Encontrados 6 documentos, a visualizar página 1 de 1
EIS diagnostics of aged Li-ion batteries
Plancha, Maria João; Luz, Paulo P. da; Rangel, C. M.High-power batteries with long cycling life and adequate storage behaviour are needed as energy sources devices for (hybrid) electric vehicles and lithium-ion rechargeable cells are the most promising candidates. In this work, Li-ion cells with a nominal capacity of 10 Ah were studied. Electrochemical impedance spectroscopy (EIS) was used for studying the cycling ageing effect on discharge capacity fade. EIS me...
Environmental impact assessment of the penetration of hydrogen technologies in ...
Travassos, Maria Antónia; Sá, A. I. Correia de; Luz, Paulo P. da; Rangel, C. M.Road traffic is one of the transportation sectors with faster growth and also one of the most important emitters of greenhouse gases (GHGs). In this work, an analysis of the environmental benefits resulting from the introduction of hydrogen on road transport in Portugal is made. Impact is analyzed mainly looking at the pollutant emissions provided by road transport at the point of use. Emissions associated to r...
Environmental impact of road transport in Portugal and effects of hydrogen tech...
Travassos, Maria Antónia; Sá, A. I. Correia de; Luz, Paulo P. da; Rangel, C. M.Road traffic is one of the transportation sectors with faster growth due to the of vehicle fleets increase and a strong investment in road infrastructure and also one of the most important emitters of greenhouse gases (GHGs).With introduction, in this sector, of a new renewable fuel, like hydrogen, a reduction of the reported pollutant is foreseen. In this work, an analysis of the environmental benefits resulti...
Penetration of hydrogen technologies: study on the environmental impact of road...
Travassos, Maria Antónia; Sá, A. I. Correia de; Luz, Paulo P. da; Rangel, C. M.Road traffic is one of the transportation sectors with faster growth and also one of the most important emitters of greenhouse gases (GHGs). In this work, an analysis of the environmental benefits resulting from the introduction of hydrogen on road transport in Portugal is made. Impact is analyzed mainly looking at the pollutant emissions provided by road transport at the point of use. Emissions associated to r...
Comportamento electroquímico do aço galvanizado em estruturas de suporte de mas...
Nogueira, R.; Rangel, C. M.; Luz, Paulo P. da; Estanqueiro, AnaO reconhecimento do potencial da energia eólica como fonte de electricidade limpa e de baixo custo, tem criado a necessidade de reavaliar materiais candidatos a integrar em estruturas para a medição da velocidade e direcção do vento. Neste trabalho, o comportamento electroquímico de aço galvanizado à quente utilizado em estruturas metálicas utilizadas para avaliar potencial eólico foi avaliado em ambientes co...
Fuel cell and hydrogen storage development for a wheel chair
Rangel, C. M.; Silva, V.; Luz, Paulo P. da; Franco, Alexandra; Azevedo, F.; Bosukov, L.In this paper are presented, the recent advances of a demonstration project that focuses on the implementation of a hybrid system for a wheel chair incorporating a fuel cell and a metal hydride hydrogen storage system. Advantages regarding weight reduction and greater autonomy are emphasized, apart from the use of clean energy and the drastic reduction in charging time, when compared with the system before conv...
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