Abstract
This master’s thesis explores the utilization of polymer composites to create a device that combines energy storage and structural support, enabling the integration of additional energy storage capacity into existing structures. The research aims to identify a suitable polymer composite that can effectively serve this dual role. By strategically composing the polymer composite, the study seeks to strike a balance between energy storage capabilities and structural integrity. Additionally, the research investigates the use of plasticizers to enhance the efficiency and performance of the dual-function device. Through an in-depth exploration and analysis of polymer composites, this thesis contributes to the advancement of innovative solutions for energy storage and structural integration. The findings hold significant implications for diverse industries, including electronics, transportation, and infrastructure. The outcomes of this research pave the way for a more sustainable and energy-efficient future, leveraging the potential of polymer composites to optimize energy storage while providing essential structural support. The first part of this thesis focuses on the exploration and characterization of a solid solution-based tough polymer electrolyte that has received limited attention in previous research. Through this characterization process, a deeper understanding of the interaction between lithium salt and the polymer matrix, as well as the resulting energy shift in functional chains, is gained. Furthermore, the investigation reveals that the residual solvent from the casting procedure significantly influences the mechanical and electrochemical performance of the composite. In this study, water is specifically chosen as the main solvent, and a thorough purge of the remaining solvent is conducted during an additional step. The observations indicate that a solvent that effectively integrates with both salt and polymer matrix yields better mechanical properties. Additionally, it is predicted that this solvent selection may lead to improved electrochemical performance. Detailed explanations and discussions regarding these findings will be presented in subsequent chapters and conclusions. The second part of this thesis is dedicated to the creation of an electrode composite. The concept behind this approach is relatively straightforward. The goal is to incorporate a sufficient amount of electrode material into the polymer electrolyte composite to reduce the electron conductive pathway and increase the surface area for ion accumulation, thereby facilitating the formation of an electric double layer. Carbon materials are chosen for this purpose due to their inert nature and compatibility with the carbon atoms present in the polymer matrix. By introducing an adequate quantity of carbon material into the composite matrix, the electron’s requirement for quantum tunneling (or electron hopping) is significantly reduced. Consequently, the electric conductivity of the electrode material falls within the acceptable range, facilitating efficient charge transfer within the composite system. The third and final part of this thesis involves integrating the findings from the first two parts to create an energy storage device. The impact of water adsorption on both mechanical and electrochemical properties is further investigated in this context. The aim is to understand how water influences the performance of the composite in terms of its mechanical strength and electrochemical characteristics. Additionally, a practical demonstration is conducted to illustrate the feasibility of such a device. This demonstration serves to showcase the potential applications and viability of the developed energy storage system.