Nanoscale Hybrid Materials

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Electrodes for electrochemical devices have to fulfill several functions. First of all, they provide matrices for the active species, e.g. lithium in Li-ion batteries. Secondly, they conduct electrons as well as reaction species allowing the access of reactants and the exit of products. A material, which has been successfully applied as the support material in fuel cells and Li-ion batteries is the electroconducting polymer PANI. However, the effect of support morphology - leaving the chemistry unchanged - on the electrochemical performance has not been investigated in detail, so far.

In this project, electrospinning is used as a method to obtain (aligned) polymer fibre networks in a controlled way. These are carbonized and impregnated using different potential electrode materials in order to allow for an intimate contact between electron and Li conducting phase. Using this combination, cathode materials which are not suitable for an application due to their low intrinsic electronic conductivity shall be applied for Li-ion batteries. Sophisticated methods are used to unravel the interaction between the different phases and the microstructure of the electrode.

 

Dr. Sonia DsokeScientistTel: +49 (0721) 608 28501Mail: sonia.dsoke(at)kit.edu
ForschungsgruppeNanoscaled Hybrid Materials
Prof. Dr. Helmut EhrenbergPrincipal InvestigatorTel: +49 (0721) 608 26363 / 47915Mail: helmut.ehrenberg(at)kit.edu
ForschungsgruppeNanoscaled Hybrid Materials

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Preparation of electrodes by electrospinning

Electrodes for electrochemical devices have to fulfill several functions. First of all, they provide matrices for the active species, e.g. lithium in Li-ion batteries. Secondly, they conduct electrons as well as reaction species allowing the access of reactants and the exit of products. A material, which has been successfully applied as the support material in fuel cells and Li-ion batteries is the electroconducting polymer PANI. However, the effect of support morphology – leaving the chemistry unchanged – on the electrochemical performance has not been investigated in detail, so far.

In this project, electrospinning is used as a method to obtain (aligned) polymer fibre networks in a controlled way. These are carbonized and impregnated using different potential electrode materials in order to allow for an intimate contact between electron and Li conducting phase. Using this combination, cathode materials which are not suitable for an application due to their low intrinsic electronic conductivity shall be applied for Li-ion batteries. Sophisticated methods are used to unravel the interaction between the different phases and the microstructure of the electrode.

(images will be uploaded shortly)

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A specific filter for this group’s publications is not yet available. Please take a look at „publications“ in the website’s header for now.

Mitglieder
Dr. Sonia DsokeScientistTel: +49 (0721) 608 28501Mail: sonia.dsoke(at)kit.edu
ForschungsgruppeNanoscaled Hybrid Materials
Prof. Dr. Helmut EhrenbergPrincipal InvestigatorTel: +49 (0721) 608 26363 / 47915Mail: helmut.ehrenberg(at)kit.edu
ForschungsgruppeNanoscaled Hybrid Materials
Forschung

(images will be uploaded shortly)

Preparation of electrodes by electrospinning

Electrodes for electrochemical devices have to fulfill several functions. First of all, they provide matrices for the active species, e.g. lithium in Li-ion batteries. Secondly, they conduct electrons as well as reaction species allowing the access of reactants and the exit of products. A material, which has been successfully applied as the support material in fuel cells and Li-ion batteries is the electroconducting polymer PANI. However, the effect of support morphology – leaving the chemistry unchanged – on the electrochemical performance has not been investigated in detail, so far.

In this project, electrospinning is used as a method to obtain (aligned) polymer fibre networks in a controlled way. These are carbonized and impregnated using different potential electrode materials in order to allow for an intimate contact between electron and Li conducting phase. Using this combination, cathode materials which are not suitable for an application due to their low intrinsic electronic conductivity shall be applied for Li-ion batteries. Sophisticated methods are used to unravel the interaction between the different phases and the microstructure of the electrode.

Equipment

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Zusammenarbeit

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A specific filter for this group’s publications is not yet available. Please take a look at „publications“ in the website’s header for now.

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