what are the options for li-ion batteries after automotive use are the options for li-ion...
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EVS28KINTEX, Korea, May 3-6, 2015
What are the options for Li-ion batteries after automotive use?
Hakim IDJIS 1,2, D. Attias1,2, A. Ghaffari1, J-C. Bocquet1
1Industrial Engineering Laboratory, Ecole Centrale Paris, Grande Voie des Vignes, 92290 Châtenay-Malabry, France, [email protected]
2 Armand Peugeot Chair
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Introduction
I. Motivations for the recovery of EV batteries
1. A mandatory recycling rate: 50% of battery weight.
2. The use of valuable and potentially scarce materials: Nickel, Cobalt and lithium
3. Batteries have a residual value after automotive end-of-life,
4. Material mining has an impact on the EV life-cycle-assessment.
5. The recovery value chain is emerging
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Characterization of Li -ion battery recovery
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Battery technology
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Pack, Block Module Cells
AnodeCathodeSeparator
Electrolyte
Li +
Casing
Al Cu
graphite
2 Technologies are considered:NMC: Li(Ni 1/3Mn1/3Co1/3)O2 (Reference technology)LFP: LiFePO4 (substituting technology)
� Packaging� Cooling system� Battery Management System � Modules ≈ Cells
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Li-ion battery recovery options
• Remanufacturing: Repair of failed batteries in the same configuration for automotive reuse
• Repurposing: Refurbishing of EOL batteries in a different configuration for 2nd life use (stationary energy storage, captive fleets …)
• Recycling: several processes are available5
End-Of-Life
Remanufacturing
Recycling
Repurposing
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Recycling processes
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Disas-sembly
MechanicalConditioning
Hydro-metallurgy
Pyro-metallurgy
Hydro-metallurgy
Disas-sembly
Co Ni
Fe Cu
P1
P2
Li Co
Ni Cu
Al + Cu, Steel
Plastics
Black mass
Al + Cu, Steel
Plastics
Cells
Own(Kwade, 2010)(Sangwan et Jindal, 2012)
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Assessment of the recovery options
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Recycled materials revenue
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Based on reference batteries : NMC - Li(Ni 1/3Mn 1/3Co1/3)O2 batteries
• Recycling revenue = 1450 €/t
• Co, Ni, Cu = 90% of revenue
• Marginally maximum increase in revenue: + 30 €/t
Battery evolution
• Manganese enrichment (Ni0,1Mn0,8Co0,1): Revenue = 700 - 750 €/t
• Nickel enrichment (Ni0,8Mn0,1Co0,1): Revenue = 1530 €/t
• Shift to LFP (LiFePO4) : Revenue = 400 - 450 €/t
P2
e
P1
e
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Contribution of materials (P1)
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Recycling rate = 58%
Revenue = 1450€/t
• Active materials (Ni, Mn, Co) contribute only to 17% of the recycling rate• With the exception of lithium, the materials considered to be potentially critical
(Ni, Co, Cu) are already recycled. • 10 times lithium price increase� +5% in recycling revenue• Similar conclusions for P2
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P1 : Disassembly + Mechanical conditioning + Hydrometallurgy• Assuming the financial data provided in the Lithorec project (Hoyer et al., 2014).
