Publicação
Design and Implementation of Sensors for Monitoring Battery Materials
| Resumo: | In an increasingly technological world, energy storage devices like batteries have become indispensable. Among the most widely used options are Lithium-Ion Batteries (LIBs), valued for their high storage capacity and long lifespan. However, the volatility of specific components and the various degradation mechanisms to which they are subjected must be considered. Thus, continuous, real-time monitoring of the interior of batteries, mainly the electrolyte, is essential to ensure their safety and extend their lifespan. This study proposes two designs for a sensor: a simpler one consisting of a spiral inductor and another with an additional capacitive component. These sensors are easily manufacturable using titanium and copper deposited on a glass substrate. The sensors were electrically characterised using a vector network analyser, measuring the S11 parameter over a frequency range from 0.4 GHz to 3 GHz. The analysis focused on changes in the resonance peak amplitudes with temperature variation (from 10 °C to 70 °C) and in contact with solid and liquid electrolytes. The results revealed that the antenna responds to higher frequencies than the LC sensor. In both sensors, amplitude exhibited more significant variation, with a growing difference between the maximum peak amplitude relative to the reference peak amplitude (at 10 °C) as temperature increased. Furthermore, both sensors demonstrated their ability to respond to electrolyte changes induced by temperature variations. For battery applications, the antenna design proved to be more promising. |
|---|---|
| Autores principais: | Simões, Rita Adão |
| Assunto: | LC sensor Resonance peaks Lithium-ion batteries (LIBs) Solid electrolyte Liquid electrolyte |
| Ano: | 2023 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| Resumo: | In an increasingly technological world, energy storage devices like batteries have become indispensable. Among the most widely used options are Lithium-Ion Batteries (LIBs), valued for their high storage capacity and long lifespan. However, the volatility of specific components and the various degradation mechanisms to which they are subjected must be considered. Thus, continuous, real-time monitoring of the interior of batteries, mainly the electrolyte, is essential to ensure their safety and extend their lifespan. This study proposes two designs for a sensor: a simpler one consisting of a spiral inductor and another with an additional capacitive component. These sensors are easily manufacturable using titanium and copper deposited on a glass substrate. The sensors were electrically characterised using a vector network analyser, measuring the S11 parameter over a frequency range from 0.4 GHz to 3 GHz. The analysis focused on changes in the resonance peak amplitudes with temperature variation (from 10 °C to 70 °C) and in contact with solid and liquid electrolytes. The results revealed that the antenna responds to higher frequencies than the LC sensor. In both sensors, amplitude exhibited more significant variation, with a growing difference between the maximum peak amplitude relative to the reference peak amplitude (at 10 °C) as temperature increased. Furthermore, both sensors demonstrated their ability to respond to electrolyte changes induced by temperature variations. For battery applications, the antenna design proved to be more promising. |
|---|