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Técnica de electrohilado para fabricar baterías de li-ion flexible

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOIT20170126001
Publicado:
01/03/2017
Caducidad:
01/03/2018
Resumen:
Un grupo de investigación italiano que trabaja en ciencias físicas y químicas y ciencia y tecnología de materiales, con especial interés en materiales para aplicaciones en energía, está desarrollando electrodos para fabricar baterías de li-ion flexible mediante electrohilado, una técnica sencilla y versátil para la síntesis de materiales nanoestructurados de una dimensión con área superficial muy específica. El grupo de investigación busca socios con el fin de establecer acuerdos de investigación o financiación para la síntesis de los electrodos a gran escala y ensamblaje del prototipo de las baterías de li-ion.

Details

Tittle:
Flexible lithium-ion batteries (F-LIBs) by the use of electro-spinning (ES) technique
Summary:
An Italian research group is developing electrode materials for the fabrication of F-LIBs (Flexible lithium-ion batteries) by the use of electro-spinning (ES), a simple and versatile technique for the synthesis of one-dimensional nanostructured materials endowed with high specific surface area. The research group is looking for a research cooperation agreement and/or a financial agreement allowing for the electrode material synthesis on a larger scale and the F-LIB prototype assembly.
Description:
A research group of a South Italy based university operates in the field of physical and chemical sciences, materials science and technology, with particular interest in materials for energy applications. The group´s expertise covers the fields of growth of nanostructured materials for applications in energy storage and conversion, catalysis, photo-catalysis and sensing and their analysis by various characterisation techniques. In particular, the research group has expertise in the fields of the synthesis by ES and the analysis of nanostructured materials by Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy. One of the researchers of the team has been working in the field of LIBs for several years and is now studying graphene-based hetero-structures to be used as electrode materials in F-LIBs. A research group of a Germany based university electrochemically tests these materials.

Lightweight, large capacity, high rate capability and cyclic stability are the basic requirements for LIBs. Flexibility is further needed to meet the increasing demand for wearable/bendable electronic devices. Common electrode materials are in the form of powders, which requires the use of binders and hinders the preparation of F-LIBs. The Italian research group is working on the production of all the components needed for the fabrication of a F-LIB prototype by the use of ES technique. Presently, the group is able to synthesise, via ES, self-supporting and flexible fibrous mats to be used as electrodes in F-LIBs on a laboratory scale (namely, for coin cells).

Concerning the F-LIB development, the research group is looking for investors who finance the acquisition of new part-time researchers and instrumentation for the synthesis of electro-spun electrode materials on a larger scale. The research group is also willing to sign a research cooperation agreement, in order to participate, as research partners, in projects, which allow them acquiring the human and instrumental resources needed for the synthesis of electro-spun electrode materials on a larger scale and the assembly of a F-LIB prototype.

The tasks of the Italian research group in the research projects is related at that concerns the fabrication of nano-microfibrous products, their characterization (physico-chemical, electrical, and mechanical properties). Then the role of research partners should be devoted at the application of nanofibers produced by electrospinng in different fields as well as composite materials, energy efficiency, water filtration, biomedical applications.
Advantages and Innovations:
The research group is working on the production of all the components needed for the fabrication of a F-LIB prototype by the use of ES. The advantages of the electrospinning technique to nanofiber production is related to:
- high surface area to volume ratio of spun nanofibers;
- a wide variety of materials for the nanofibers production;
- the possibility of nanofibers deposition onto other substrates;
- the development of different nanofibrous structure, as well as, tubular nanofibrous structure, yarns and 3D blocks of nanofibers.
Carbon matrixes in the form of non-woven fibrous membranes exhibiting capacities comparable to that of graphite can be successfully prepared by ES. The open and loose structure of the electro-spun membranes favours Li+ diffusion and strain accommodation. In addition, the large surface to volume ratio of the fibres translates into higher electrode-electrolyte contact area. Therefore, encapsulating nano-sized oxide particles within a three-dimensional network of electro-spun carbon fibres allows remarkably improving the performances of LIBs. Outstandingly, self-standing paper-like fibrous membranes synthesised by ES need neither binders nor metal substrates as current collectors, and, what is more, are flexible. Reduction of the inactive weight of the batteries and flexibility are of crucial importance in manifold applications including aerospace, transportation and portable electronics, and open the way to the development of wearable/foldable electronics.
Stage of Development:
Under development/lab tested
IPs:
Other

Partner sought

Type and Role of Partner Sought:
Financial agreements
The research group is looking for investors who finance the acquisition of new part-time researchers and instrumentation for the synthesis of electro-spin electrode materials on a larger scale and the assembly of a F-LIB prototype.

Research cooperation agreements
The research group is willing to participate, as a research partner, in projects, which allow it synthesising electro-spin electrode materials on a larger scale and finally assembling a F-LIB prototype.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
Italian

Keywords

Technology Keywords:
02007005 Composite materials
04001003 Storage of electricity, batteries
03004004 Tecnología e ingeniería eléctrica / aparatos eléctricos