Invited Presentation: Innovative Batteries for Sustainable Mobility
2014; Institute of Physics; Volume: MA2014-04; Issue: 1 Linguagem: Inglês
10.1149/ma2014-04/1/120
ISSN2152-8365
Autores Tópico(s)Advanced Battery Technologies Research
ResumoThe rapid economic growth, the ever-increasing populations and the increase in the number of vehicles have accelerated the consumption of fossil fuels in the world; automobile industries are now expected to tackle with reduction of CO 2 emissions by developing vehicles driven by sustainable energy sources such as hybrid vehicles (HVs), plug-in hybrid vehicles (PHVs), electric vehicles (EVs) and fuel-cell hybrid vehicles (FCHVs). Since Toyota Motor Corporation introduced the first-generation Prius in 1997, we have sold more than 3 million HVs with 17 models all over the world, reducing CO 2 emissions by 14 million tons (as of May 2010). And now, we are going to develop next-generation vehicles with more energy efficiency; for this reason we need to develop innovative batteries with higher energy densities than traditional batteries. Figure 1 represents a rough sketch of Ragone plots for traditional Ni-MH and Li-ion batteries together with next-generation batteries such as all-solid-state batteries and Li-air batteries. Although we have already developed prototype cells of all-solid-state batteries and Li-air batteries with energy densities of 400 Wh/L and 1000 Wh/L, respectively, it is also true that there are still many issues to be overcome until their practical application. In the presentation, we will overview our recent effort on developing innovative batteries.
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