Development Trends For Large Capacity Lithium-Ion Batteries

Transcription

1 Development Trends For Large Capacity Lithium-Ion Batteries materials, components and production methods of new lithium-ion technology Leclanché Volker Drünert, Dipl.-Ing., MBA Senior Manager 3rd International Congress Advanced Battery Technologies 23 June, 2010, Wiesbaden, Germany

2 Table of contents 01 Overview of Leclanché Materials and components of lithium ion cells Production of large format lithium ion cells Test results on various cell technologies Battery applications Summary 2

3 01 Overview of Leclanché Willstätt Cell production Founded in 1909 in Yverdon-les- Bains Transformation from traditional battery manufacturer to a leading developer and manufacturer of lithium ion batteries through the integration of Bullith Batteries in 2006 International sites: Willstätt, Germany Separator & electrode production Large format lithium ion cell production Yverdon-les-Bains, Switzerland Headquarters Sales & Marketing Development & Engineering Battery pack production Integration into application Yverdons-les-Bains Headquarters, Development, System Assembly 3

4 02 Materials and components of lithium ion cells Electrodes: Two materials each available for anode and cathode. The combination of different materials enable Leclanché to tailor each cell to the customers requirement, i.e. power, capacity or long cycle life, without compromising on the main feature: safety Leclanché Separator: Core technology element assuring safety features Ceramic based Thermally stable to high temperatures Flexible, designed for lamination assembly on machinery Anode Material Suited for Graphite Power & Capacity Titanate Long cycle life Cathode Material Suited for Mixed metal oxides Capacity Lihium Iron Phosphate Power Bi-cell 2 µm Lamination of separators to anode roll Magnifications of the Leclanché Separator 4

5 03 Production of large format lithium ion cells Flow Raw materials Slurry Coating Rolls Production: roll-to-roll lamination process Customized cell design for specific client specifications High flexibility in choice of raw materials Floorplan Anode belt Bi-cell Stacking Drying EL-Filling Formation Final sealing Packaging 6. Formation and final sealing 4. Drying 3. Cell stacking and assembly 5. Electrolyte filling 1. Anode assembly 2. Bicell assembly 5

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7 04 Test results: NCA/Ti % of initial capacity NCA/Titanate cells cycling at 1 C at RT Cycling between 2.8 V and 1.8 V full DOD Full capacity measurement every cycle % % 95.00% 90.00% 85.00% 80.00% 75.00% 70.00% 65.00% 60.00% 55.00% 50.00% 45.00% 40.00% 35.00% 30.00% 25.00% 20.00% 15.00% 10.00% 5.00% 0.00% ~90% capacity remaining after 3000 full cycles Cycle # 7

8 04 Test results: NCA/Ti % of initial capacity NCA/Titanate cells cycling at 1 C at 45 C Cycling between 2.8 V and 1.8 V full DOD Capacity measurement every 10th cycle % 95.00% 90.00% 85.00% 80.00% 75.00% 70.00% 65.00% 60.00% 55.00% 50.00% 45.00% 40.00% 35.00% 30.00% 25.00% 20.00% 15.00% 10.00% 5.00% 0.00% More than 90% of capacity remaining after 3500 full cycles Cycle # 8

9 04 Test results: LFP/Ti % of initial capacity LFP/Titanate cell cycles at 1C and at RT and full DOD Charge at CCCV to 2.3V and C/10 and discharge at CC to 1.5V % 95.00% 90.00% 85.00% 80.00% 75.00% 70.00% 65.00% 60.00% 55.00% 50.00% 45.00% 40.00% 35.00% 30.00% 25.00% 20.00% 15.00% 10.00% 5.00% 0.00% More than 90% capacity remaining after almost 4000 full cycles Cycle # 9

10 05 Industrial applications form basis of Li-Ion business Applications Benefits Existing technologies are to be replaced with new Li-Ion batteries New mobile applications become feasible by integrating lightweight high-performance batteries Leclanché already active in these markets 10

11 05 Large hybrid Diesel solutions will be driven by economical rational Applications Benefits Battery supports diesel engine by recouping part of the braking energy Significant fuel savings for end customer Economic rationale will drive this market as opposed to pure green thinking 11

12 05 Grid applications for power balancing are a future necessity Applications Benefits Limitations on the use of renewable energy with existing grid Large format Li-Ion cells are ideal for buffering systems in individual households Political support will accelerate this transition 12

13 05 E-Mobility is expected to drive long term market growth Applications Benefits All major OEM s are working on initiatives to introduce hybrid or full electrical vehicles New technologies will further improve performance of Electrical Vehicles Tremendous market potential once the applications and the infrastructure have been fully developed 13

14 06 Summary Expertise: Leclanché has been developing large format lithium ion since a long time Cycle life of titanate well adapted for EV applications System integration know-how facilitates market access Project management focused on batteries and system Production: Running automated roll-to-roll lamination production process allowing manufacturing cost reduction Safety: Assured by Leclanché Separator (No smoke, fire or rupture were observed at all abuse tests) One-stop-shopping: Leclanché integrates on demand the battery cells into customized power solution. Thus enabling fast time-to-market. 14

15 Thank you very much for your attention Leclanché S.A. Avenue des Sports Yverdon-les-Bains Switzerland Phone: +41 (24) Fax: +41 (24) Volker Drünert: Leclanché Industriestr Willstätt Germany Phone: +49 (7852) Fax: (7852)