100% NMC batteries. The profitability of P1 is estimated
• It is likely that Recycling will be a net cost, even higher with battery technology evolution and the inclusion of collection cost
P2: Disassembly + Pyrometallurgy + Hydrometallurgy• The difference between P2 & P1 is the operation of pyrometallurgy instead of
mechanical conditioning. Pyrometallurgy requires higher investments.• Recycling revenue being the same, same conclusion for P2 � Recycling will be a
net cost for OEMs.10
Recycling profitability and cost for OEMs
Recycling cost (without collection cost) � Cost for OEM
25% 50% 100%
Pay back period: 8 - 10 y
Internal Rate of Return : 15 - 20% ( -1 000 €/t) ( - 350 €/t) (- 60 €/t)
Pay back period: 5 - 7 y
Internal Rate of Return : 20 - 30% ( - 1500 €/t) ( - 700 €/t) ( - 300 €/t)
Starting activity intensityP1 (Disassembly + Mechanical
Cond. + Hydrometallurgy)
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Repurposing
• Repurposing: Refurbishing of EOL batteries in a different configuration for 2nd
life use (stationary energy storage, captive fleets …)
• Repurposing is at stage of development in research projects and OEM’s initiatives
• Analysis of the profitability of repurposing with the following assumptions:
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Data For a 16 kWh battery For 1 t Source
Initial Investment 22 711 701 €
Max capacity kWh / y 80 000 5 000 ≃ 1 000 t
Variable cost€/kWh 15€-30€ 240€ – 480€ 1 200€ -2 400€ Neubauer et a l ., (2012)
New Bat price €/kWh 250€ - 400€ 4 000€ - 6 400€ 20 000€ - 32 000€
Average in l i terature
Repurposed Bat
price €/kWh
=New * 30%
75€ - 120€ 1 200€ - 2 000€ 6 000€ -9 600€
Neubauer et a l ., (2012),
(2013)
Collection cost €/kWh 19 € 300 € 1 500 € Estimation
Standridge and Corneal ,
(2014)
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Repurposing
• Results:
• If new battery price drops under 300 €, repurposing is not profitable � Starting from 2020 – 2025, it is not reasonable to invest in repurposing
• Max cap 80 000 kWh ≃ 1 000 t of batteries � Volume is less an issue for repurposing
• When repurposing is profitable (IRR >= 15%), minimum revenue is 60€ kWh (3 500 € / t) � Repurposing can pay for recycling and reduce overall battery price
New Repur. 15 € 20 € 25 € 30 €
250 € 75 € 7% 5% 2% -2%
270 € 81 € 10% 8% 5% 2%
290 € 87 € 12% 10% 8% 6%
310 € 93 € 15% 13% 11% 9%
330 € 99 € 17% 15% 13% 11%
350 € 105 € 20% 18% 16% 14%
370 € 111 € 22% 20% 18% 16%
400 € 120 € 25% 23% 21% 20%
Variable cost /kWhBattery price
Internal rate of return
New Repur. 15 € 20 € 25 € 30 €
250 € 75 € 41 € 36 € 31 € 26 €
270 € 81 € 47 € 42 € 37 € 32 €
290 € 87 € 53 € 48 € 43 € 38 €
310 € 93 € 59 € 54 € 49 € 44 €
330 € 99 € 65 € 60 € 55 € 50 €
350 € 105 € 71 € 66 € 61 € 56 €
370 € 111 € 77 € 72 € 67 € 62 €
400 € 120 € 86 € 81 € 76 € 71 €
Repurposing variable cost /kWhBattery price/kWh
Revenue / kWh
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Remanufacturing
• Remanufacturing: Repair of failed batteries in the same configuration forautomotive reuse
• Today, there is no known remanufacturing activity of lithium-ion batteries
• Analysis of the profitability of remanufacturing with the following assumptions:
13
Data For a 16 kWh battery For 1 t Source
Initial Investment 18 900 000 €
Max capacity kWh / y 480 000 30 000 ≃ 6 000 t
Variable cost€/kWh 80€-140€ 1 280€ – 2 240€ 6 400€ -11 200€
Standridge and Corneal ,
(2014) + Es timation
Remanufactured Bat
price €/kWh 100€ - 200€ 1 600€ - 3 200€ 8 000€ -16 000€ Conservative assumption
Collection cost €/kWh 19 € 300 € 1 500 € Estimation
Standridge and Corneal ,
(2014)
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• Results:
• 25% of Max capacity≃ 1 500 t of end-of-life batteries � Volume is less an issue for remanufacturing.
• When remanufacturing is profitable (IRR >= 15%), minimum revenue is 1000 € / t � Remanufacturing can pay for recycling and reduce overall battery cost
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Starting activity intensity = 25%
80 € 100 € 120 € 140 €
100 €
125 € 27% 3%
150 € 46% 31% 12%
175 € 63% 50% 35% 18%
200 € 80% 67% 53% 39%
Internal Rate of
Return
Reman. variable cost /kWh
Rem.
