium batteries†

Bidhan Chandra Patra,

^a Sabuj Kanti Das,‡^b Arnab Ghosh,

‡^c Anish Raj K,‡^c Parikshit Moitra,

^d Matthew Addicoat,^e Sagar Mitra,

*^c Asim Bhaumik,

*^b Santanu Bhattacharya*^a and Anirban Pradhan

*^a

Author affiliations

* Corresponding authors

^a Director's Research Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
E-mail: msap5@iacs.res.in, director@iacs.res.in

^b Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
E-mail: msab@iacs.res.in

^c Department of Energy Science and Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai, Maharashtra 400076, India
E-mail: sagar.mitra@iitb.ac.in

^d Technical Research Centre, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India

^e School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, UK

Abstract

Covalent organic frameworks (COFs) promise several benefits as materials in terms of gas adsorption, for use in optoelectronic devices, etc. However, the energy storage ability of COFs has not been well studied, especially in sodium batteries. In this report, for the first time, a covalent organic framework (COF), TFPB-TAPT COF, is used as an anode with high capacity in sodium batteries. The TFPB-TAPT COF exhibits an initial reversible capacity of 246 mA h g⁻¹ and a capacity of 125 mA h g⁻¹ is retained after 500 cycles. The TFPB-TAPT COF further exhibits Na⁺ ion storage capability at different current rates. The Na⁺ ion storage viability of the TFPB-TAPT COF arises mainly because of its open ordered nanoporous framework, which provides reversible accommodation for ions. This work opens up a promising new approach for further utilization of COFs as electrode materials in rechargeable sodium batteries.

Journal of Materials Chemistry A

Covalent organic framework based microspheres as an anode material for rechargeable sodium batteries†

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