Summary of the technology
The subject of the offer is a method of manufacturing of carbon-based composites for electrode materials. These composites are built of electrode active phase nanoparticles (e.g. metallic or metal oxides) and a carbon matrix obtained from bacterial biomass. Living organisms serve both as the component capable to capture the nanoparticles, and as a source of biocarbon support providing high dispersion and stabilization of nanoparticles, as well as high electrical conductivity of the material. Application: electrocatalytic active electrode materials, e.g. in ORR reactions; energy storage (supercapacitors).
Description of the technology
In recent years, due to the widespread application opportunities, functional composite materials made of nanoparticles deposited on carbon material have attracted great interests of both academia and practical scientists. It is well-known that the activity of electrode materials is affected by chemical nature, morphology, dispersion of active phase nanoparticles, and the features of the carbon support itself. However, the methods of synthesis of this type of systems are multistage and require the use of environmentally harmful precursors. The key issue is to develop the high-quality electrode material, with highly controlled physicochemical properties i.e. good electrical contacts at the interface of nanoparticles and carbon matrix.
The newly developed method of manufacturing of composite materials based on bacterial biomass has been proposed. The main idea of the solution is the use of microorganisms of various sizes, morphology and elemental composition for the preparation of 2D and 3D composites.
The specific features of microorganisms, related to the electric charge of their cell walls are employed for the capture of nanoparticles. The ultimate composite (carbon material-nanoparticles of active phase) is obtained by the pyrolysis of cells decorated with adsorbed nanoparticles. Tuning the parameters of the fabrication process, allow obtaining desired carbon matrix composition and the form of 3D or 2D systems.
The vital advantages of the technology:
- facile procedure of manufacturing of carbon support with a various share of graphitic/amorphous carbon;
- ease of tailoring of the characteristics of ultimate 2D or 3D composite materials;
- possibility of doping of the composite with a chosen element, based on the natural ability of its accumulation by bacteria;
- no need to use additional chemicals e.g. binders or solvents.
The offered solution is a subject of a patent application. The development of the invention was conducted by the scientific staff of the Faculty of Chemistry of the Jagiellonian University. Currently, the Centre for Technology Transfer CITTRU is looking for entities interested in licensing and application of the technology described above.
Intellectual property status
Patent already applied for
Patent application number : P426130 (29.06.2018)
Where : Patent Office of the Republic of Poland
Desired business relationship
Centre Technology Transfer CITTRU
Technology Transfer Office