Opportunities and Challenges for Electrochemical Energy Storage
Martin Winter
10th International AVL Exhaust Gas and Particulate Emissions ForumLudwigsburg, Germany, February, 20 – 21, 2018
#MEET Battery Research CenterUniversity of MünsterxHelmholtz-Institute Münster (HI MS)Forschungszentrum Jülich GmbHE-mail: [email protected]: [email protected]
Acknowledgements
Bundesministerium für Bildung und Forschung (BMBF)Bundesministerium für Wirtschaft (BMWi)
Bundesministerium für Umwelt (BMU) Wissenschafts- (MIWF) und Wirtschaftsministerium (MWEIMH) von NRW
Universität Münster (WWU)Helmholtz-Gemeinschaft (HGF) und Forschungszentrum Jülich
Acknowledgements
None of us is as smart as all of us
The Battery in the Center ofthe Future Energy Scenario
Normalized Driving Distances of Lithium Ion Battery Chemistries (Battery Level)
2017(NMC111/C)
2020(NMC622/C)
2022(NMC811/C)
2024(NMC811/SiC)
100
150
200
250
300
350
400 Wh/kg Wh/L
Spec
ific
Ener
gy /
Ener
gy D
ensi
ty
1
3
0
2
km/kg km/L
Ran
ge
Battery Level
Numerous Material Combinations Possible
• Several hundred thousand combinations of electrode materials have been investigated
• Less than 50 of these electrode material combinations have been commercialized
• By variation of the electrolyte, even more cell chemistries are possible
• Different cell chemistries different performance characteristics different applications
M. Winter, “Li-Ion Batteries and Beyond“, Industry Report 2017, http://totalbatteryconsulting.com/industry-reports/Li-Ion-and-beyond-report/
Among the 50 Most Disruptive TechnologiesLi-Ion Technology is Predicted to Have Highest Market Volume and Impact
Source: Frost and Sullivan, 2014, ‘Fast-Forward to 2020: New Trends Transforming the World as We Know It’
The Lithium-Ion Advantage Compared to Conventional Batteries:High Energy and High Power are Possible
0.01
110
00
Spez
ifisc
he E
nerg
ie (W
h/kg
)
Spezifische Leistung (W/kg)
100
10 100 1000
100.
1
Blei-Batterie
Ni-Cd-Batterie
Superkondensator
Phys. Kondensator
200
100 200 800300 400 700
00 500 600
400
600
800
1000
1200
Li/O2
Cell
System
Li/S
System
Cell
Cell
System
System
Cell
*
Ener
gy D
ensi
ty /
Wh
L-1
Specific Energy / Wh kg-1
LIB (State of the Art)
LIB (energy optimized)
*Presuming: Li-metal
Wh/L =
Wh/kg
The Lithium Ion Advantage: High Energy Density per Volume in Comparison to Eventual Future Electrochemical Energy Storage Systems**
**Based on Lit. Data
3.5 kWh
1 kWh
Primary Energy Useful
Energy
Energy Conversion and Storage
3 kWh
Liquified Hydrogen
Lithium Ion Battery
The electricity bill
“There can be economy only, where there is efficiency.”*
*Benjamin Disraeli (1804 – 1881), former prime minister of the UK
3.5 kWh
Winter MBattery Cell Chemistries: Between Evolution and Revolution, -at: Horizon Prize, EU: Innovative Batteries, Brussels, Belgium, May, 12, 2017
BMW i3 (94Ah battery)
ChevroletBolt EV
2017 FordFocus
Electric
HyundaiIONIQElectric
Nissan Leaf(30 kWhbattery)
Tesla ModelS 60D
0
5
10
15
20
25
ener
gy c
onsu
mpt
ion
/ (kW
h / 1
00 k
m)
City Highway Combined
Electric Cars: Efficiencies
http://pushevs.com/2016/11/23/electric-cars-range-efficiency-comparison/
Can One type of Battery Fulfil All Requirements?“Die eierlegende Wollmilchsau“ ?
Energy
SafetyLife
Costs
Power
(Temperature)
Huge variety of materials⇒ Evolutionary technology progressby "Drop-in-Approach"⇒ "Roadmap generations"
Internal Chemistry
The Lithium-Ion Battery
External Appearance
Internal Design
Chemistry & PhysicsMaterials ScienceElectrochemistryThin-Film-TechnologyNano-Technology
Li metal
5V cathode
Li-richNCM
HighSurface
Area
Met
al/a
ir ba
tter
y
Low
-Tem
pera
ture
El
ectr
olyt
e
Sn,
Si
Ceramic separator
Non-flammableSolvent
Flex
ible
bi
nder
Polymer
Solid State Electrolyte
I I I I I
Performance & Cost Balance
Safety, LifeEnergy,Power
Hence:Keep the Balance!Follow a System Approach!
