View
2
Download
0
Category
Preview:
Citation preview
Willkommen Welcome Bienvenue
Materials Innovation for Next-Generation Batteries Corsin Battaglia SCCER HaE Annual Symposium 2018
SCCER Heat and Electricity Storage
www.sccer-hae.ch
Next-generation lithium-ion batteries
State-of-the-art: 220 Wh/kg SCCER target: 275 Wh/kg
Cathode Team Battaglia Empa
Anode Team Kovalenko ETH/Empa
70% after 500 cycles
Energy density on cell level
Charge 0.5 C Discharge 1.0 C Temperature 25°C Remaining capacity 70% DOD 0%-100%, 500 cycles DOD 6%-94%, 7’500 cycles DOD 8%-92%, 15’000 cycles DOD 10%-90%, 28’000 cycles DOD 20%-80%, 35’000 cycles http://blog.evandmore.com/lets-talk-about-the-panasonic-ncr18650b/
last 10% capacity during 70 min
90% after 180 cycles
Panasonic NCR18650B LG INR MJ1 Samsung SDI INR 35E
How to reach 220 Wh/kg?
Synthesis Automated co-precipitation reactor
Shape controlled synthesis
Validation with NMC111
30 Wh/kg
How to reach 220 Wh/kg?
Slurry formulation
Tape casting
Drying and calendering
Automated co-precipitation reactor
Shape controlled synthesis
Validation with NMC111
Synthesis
Coating
150 Wh/kg
220 Wh/kg
How to reach 220 Wh/kg?
Slurry formulation
Tape casting
Drying and calendering
Stacking
Stacking
Automated co-precipitation reactor
Shape controlled synthesis
Validation with NMC111
Synthesis
Coating
Team Fürst BFH
How to go beyond 220 Wh/kg?
Increase nickel content
Reduce cobalt content
Gain in energy density & cost reduction
Sacrificial electrolyte additives
91% capacity retention after 200 cycles
Still suffer from impedance growth
Electrolyte
Synthesis
Vidal Laveda et al. in preparation
275 Wh/kg
Non-flammable electrolytes
Stability window of water 1.23 V
High salt concentration to reach 2.6 V
77% capacity retention after 500 cycles Kühnel et al. Chem. Comm. 2016 Kühnel et al. ACS Energy Express 2017 Reber et al. ACS Sust. Energy Fuels 2017 Reber et al. submitted
Non-flammable electrolytes
Stability window of water 1.23 V
High salt concentration to reach 2.6 V
77% capacity retention after 500 cycles Kühnel et al. Chem. Comm. 2016 Kühnel et al. ACS Energy Express 2017 Reber et al. ACS Sust. Energy Fuels 2017 Reber et al. submitted
Non-flammable electrolytes
Stability window of water 1.23 V
High salt concentration to reach 2.6 V
77% capacity retention after 500 cycles Kühnel et al. Chem. Comm. 2016 Kühnel et al. ACS Energy Express 2017 Reber et al. ACS Sust. Energy Fuels 2017 Reber et al. submitted
B12H122-
B10H102-
Na+
Solid-state electrolytes
Duchêne et al. Chem. Comm. 2017 Yan et al. Adv. Energy Mater. 2017 Roedern et al. Sci. Reports 2017 SNF Sinergia w/ UniGe & PSI
Closoborate salts
Suppression of transition by 1:1 anion mixing
Thermally stable up to at least 300 °C
~1 mS/cm at room temperature
3 V stability window
Compatible with sodium metal anode
Low overpotential for sodium plating/stripping
3.0 V
plating
Solid-state electrolytes
Duchêne et al. Energy and Environ. Sci. 2017 Patent application submitted SNF Sinergia w/ UniGe & PSI
Solid-state electrolytes
Duchêne et al. Energy and Environ. Sci. 2017 Patent application submitted SNF Sinergia w/ UniGe & PSI
3.0 V
plating
3 V stability window
Compatible with sodium metal anode
Low overpotential for sodium plating/stripping
Candidate cathode material NaCrO2
85% capacity retention after 250 cycles
L i - I o n
N a N i C l
N a - I o n
3
4
1 2
A l l - S o l i d - S t a t e
T R L
SNSF, BFE CTI, InnoSuisse
Contact corsin.battaglia@empa.ch
Lab members, FZSonick, SCCER & Sinergia partners
From lab to market
Several postdoc positions to open soon
Recommended