121 documents found, page 1 of 13
Influence of active material content on the performance of direct ink printed l...
Pinto, Rafael S.; Hilliou, L.; Petrenko, Viktor; Costa, Carlos Miguel Silva; Lanceros-Mendez, S.; Gonçalves, Renato FerreiraDriven by the growing demand for small devices due to the Internet-of-Things concept, lithium-ion batteries (LIBs) represent an essential technology to store energy for portable electronics with specific sizes/requirements. The LIBs' performance is highly dependent on the electrodes' composition/microstructure, particularly the cathode. In this work, it is investigated the influence of different ratios between ...
Tailoring poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) memb...
Pinto, Rafael S.; Serra, João Pedro Cruz; Barbosa, João Carlos Pacheco; Silva, Maria Manuela; Salado, Manuel; Fidalgo Marijuan, Arkaitz; Amayuelas, EderNovel battery separators based on poly(vinylidene fluoride-co-trifluoroethylene-chlorofluoroethylene)- P(VDF-TrFE-CFE)- were produced by different processing techniques (non-solvent and thermally induced phase separation, salt leaching and electrospinning), in order to evaluate their effect on separator morphology, degree of porosity and pore size, electrochemical parameters and battery cycling behavior. It has...
Wool/soy protein isolate membranes as separators toward more sustainable lithiu...
Serra, J. P.; Barbosa, J. C.; Silva, Maria Manuela; Gonçalves, Renato Ferreira; Uranga, J.; Costa, Carlos Miguel Silva; Guerrero, P.; de la Caba, K.Natural origin products exist in large quantities around the world and many times they are not properly exploited in order to realize their potential in novel applications, being often even discarded as by-products from other uses. In this study, wool and soy protein isolate (SPI) are proposed to develop separator membranes for lithium-ion batteries (LIBs), aiming toward a new generation of sustainable batterie...
Solid electrolytes based on i-carrageenan and different ionic liquids for susta...
Polícia, R.; Serra, J. P.; del Campo, Francisco Javier; Vilas-Vilela, J. L.; Correia, Daniela M.; Costa, Carlos Miguel Silva; Lanceros-Méndez, S.The increase in electronic waste (e-waste) is a significant global concern due to fast technological development in which products rapidly become obsolete. To mitigate this problem in the field of electrochromic devices, four different types of solid polymer electrolytes (SPEs) were developed based on iota-carrageenan, a water-soluble biopolymer, and 40 wt% concentration of different ionic liquids (ILs): 1-buty...
Lithium-ion battery high performance cathode electrode based on LiFePO4 and the...
Monteiro, Inês F.; Pinto, Rafael S.; Silva, Maria M.; Fidalgo-Marijuan, Arkaitz; Costa, Carlos Miguel Silva; Lanceros-Mendez, S.The critical issue of thermal runaway events in lithium-ion batteries (LIBs) is recognized as a primary cause of battery-related accidents. Despite ongoing efforts to enhance LIB safety, challenges persist due to varying chemical compositions, states of charge, and conditions of use across different batteries. To advance battery safety and considering cost and practicality, this research introduces a novel cath...
Tailoring the electrical conductivity of Poly(vinylidene fluoride) by blending ...
Martins, Luis Amaro; Teruel Biosca, Laura; Sabater i Serra, Roser; Balado, Andreu Andrio; Gómez-Tejedor, José Antonio; Correia, Daniela M.In order to tailor dielectric response and electrical conductivity, novel polymer blends based on poly(vinylidene fluoride (PVDF) and different fillers composed by poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), and PEDOT:PSS/ionic liquids (ILs): PEDOT:PSS/N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide ([C2mpyr][FSI]) and PEDOT:PSS/N-ethyl-N-methylpyrrolidinium bis(trifluoromethane...
An interactive hybrid book integrating capacitive, piezoelectric, and piezoresi...
Gonçalves, Sérgio Abílio Pereira; Pereira, Nelson Miguel Macedo Silva; Costa, Carlos Miguel Silva; Branco, Pedro; Lanceros-Mendez, S.The arising of novel paradigms in human–computer interaction, including tangible user interfaces, shape-changing interfaces, or ubiquitous computing, is breaking down the boundary between physical and digital realms, leading to more natural and immersive forms of interaction. Advances in active and responsive smart materials allow to transform once inanimate objects, such as books, into actively responsive obje...
Enhanced performance of solid polymer electrolytes combining poly(vinylidene fl...
Macedo, V. M.; Barbosa, J. C.; Salazar, H.; Fidalgo-Marijuan, A.; Gajjala, R. K. R.; Almásy, L.; Gonçalves, B. F.; Petrenko, V. I.; Silva, M. M.The search for sustainable and high-performance materials for lithium-ion batteries is leading to significant advances in solid polymer electrolyte (SPE) technology. However, the current drawbacks of this approach prove the need for further research and development in the field. Herein, novel ternary solid polymer electrolytes have been developed using varying loads of MOF-808 metal-organic framework and [BMIM]...
Unveiling challenges and opportunities in silicon-based all-solid-state batteri...
Zhao, Mingcai; Zhang, Juan; Costa, Carlos Miguel Silva; Lanceros-Mendez, S.; Zhang, Qi; Wang, WeiLi-metal and silicon are potential anode materials in all-solid-state Li-ion batteries (ASSBs) due to high specific capacity. However, both materials form gaps at the interface with solid electrolytes (SEs) during charging/discharging, resulting in increased impedance and uneven current density distribution. In this perspective, the different mechanisms of formation of these gaps are elaborated in detail. For L...
Biodegradable and biocompatible collagen-based hybrid materials for force sensi...
Andonegi, Mireia; Meira, Rafaela Marques; Correia, Daniela M.; Pereira, Nelson Miguel Macedo Silva; Costa, Carlos Miguel Silva; Lanceros-Mendez, S.With the aim of replacing synthetic macromolecules by biological macromolecules for advanced applications, collagen films were produced with two different ionic liquids (ILs), choline dihydrogen phosphate ([Ch][DHP]) and choline serinate ([Ch][Seri]), added in order to modulate the electrical responses. The films were prepared by casting, varying IL content between 0 and 6 wt%. The morphology and thermal proper...