Electrolyteadditives
No Independent Optimization of Parameters
Cell Safety
5 2010 20150
1
2
3
4
5
Wor
ldw
ide
EV F
ires
1980 1985 1990 1995 2000 2005 2010 20150
100000
200000
300000
400000
500000
U.S
. Veh
icle
Fire
s
Year
0
100000
200000
300000
400000
500000
Wor
ldw
ide
EV F
ires
U.S.VEHICLE FIRE TRENDS AND PATTERNS
Fire Incidents with ICE und EV:Too Early to Make a Conclusion
• 90 vehicle fires per billion miles of ICE (only US data)• 12 Total Fire Incidents with EV (Worldwide)• 6 Tesla fires (total) and 3 billion miles driven
2 Tesla fires per billion miles
6x Tesla Model S2x Chevrolet Volt2x Fisker Karma1x Zotye1x BYD e62x Mitsubishi
http://insideevs.com/number-of-fire-related-deaths-per-year-caused-by-evs/
450 500 550 600 650 700 750 800 850
160
180
200
220
240
T Ther
mal
Run
away
/ °C
Volumetric Energy Density / Wh l-1
NCM111NCM523NCM523/LMO
NCM523NCM523/LCO
LCO
NCANCA
NCA
NCM811NCM111/LCO
NCM111NCM523NCM523/LMO
NCM523 NCM523/LCO
LCO
NCANCA
NCA
NCM811
NCM111/LCO
Cell Safety of 18650 Cells(ARC-HWS Tests)
Tesla Model S cell (calculation based on NCR18650B)
CATL high power cells for 2017 [3]CATL high energy cells for 2017-2018 [3]
Goal of Renault/Nissan alliance with LIB Tech. [1] LG for 2021 [2]
High/middle power density cellsHigh energy density cells
[1] ZOE Battery Durability, Field Experience and Future Vision, AABC 2017, Mainz, Germany, [2] Advances in High-Energy Density Lithium-ion Polymer Battery for EV, AABC 2016, Mainz, Germany [3] Advanced xEV Battery Development at CATL, AABC 2017, Mainz, Germany
160 180 200 220 240 260 280 300 320 340 360
160
180
200
220
240
T Ther
mal
Run
away
/ °C
Gravimetric Energy Density / Wh kg-1
Layered OxideLCO – LiCoO2NCM111 – LiNi1/3Co1/3Mn1/3O2NCM523 – LiNi0.5Co0.2Mn0.3O2NCM811 – LiNi0.8Co0.1Mn0.1O2NCA - Li(Ni0.8Co0.15Al0.05)O2
SpinelLMO – LiMn2O4
Mitg
lied
der H
elm
holtz
-Gem
eins
chaf
t
HI MS
The electrolyte as “lifeblood“ of the battery cellN
egat
ive
Elec
trod
e
SEI
Elec
trol
yte
Sepa
rato
r
Elec
trol
yte
Posi
tive
Elec
trod
e
Cu Al
FilmExample: Liquid electrolyte lithium battery
Electrolyte is a system component in the center of the cell
Electrolytes are decisive for lifetime, power and safety of the battery
Electrolytes have a direct and indirect influence on the costs of batteries
>25 years of Battery Experience
Long lasting tradition of co-operation between the 3 partners, also beyond electrolyte research
Large infrastructure at all 3 sites
Helmholtz Institute Münster (HI MS):Better Electrolytes Will Enable Better Batteries
.
HI MS – Pool Competencies Synergy
Why Solid Electrolytes (SE)?
Safety Non-flammability of ceramic compounds (!) and polymers (?)
Free of liquid No leakage High temperature stability
Energy Density (Wh/L) and Specific Energy (Wh/kg) Via New Materials In particular with materials that show incompatibility with liquid electrolytes
Power Fast charging ability, also at low temperatures Room temperature single ion conductor; tLi+~1
Cell and Battery System Design Bipolar-design of battery Less system components, as the SE stability is not sensitive to temperature
Why Solid Electrolytes (SE) Not in Rechargeable Batteries Right, So Far?
Cell and Electrode Design Mutual integration of electrode and SE Fixation of interfaces between electrode and SE Minimization of SE thickness and amount
Chemical and Electrochemical Reactivity Reactivity with air and moisture Reactivity at interfaces
Manufacturing of All-Solid-State-Batteries (ASSB) Homogeneous particle distribution Fixation of interfaces through high-temperature treatment and external pressure High speed manufacturing (Roll-to-Roll R2R)?
