VTI National Transport Research Database

Beräkningar och experiment på nya material för litiumbatterielekrolyter

  • Chalmers tekniska högskola AB, Universitet eller högskola, 556479-5598
Sponsors, duration, budget: Energimyndigheten ; 2009-01-01 -- 2012-10-31 ; 2700000 kronorRegistration number:
  • Energimyndigheten 2009000896
Subject(s): Abstract: Det aktuella projektet bidrar med ökad förståelse av de begränsade mekanismerna för nya elektrolytmaterial och slutligen med optimerade material och driftsparametrar för framtida litiumjonbatterier. Genom att gå över till el- och elhybridfordon finns en stor potential att minska koldioxidutsläppen från transportområdet. Ett genombrott på bred front för el- och hybridfordonsteknik kräver god tillgång på kraftfulla, säkra, miljöanpassade och billiga batterier.Abstract: To meet increasing global demands for energy, renewable energy sources with negligible environmental impact must be developed, such as solar, wind, and wave energy. Clean ways of storing and using the energy produced are also needed. Here rechargeable lithium batteries are in focus both for large-scale applications to store energy from renewable sources as well as for future electric and hybrid electric vehicles. For example, hybrid technology may use ~30% less energy in urban environment (~8% on the highway).While already outperforming other battery concepts in capacity, lithium batteries are too expensive or not considered safe for large-scale use, often due to problems originating in the electrolytes or electrolyte/electrode interphases. Therefore will the reseacher here aim at developing new electrolyte materials, salts and solvents, by integrating experimental and computational techniques with synthesis, in order to gain insight into molecular level prerequisites for desired electrolyte properties. The long-term goal is to tailor electrolytes for specific applications and conditions. Today, the reseach group can via ab initio computations together with Raman or IR spectroscopies, monitor properties of importance for electrolyte usage on a molecular level e.g. salt dissociation, electrochemical stability etc. Furthermore, the strategy of ab initio prediction of anions suitable for electrolytes, and subsequent synthesis of the lithium salts, will be used to obtain new battery electrolyte salts.
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