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Chemical Design of Redox-Bipolar Covalent Organic Frameworks as High Energy Density Cathodes for Li-ion Batteries

Project description

Increasing the energy density of redox-active covalent organic framework cathodes

Developing sustainable, high-energy rechargeable batteries is a challenge in storing energy from renewable sources. Although Lithium-ion batteries (LIBs) are promising due to their superior performance, their energy density needs improvement. Covalent Organic Frameworks (COFs) are promising electrode materials, but new design strategies are required to increase their capacity and voltage. Supported by the Marie Skłodowska-Curie Actions (MSCA) programme, the BipoCOFs project aims to develop high-energy-density cathodes by creating two-dimensional redox-bipolar COFs. This involves combining n-type and p-type moieties within the same COF. The project also aims to optimise electrode conductivity and ion diffusion. It merges the fields of organic batteries and COFs, covering synthetic organic chemistry, polymer chemistry, and materials science, and aims to further develop energy storage.

Objective

The development of sustainable rechargeable batteries with high energy density is one of the main current challenges to efficiently store energy from renewable sources. Among them, lithium-ion batteries (LIBs) are the most promising due to their superior performance. While conventional inorganic LIBs present limited energy density and problems associated with the availability of critical raw materials, electroactive organic materials are an attractive alternative due to their tunable electrochemical properties and resource availability.
In particular, Covalent Organic Frameworks (COFs) have emerged as promising electrode materials, but in order to extend their applicability, their energy density requires to be increased. In general, n-type based COFs can lead to high specific capacities while p-type based COFs exhibit higher working potentials (>3 V vs Li/Li+). Thus, new design strategies to increase simultaneously the capacity and voltage are required.
This project (BipoCOFs) aims to develop high energy density cathodes based on the construction of two-dimensional (2D) redox-bipolar COFs by combining n-type and p-type moieties within the same COF. In addition, the bipolar COFs will be exfoliated to improve ion diffusion and conductivity of the electrodes will be optimized in order to maximize the electrochemical performance. This project will implement a complex training in synthesis and exfoliation of redox-bipolar COFs in the host group combined with fabrication of COF-based buckypaper electrodes during the secondment to address the ambitious scientific objectives.
BipoCOFs will merge the fields of organic batteries and COFs, encompassing synthetic organic chemistry, polymer chemistry, and materials science. The achieved results will lay the foundations for further development and provide the necessary tools to guide the molecular design of new advanced organic electrodes and generate transferable knowledge in the field of energy storage.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2023-PF-01

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Coordinator

UNIVERSIDAD DE SANTIAGO DE COMPOSTELA
Net EU contribution
€ 181 152,96
Address
COLEXIO DE SAN XEROME PRAZA DO OBRADOIRO S/N
15782 Santiago De Compostela
Spain
Region
Noroeste Galicia A Coruña
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)