The lowest cost, highest performance battery separators in the world

Transcription

1 The lowest cost, highest performance battery separators in the world

2 Who we are A growth phase company with strong global partners utilizing a unique technology and a tightly targeted strategy to revolutionize industrial energy storage and delivery Founders Two former CEOs with >60 years of advanced materials experience Manufacturing R&D $2 billion global paper company with products for capacitors and lead acid batteries and capacity for >200 million m 2 /year. 30 year battery and supercap veteran 75-year old paper R&D institution Sales Sales offices in Korea, China and the Netherlands. Highly skilled team averaging 30+ years of experience.

3 Dreamweaver Technology Nanofiber on microfiber spider-web-on-tinkertoy Nanofibers form good barrier Microfibers give open structure good window Microfibers also add strength Has potential to be thinnest high temperature separator in the world

4 Silver : A unique combination of properties Look & feel of paper Fast roll-to-roll processing No stretch, bow or skew Fast wet out Very fast, uniform High thermal stability <2% shrinkage up to 200 C Open structure High rate capability Increased cycle life

5 Thickness (microns) Product Target Thickness & Porosity Zinc Air Alkaline Target Porosity Silver AR: 60% (Low ESR, Supercaps) Silver: 55% (High Rate LIBs) Gold: 48% (High Energy Density LIBs) Basis Weight (g/m 2 ) Silver AR Target Thickness Silver Target Thickness Gold Target Thickness Silver AR Products Silver Products Gold Prototypes

6 Market Overview Lithium Ion NCM SEPARATOR MARKET, TOTAL $2.3 B Lithium Ion NCA Lithium Primary Alkaline Primary Alkaline Metal Ni MH, NiCad Supercapacit or Lithium Ion LFP Lithium Primary Lithium Ion NCA Lithium Ion NCM Lithium Ion LMO Lithium Ion LCO Lithium Ion LFP Supercapacitor Growth Rate Last Market Segments (Auto) Next Market Segments (CE) Target Market Segments (Ind) Lithium Ion LMO Lithium Ion LCO Ni MH, NiCad Alkaline Metal Alkaline Primary 0.00% 5.00% 10.00% 15.00% 20.00% 25.00% 30.00% 35.00%

7 Supercapacitor Market Needs Low ESR Internal resistance turns into wasted energy Low cost Many applications are available at lower cost 2 nd supplier Most supercap manufacturers are frustrated with single supplier issues High capacity Increased energy density reduces weight and volume of supercaps Low self discharge Important for portable electronics, but not larger supercaps

8 Capacity (F/g) or ESR (Ohm) Supercapacitor Conclusions: Higher surface area & porosity make better capacitors Competitor Dreamweaver Supercapacitor Comparison Capacity ESR Leading Competitor 30micron Dreamweaver Silver AR30

9 Lithium Iron Phosphate Battery Needs No reduction in performance of battery Cell must be able to deliver all of the advantages of an LFP battery, including rate capability, cycle life, energy density Additional safety Lead acid batteries are not flammable; additional safety margin will allow LFP manufacturers to compete more effectively Low cost Lower cost will allow them to compete effectively with lead acid batteries in some very large applications

10 Voltage(V) Voltage(V) mah Voltage(V) LFP Cells: Full Cell Performance 3.2 Ah cells Production cells Li FePO cathode Drop-in separator replacement Equivalent at 1.6, 4.7 C DWI higher at 9.4 C Equivalent 25 C, 65 C cycling C Capacity(mAh) 4.7 C Capacity(mAh) DreamWeaver DreamWeaver Standard Standard DreamWeaver DreamWeaver Standard Standard C, 3.2A/5A Cycling Cycle Number DreamWeaver DreamWeaver Standard Standard C Capacity(mAh) DreamWeaver DreamWeaver Standard Standard

11 Flame Test: Saturated with Electrolyte

12 Voltage (V/V 0 ) Hot Box Tests 180 C Hot Box Test :00 05:00 10:00 15:00 20:00 Control V/Vo Silver V/Vo Gold V/Vo LFP cells Hot box test: 170, 180, 190 C Cells removed for safety when surface temp = 175 C Gold: voltage never fluctuates +/- 1% Silver: final voltage ~98% initial voltage Control: when surface temp = C, catastrophic failure Gold, Silver: working cells after cooldown Control: Cell failure after cooldown