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Description
When mesoporous carbon materials come into contact with electrolyte solutions, interactions at their surfaces can lead to the spontaneous formation of electrical potentials. Even without applying an external voltage, differences in surface properties can drive charge separation and ion rearrangement at the solid–liquid interface. When two materials with distinct surface characteristics are combined, these effects can generate a measurable electrical response, offering potential for energy harvesting applications.
This work presents a theoretical and experimental investigation of the factors influencing such spontaneous potential differences. A modeling approach is introduced and supported by experimental observations across different material treatments and electrolyte conditions. Synchrotron-based techniques are used to gain qualitative insight into ion distribution profiles within the porous structures during filling, and how this behavior relates to the observed electrical signals. The study is aimed at providing a broader understanding of ion–surface interactions in porous materials and exploring their relevance for emerging electrochemical energy concepts.
| Country | Germany |
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