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HELIS - High energy lithium sulphur cells and batteries

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EGVIA - ERTRAC 1st European Conference Results from Road Transport Research in H2020 projects
29 November 2017 to 30 November 2017
Brussels

Published in: Automotive
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HELIS - High energy lithium sulphur cells and batteries

  1. 1. This project has received funding from the [European Union’s Horizon 2020 research and innovation programme under grant agreement No 666221 HELIS High energy lithium sulphur cells and batteries Robert Dominko National Institute of Chemistry, Slovenia
  2. 2. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ HELIS administrative information 4 Alistore – ERI laboratories (http://alistore.eu/ ) 14 partners from 7 countries – 2 large enterprises, 3 SMEs, 3 knowledge transfer institutions and 6 research laboratories.
  3. 3. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ HELIS administrative information Type of action Project budget EU Funding Project Start-End CP – collaborative project € 7.97 M € 7.97 M 1st June 2015 31st May 2019 EC Call NMP-17-2014: Post-lithium ion batteries for electric automotive applications Partners SAFT SAS, PSA, Solvionic, Picosun, Accurec, INERIS, CNRS, IREQ, Chalmers University, Fraunhofer, Tel Aviv University, Munster University, Max Planck, NIC Target & Deliverables - Energy density, power, durability, ageing, safety, battery packs, recycling, modeling, scale up of components from EUROLIS Overall Approach M1, Kick off meeting M2. Prototypes for ageing study M3. Improved prototypes (separator) M5.Improved prototypes (protected lithium) October 2018 June 2015 October 2017 June 2016
  4. 4. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ HELIS administrative information
  5. 5. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ Engineered cathode composite (WP3) - Need for adjusted porosity for selected electrolyte - Electrode engineering (role of mesopores) - TRL level 4 (typical laboratory batch 2kg) Cathode composite engineering and development Approach Approach: - Scale up of components - New binders - Mechanisms (Li2S formation) - Optimization of electrodes Results achieved: - 4 mgS/cm2 electrode loading - New binders - Understanding role of pores - Li2S formation (different morphology) Activities & Status 0 10 20 0 200 400 600 800 1000 1200 1400 dischargecapacity/mAhg -1 cycle number 0,90 0,92 0,94 0,96 0,98 1,00 coulombicefficiency 4mgS/cm 2 loading 6mL/gS sulphur:electrolyte ratio
  6. 6. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ Electrolytes and additives (WP4) - Study of polysulphide solubility versus solvent properties - Design of electrolyte - TRL level 4-5 (selected electrolyte composition prepared for prototype cells) Cathode composite engineering and development Approach 1 M LiTFSI TFEE:DOL electrolyte TFEE - 1,2-(1,1,2,2-tetrafluoroethoxy)ethane 0 200 400 600 800 1000 1200 1400 1.5 2.0 2.5 3.0 10.0 µL/mg S U/VvsLi/Li+ Specific capacity / mAh/gS 6.5 µL/mg S 0 10 20 30 40 0 500 1000 1500 6.5 µL/mgS capacity 10 µL/mgS capacity 6.5 µL/mgS efficiency 10 µL/mgS efficiency Dischargecapacity/mAh/gS cycle number 0.2 0.4 0.6 0.8 1.0 coulombicefficiency
  7. 7. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ Lithium anode and separators (WP5) - Lithium surface protected with artificial „SEI“ - Ion selective separators (blocking polysulphides) - TRL<3 (by end of project we plan prepare larger quantities of protected lithium) Lithium anode and separators Approach Li (We) Separator Li (Ce) Artificial „SEI“ – F-graphene 2.3µL/cm2
  8. 8. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ Lithium anode and separators (WP5) - Celgard separator coated with Al2O3 by ALD - Different coating thickness - Other elements are in testing procedure ALD coated separators Approach Activities & Status 0 10 20 30 40 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 cycle No. 2 layers Cel. 2320 layer Cel.2320+ 8.5nm Al2 O3 coating layer Cel.2320+ 21nm Al2 O3 coating layer Cel.2320+ 43nm Al2 O3 coating Capacity/mAh/g Picosun 21nm Picosun 43 nmPicosun 8.5nm
  9. 9. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ Modelling-based assessment and optimization of components and cells (WP6) - Structural and operational modelling of composite cathodes; - Atomistic/molecular modelling of polysulfide/electrolyte interactions (solubility, diffusion, migration, etc.); - Physical modelling of cells and ageing mechanisms Inter-particle region Mesoporous region Objectives
  10. 10. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ - Incorporation of components into 3 different generations of prototypes . - D-size cells produced at SAFT - TRL 4 Prototypes and battery packs Approach Activities & Status Prototypes (WP7) Capacity > 3 Ah, but high amount of electrolyte (6 mL/gS)
  11. 11. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ - Safety tests (nail penetration, overheating, overcharge, short-circuit); - Failure mechanism (post-mortem analysis); - Study of gas evolution. Stability test on a D-size cell Safety tests (WP8) 0 10 20 30 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 T+ TS1 TS2 T- Temperature(°C) Time (h) -0,5 0,0 0,5 1,0 1,5 2,0 2,5 Voltage Thermal stability test Initial weight : 69.5 g Final weight : 53.5 g à Loss of 16% Initial length : 60 mm Final length : 66 mm à Increase of 10% Objectives
  12. 12. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ - Modelling and design of dedicated recycling process for Li-S cells and battery packs ; - Installation and test of process on a technical scale Stability test on a D-size cell Recycling (WP9) Input (S) Residue (S) Sulfur separated 100% 8% 92% Sulphur separation efficiency Input: Li-S battery (from SAFT) 400°C, 1-2 mbar, 1 h Residue Input Residue Condensate Loss (gas) 100% 67% 3% 30% Mass balance: Objectives
  13. 13. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ Indicator Units used Project objective Current achievements Energy density Wh/kg 500 Wh/kg 200 Wh/kg Cycle life years 5 years or 1000 cycles > 100 cycles Power W/kg Charging at 2C 1C charging Price EUR/kWh <150 / safety / Safe Needs to be improved
  14. 14. This work has been supported by EU projects HELIS (H2020-NMP-17-2014) grant agreement No 666221 http://www.helis-project.eu/ - Engineering of carbon host matrix (based on modelling); - New electrolytes • Low quantity • High safety - Modified separators - Data obtained from safety and ageing tests - Recycling procedure - Lithium metal protection? Impact

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