Work

Impact of nanotube length on electrical properties in PEMFCs: A coupled stochastic and numerical study for sustainable mobility

Year: 2025

Type: article

Abstract: The decarbonization of the mobility sector is essential to reduce the negative impacts of global warming. For this transition, the development of advanced materials such as nanocomposites is necessary. These highly functional materials can be used in various next generation applications, like catalyst support in PEM fuel cells, which is the scope of this study. Stochastic and numerical modeling techniques are combined to investigate the percolation behaviour, an important factor influencing functional properties like electrical and thermal conductivity, in heterogeneous nanocomposites composed of irregularly shaped nanotubes. The analysis focuses in particular on the impact of nanotube length. To manage the high computational demands arising from the multiscale nature of these materials, a unit cell approach is employed. The findings show that the nanotube length has a significant effect on percolation behaviour, enabling the tailoring of functional properties for specific applications.

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/epjconf/202533403011/pdf

Authors: Fabian Gumpert, Dominik Eitel, Uta Helbig, Jan Lohbreier

Institutions: Georg Simon Ohm University of Applied Sciences Nuremberg, University of Technology Nuremberg

Language: English

Topic: Fuel Cells and Related Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft