Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Smart construction of polyaniline shell on Fe2O3 as enabling high performance anode toward flexible lithium-ion battery
A novel Fe?O?@CC (carbon cloth) composite, encapsulated in a polyaniline (PANI) shell and further enhanced by nitrogen doping, is developed to form a core–shell structure. The carbon framework provides robust electrical conductivity, while the nitrogen doping introduces additional active sites for lithium-ion interaction and improves electrochemical performance. This flexible electrode design not only enhances ion diffusion but also delivers structural integrity, making it highly suitable for high-performance energy storage applications. The flexible properties of PANI effectively adapt to the volume change of Fe2O3 during the cycling process. The assembled battery Fe2O3@CC-PANI-30 core–shell nanowire arrays provides a capacity of 768.5 mA h g?1 after 100 cycles at 100 mA g?1. Even after 800 cycles at 500 mA g?1, it provides 468.3 mA h g?1 capacity. The N-doped PANI layer not only improves conductivity but also alleviates the volume expansion of Fe?O? during charge–discharge processes, reducing mechanical stress and enhancing cycling stability. Notably, the PANI coating, enriched with N heteroatoms, introduces numerous defects that create ample channels for efficient Li? transport. This synthetic approach, leveraging nitrogen doping to boost both electronic and ionic conductivity, provides valuable insights for designing integrated flexible electrodes, offering a significant improvement over Fe?O? and Fe?O?@CC systems without nitrogen modification.
» Publication Date: 11/11/2024
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
