Silisium Fremtidens materiale Energiseminaret NMBU 2017 Sverre Sørensen
Dynatec nettverk 144 ansatte 325 mill Nok Etablert 1987
Vinner av innovasjonsprisen 2016
Silisium – det nest vanligste grunnstoffet i jordskorpen Men for bruk i solcelle og elektronikk kreves 99,9999999 % renhet
Chemical vapor deposition (CVD) Heat Gaseous by-products SiH4 Si (bulk) Decomposition reactor H2 H2 Solid products (støv/fines) Filtvedt et al (2012). SOLMAT, 107, 188–200
Dagens metoder 1958 1960 Purity Dust Porosity Crystallinity Bell-Jar reactor Siemens Fluidized bed E. I. du Pont 1958 US 3.042.494 1960 US 3.012.861 High Cost High Quality Low Cost Low Quality Purity Dust Porosity Crystallinity Filtvedt et al (2010). SOLMAT, 94, 1980–1995
Sentrifugeprinsipp Silane (SiH4) er 16 ganger tyngre enn hydrogen (H2)
The Dynatec reactor Patented The first design difference was to get rid of the cooled surfaces. The reactor is heated at the wall and the whole reactor is built as a centrifuge. When the heavy silane molecule is injected is goes directly to the wall where is decomposes and deposits the silicon. The light hydrogen is efficienly pushed back to the center of the reactor and exits. Patented
Forskning på Dynatecreaktor INDUSTRIPILOT UNDER UTVIKLING Prosjekt påbegynt i 2008, 2 prototyper er bygd og testet, samarbeid med IFE, støttet av Forskningsrådet
Resultater fra testene Tradisjonell metode: 70-120 kWh/kg DYNATEC-metode: 3 kWh/kg Fagliteratur sier: ca 0,3 mm pr time DYNATEC-reaktor: 12 mm pr time Prod.kost. Trad: ca 22 $ pr kg Prod.kost. DYNATEC: ca 11 $ pr kg < 3,5 kwh/kg > 95% yield > 100 μm/min linear growth < 0,4% fines 100% silane concentration
Silisium som batterimateriale < 3,5 kwh/kg > 95% yield > 100 μm/min linear growth < 0,4% fines 100% silane concentration
Storage capacity for diferent elemetns Silisium anode Storage capacity for diferent elemetns Silicon film Big (>200nm) Silicon particles IFEs tunge kompetanse innen silisium, reaktorteknologi og batterikompetanse. Smaal (<200 nm) Silicon particles
Sentrifuge Heat Gaseous by-products SiH4 Si (bulk) Decomposition reactor Gaseous by-products Si (bulk) Solid products (støv/fines) Heat
20-30 % bedre batterikapasitet