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Abstract

This work investigates potential cathode and anode materials for lithium-ion batteries with respect to their physical and electrochemical properties. The focus lies on novel triphenylamine-based polymers (FTN-Pol) as cathode materials, as well as photo-enhanced charging using the spinel LiMn2O4 as cathode. Additionally, the suitability of hybrid organic–inorganic perovskites (HOIPs), particularly MAPbBr3, as anode materials is studied. Physical characterization is conducted using X-ray diffraction and scanning electron microscopy, while electrochemical properties are assessed via cyclic voltammetry, galvanostatic cycling, and chronoamperometry. Electrochemical analysis of the FTN-Pol system demonstrates that N-heterotriangulenes provide a redox-active and electrochemically stable backbone for polymeric cathodes. The rigid spirocyclic structure promotes high redox site accessibility while minimizing side reactions. While FTN-Pol exhibit limited specific capacity due to the high molecular weight of the redox unit, it achieves 87% utilization of its theoretical capacity, a Coulombic efficiency of 99.6 %, and stable long-term cycling performance. Studies on the LiMn2O4 spinel reveal that light exposure enhances electrochemical performance by increasing charge extraction and accelerating reaction kinetics. Controlled experiments confirm that these effects are primarily attributable to photonic interactions with the electronic structure of the material, such as improved charge carrier mobility, rather than solely to thermal effects. The investigation of HOIP-based anodes indicates current limitations in terms of chemical stability, electrolyte compatibility, and long-term cycling durability. Nevertheless, under controlled conditions, redox activity and photoinduced effects can be observed, suggesting potential for niche applications or further research.