C/Si Composite Anodes for Advanced Lithium Ion Batteries

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Activated Carbons for Ultracapacitors• PI: Dr. Steven Dietz• Low-cost production from sugar precursors• Larger voltage window than current carbons;2.85 V vs 2.7 VCapture regenerative brakingenergy in hybrid and fuel cellvehiclesLoad level in cars and electronic,reducing wear on the battery,improving power system stabilityand reducing weight• Faster charge / discharge (lower internalresistance)• Tailored pores allow liquid access to all thecarbon’s surface area• Joint development agreement forultracapacitors with MeadWestvaco• Under evaluation by Maxwell Technologiesand othersDevelopment funded by DOE, NSFProprietary – TDA ResearchTDAR e s e a r c h
Engineered Pore-SizeOptimizes PerformanceProprietary – TDA ResearchTDAR e s e a r c h
Page 1 and 2: NASA Battery WorkshopHuntsville, AL
Page 3 and 4: TDA Research, Inc.www.tda.comWheat
Page 5: History of Commercial SuccessTDA’
Page 9 and 10: Silicon as an Anode• 4200 mAh/g c
Page 11 and 12: Si/C Composites+ xLi+-xLi +SiLi x S
Page 13 and 14: Synopsis of Work EffortThere were t
Page 15 and 16: Started with Control CarbonsFired a
Page 17 and 18: Process Conditions Changed toReduce
Page 19 and 20: Initial Si-nano Controls AlsoShowed
Page 21 and 22: Dispersion of NanoSi Resultedin The
Page 23 and 24: Carbon Stabilized Si CapacityCapaci
Page 25 and 26: Type 2 Carbon Has BetterCapacity Fa
Page 27 and 28: Power is Dependent onLoading Level
Page 29 and 30: Cycle Life Will Be Focus ofFuture E
Page 31 and 32: Economic Analysis FavorsLarger Part
Page 33: Thanks to NASA JSC for FundingNASA

C/Si Composite Anodes for Advanced Lithium Ion Batteries

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