Experience with ASSB Cell Performance There is no benchmark system
Liquid vs. Solid Electrolyte (SE):LIB with Graphite / NMC Electrodes
NMCSeparator
• Specific Energy ~295 Wh/kg• with dNMC=100µm; dC=120µm; dPP=20µm• 30% electrode porosity
• Specific Energy ~278 Wh/kg• with dNMC=100µm; dC=120µm; dLPS=20µm• 30 vol-% SE-content
NMCGraphiteNMCGraphite
PP SeparatorLiquidElectrolyte
Solid Electrolyte
-10% in Specific Energy
Comparison of Densities
1 g/cm3 1,2 g/cm3 1,5 g/cm3 2,0 g/cm32,9 g/cm3
5,1 g/cm3
13,5 g/cm3
0
5
10
15
Water Carbonate-based
electrolytes
IonicLiquids
SELi7P3S11
SELATP
SEGarnet
Hg
Dens
ity[g
/cm
3 ]
SE: Solid ElectrolyteLATP: Li1.5Al0.5Ti1.5(PO4)3Granat: Li7La3Zr2O12
1.2 g/cm3 1.5 g/cm3
1.0 g/cm3
2 g/cm32.9 g/cm3
5.1 g/cm3
13.5 g/cm3
NMC
• Specific Energy ~278 Wh/kg• with dNMC=100µm; dC=120µm; dLPS=20µm• 30% SE content
• Specific Energy ~426 Wh/kg• with dNMC=100µm; dLi=30µm; dLPS=20µm• 30% SE content
SE NMCSE
Lithium MetalGraphite
Solid Electrolytes: From Graphite to Lithium Metal Anodes
Impact on Energy Density (Wh/L) can be expected, too!
50% Increasein Specific Energy
with dNMC=100 µm; dSep=20 µm; 30% porosity or SE-content*assumption: FE-content in cathode 15 vol.%
Liquid-EL Solid-EL
New material, electrode, and cell designs
295
466
278
426479
204
324
397
0
100
200
300
400
500
600
Gr / NMC Li / NMC Li / NMCSE-coated particles*
Spec
ific
Ener
gy[W
h / k
g]
Liquid ELLight SEHeavy SE
From Liquid to Solid Electrolytes:Possible Development
Battery System Design:Conventional vs. Bipolar Architecture
- + - +
Liquid electrolyte Solid electrolyte
- +- +- +
Conventional series connection Bipolar stack with FE
• SE-based LIB- and Li-metal cells with identical cell volume and design have lower specific energies (Wh/kg) than cells based on liquid electrolyte
• An SE enabling Rechargeable Li metal will lead to high specific energy• A gain in specific energy of LIB-ASSBs might be possible on system level
Solid Electrolyte (SE) is of Interest but SE is a Component, Not a Cell Chemistry
• Recent enhancements in SE Li conductivity at room temperature have stimulated a renewed interest in their use for Li-based batteries
• Less interest in using SE in lithium ion batteries
• While safety could improve, cell cost and weight will rise and manufacturability and cycle life are challenging
• SE can be an enabler for Li-metal-based cells (and other new cell chemistries?)
• Stability, conductivity, manufacturability, and cost are all still TBD and challenging
• Reliable SE source has to be established
• Sulfide-based SE show lower density than oxide-based SE better specific energy, but handling is an issue
Battery Conference in Münster
• Dr. Ulrich Ehmes, TerraE Holding GmbH• Mark Lu, ITRI• Dr. Christophe Pillot, Avicenne• Dr. Venkat Srinivasan, Argonne National Lab• Dr. Andreas Wendt, BMW Group• Prof. Stanley Whittingham, Binghamton Univ.
Mitg
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holtz
-Gem
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chaf
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HI MS
Contact
Prof. Martin WinterEmail: [email protected]: +49-251-83-36033
Dr. Hinrich-Wilhelm MeyerEmail: [email protected] : +49-251-83-23430
Dr. Marcus BernemannEmail: [email protected] : +49-251-83-30008
Institut für Energie- und Klimaforschung (IEK); Helmholtz Institute Münster, IEK-12: Ionics in Energy StorageForschungszentrum Jülich GmbH in der Helmholtz-Gemeinschaft
Corrensstraße 46, 48149 Münster
Fax: +49-251-83 360-32
www.fz-juelich.de/iek/iek-12/EN/Home/
Westfälische Wilhelms-UniversitätMEET Battery Research CenterCorrensstr. 4648149 Münster
Phone: +49 251 83-36031Fax: +49 251 83-36032
[email protected]/ MEET
Contact
Page 31
Prof. Martin Winter+49 251 [email protected]
Dr. Falko Schappacher+49 251 [email protected]
Dr. Adrienne Hammerschmidt+49 251 [email protected]
MEET Exposé | July 2016