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Nuevo electrodo de alto rendimiento para desionización capacitiva

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20190702002
Publicado:
12/07/2019
Caducidad:
12/07/2020
Resumen:
Un instituto español de investigación sin ánimo de lucro ha desarrollado un electrodo rentable y de alto rendimiento para desionización capacitiva en el que la fase activa y el colector de corriente se incluyen en un solo elemento. La extraordinaria eficiencia se consigue gracias a la morfología de los electrodos híbridos, en los que las fibras de CNT (nanotubos de carbono) actúan simultáneamente como un colector de corriente flexible, material activo y soporte para el óxido metálico, es decir, la formación de redes de óxido de fibra-metal de CNT interconectadas. Esta arquitectura ofrece un alto rendimiento de capacitancia y reduce la resistencia interna. También evita la necesidad de utilizar costosos colectores de corriente resistentes a la corrosión por cloruros. El instituto de investigación busca socios con el fin de establecer acuerdos de licencia y cooperación en materia de investigación.

Details

Tittle:
New high performance electrode for capacitive deionization
Summary:
A non-profit Spanish research institute from Madrid has developed a cost-effective high-performance electrode for capacitive deionization in which the active phase and the current collector are included in a single element. The cooperation types are license and research cooperation agreements.
Description:
Electrode for capacitive deionization in which fabrics of CNT (carbon nanotube) fibres and metal oxides hybridise forming interconnected porous networks, thus comprising a single element, i.e. a hybrid material. The fabrication of electrodes is based on the continuous impregnation of CNT fibres with metal oxide precursors in-line as they are spun from the chemical vapour deposition reaction, followed by thermal treatment (350ºC). Consequently, the electrode of the present invention has a reduced contact resistance and improved charge capacitance which leads to more efficient capacitive deionization systems.
The hybrid electrode presents a better performance as a result of the synergistic effect between both components of the hybrid material, i.e. the CNT fibres and the metal oxide coating. The fibres of CNT constitute a flexible network that guarantees not only textural and electrochemical properties of interest for capacitive deionization but also, ensures such a high electrical conductivity, that allows to discard the use of expensive current collectors and thus to stablish a direct electrical contact between the electrode and the external power source.
They are looking for potential partners from the agrofood, environmental and materials sectors to establish license agreements, preferably industry, and research cooperation agreements also open to academic and other research organisations.
Advantages and Innovations:
The remarkable efficiency obtained is due to the morphology of the hybrid electrodes, in which the CNT fibres act simultaneously as a flexible current collector, active material and support for the metal oxide i.e. the formation of interconnected CNT fibre-metal oxide networks. Such architecture leads to high capacitance performance while minimizing internal resistance. It also gets rid of the need of using expensive chloride corrosion-resistant current collectors.
Large salt adsorption capacity of 6.5mg/g from brackish water (2.0gNaCl/L) and very high efficiency of 86%, which translates into a low energy consumption per gram of salt removed (~0.26Wh/g). This is an 80% improvement compared with reference devices based on traditional electrode architecture i.e. activated carbon as the active material and titanium foil current collectors.
Simple fabrication process that enables fabrication of large electrode samples. The high conductivity and flexibility in bending of the CNT fibrebased electrodes open the possibility to design the next generation of CDI devices based on current collector-free electrodes with complex non-planar shapes.
Stage of Development:
Under development/lab tested
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
Patent application

Partner sought

Type and Role of Partner Sought:
The research center is searching for potential partners from the agrofood, environmental and materials sectors to establish license agreements, preferably industry, and research cooperation agreements also open to academic and other research organisations.

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
Spanish

Keywords

Technology Keywords:
02007022 Conductive materials
10004007 Desalinización
02007021 Nanotubos de carbono
10004001 Tratamiento de aguas industriales