Bat.
Price
/kWh
80 € 100 € 120 € 140 €
100 € 1 € 19 €- 39 €- 59 €-
125 € 26 € 6 € 14 €- 34 €-
150 € 51 € 31 € 11 € 9 €-
175 € 76 € 56 € 36 € 16 €
200 € 101 € 81 € 61 € 41 €
Revenue / kWhReman. variable cost /kWh
Rem.
Bat.
Price
/kWh
Revenue / kWh
Remanufacturing
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Conclusion
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Recovery option Nature Revenue €/t Comments
Recycling Obligatory Negative
Economies of scale are importantSensitive to the evolution of battery technologyP1 & P2 perform the same in terms of recyclingrevenue and recycling rate
RepurposingOptional, if profitable
4800 - 7000Does not necessitate big volumesSensitive to the evolution of new batteries pricesTechnological challenges, Safety & regulatory issues
RemanufacturingOptional, if profitable 800 - 8 000
Does not necessitate big volumesTechnological challenges, less organizational and legalconstraints
• Remanufacturing seems to be more feasible than repurposing, more challengeshave to be met in repurposing.
• Recycling can not be self sustained just with recycled materials revenue.Remanufacturing or repurposing might be the solution to payfor recycling andreduce the overall battery price.
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EVS28KINTEX, Korea, May 3-6, 2015
What are the options for Li-ion batteries after automotive use?
Hakim IDJIS 1,2, D. Attias1,2, A. Ghaffari1, J-C. Bocquet1
1Industrial Engineering Laboratory, Ecole Centrale Paris, Grande Voie des Vignes, 92290 Châtenay-Malabry, France, [email protected]
2 Armand Peugeot Chair
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Acknowledgments
This work was benefited from the support of the chair “PSA Peugeot CitroenAutomobile: Hybrid technologies and Economy of Electromobility. So-called ArmandPEUGEOT Chair”, led by Ecole Centrale Paris, ESSEC and SUPELEC, and sponsoredby PEUGEOT CITROEN Automobile
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Biblio• Hoyer, C., Kieckhäfer, K., Spengler, T.S., 2014. Technology and capacity planning for the recycli
ng of lithium-ion electric vehicle batteries in Germany. J. Bus. Econ.
• Neubauer, J., Pesaran, A., 2011. The ability of battery second use strategies to impact plug-in electric vehicle prices and serve utility energy storage applications. J. Power Sources 196,
• Neubauer, J.S., Pesaran, A., Williams, B., Ferry, M., Eyer, J.,2012. A Techno-Economic Analysisof PEV Battery Second Use: Repurposed-Battery Selling Price and Commercial and IndustrialEnd-User Value (SAE Technical Paper No. 2012-01-0349). SAE International, Warrendale, PA.
• Standridge, C.R., Corneal, L., 2014. Remanufacturing, repurposing, and recycling of post-vehicle-application lithium-ion batteries. Mineta National Transit ResearchConsortium, San José, CA
• Kwade, A., 2010. On the way to an “intelligent” recycling of traction batteries. Presented at the 7th Braunschweiger Symposium on Hybrid, Electric Vehicles and Energy Management,Braunschweigh.
• Sangwan, K.S., Jindal, A., 2013. An integrated fuzzy multi-criteria evaluation of lithium-ionbattery recycling processes. Int. J. Sustain. Eng. 6, 359–371. doi:10.1080/19397038.2012.735717
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Lithorec estimates
Small Large
Capacity
Invest
Fixed expenses €/a
Capacity
Invest
Fixed expenses €/a
6000 BEV-eq/a* 60000 BEV-eq/a*
560 000 € 3 100 000 €
227 000 € 1 020 000 €
1500 t cells/a 15000
2 100 000 € 5 240 000 €
120 000 € 255 000 €
3300 t coating / a 33000 t coating / a
10 000 000 € 40 000 000 €
1 350 000 € 5 380 000 €
Disassembly
Mechanical Conditioning
Hydrometallurgical
Conditioning