Development and application of CALB olivine-phosphate ......NCM+LMFP blend shows high energy...
Transcript of Development and application of CALB olivine-phosphate ......NCM+LMFP blend shows high energy...
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Advanced Technology Reliable Quality Customer Satisfaction
1 Copyright © CALB All Rights Reserved.
2013
Development and application of CALB olivine-phosphate batteries
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Advanced Technology Reliable Quality Customer Satisfaction
2 Copyright © CALB All Rights Reserved.
2013
Introducing CALB
Development of high energy NCM+LMFP/C batteries
Summary
Agenda
Application and research on LFP/C batteries
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Set up in 2008, CALB is a leading company in power Li-ion battery manufacturing for various applications.
A large state-owned enterprise with headquarter in Luoyang, China, and expanding globally.
registered capitals $130 million
Since 2010, an investment of $600 million was made to build the new industrial park, which covers an area of 86 acres. As going into 2014, CALB now has more than 1,700 professional staffs worldwide.
Company profile
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Competitiveness
One of the largest Specialized power Lithium Battery R&D and Production Project in China
EV Models Application Ranking Top in China
Energy Storage Application Ranking Top in China
Power Lithium Battery Export Ranking Top in China
3 Automatic Production Lines Production Capacity: 600MWH/year One of the Top Large-capacity LFP Power Battery Manufacturer in China
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Market Application
Telecommunication Mining Equipment
Energy Storage xEV
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Cell technology-material chemistry
Prismatic cell Positive active material: LFPNegative active material:
Graphite
Electrolyte: LiPF6/carbonatesSeparator: PP/PE with ceramic
coatingHardware: Aluminum or plastic case
Pouch cell
Positive active material: NCMNegative active material:
Graphite
Electrolyte: LiPF6/carbonatesSeparator: PP/PE with ceramic
coating
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Introducing CALB
Development of high energy NCM+LMFP/C batteries
Summary
Application and research on LFP/C batteries
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0%
20%
40%
60%
80%
100%
120%
0 1000 2000 3000 4000 5000
Retention
Cycle Number
3C/3C@25℃
Cell performance- long cycle life
Capacity: over 80% retention after 4000 cycles Test: 25oC, 80%DOD
CAM battery-xEV
Capacity: over 80% retention after 7000 cycles Test: 25oC, 50/70/100%DOD
CA battery-ESS
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Cell performance- rate and pulse power capability
CAM battery-xEV
2.4
2.6
2.8
3.0
3.2
3.4
3.6
0% 20% 40% 60% 80% 100%
Voltage(
V)
Retention
High rate Discharge Performance
1C
5C
10C
20C
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Cell performance- calendar life
y = 0.00141 x0.60086
R² = 0.96574
y = 0.00018 x0.83563
R² = 0.98634
y = 0.00016 x0.81544
R² = 0.99625
0%
5%
10%
15%
20%
25%
30%
0 1000 2000 3000 4000 5000 6000
Cap
acity
loss
Storage time (days)
Capacity loss vs Storage time@RT
100%SOC
50%SOC
30%SOC
100%SOC Trend line
50%SOC Trend line
30%SOC Trend line
Calendar life over 10 years to match vehicle life
Natural degradation at rest
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CAM50FI CAM72FI
CALB Overview
Cell performance- high safety
CA100FI CA180FI
UL, TUV, CE, ROHS, MSDS, UN38.3 certified
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Safety improvement approach
Applying cathode electrode edge protection to prevent internal short between Al foil and anode
Applying ceramic layer coating on separator/anode to prevent internal short and thermal runaway
Applying safety vent with trigger pressure to prevent rapid gas buildup within the cell which might lead to explosion
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Telecommunication
Energy Storage EV
Oversea 25%
China 25%
Oversea 10%
China 10%
Oversea 15%
China 15%
Revenue Decomposition
ESS 50%
Telecom20%EV 30%
Application of LFP /C battery
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Introducing CALB
Development of high energy NCM+LMFP/C batteries
Summary
Application and research on LFP/C batteries
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AABC,2014
NCM based cathode dominates EV cells
From LFP to NCM,significant energy density increase can be achieved,which is much needed in xEV application
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safety
Ceramic separator
Electrolyte additives
Process control
Cell design
Blended cathodes
Anode coating
Safety improvement through
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Coating or mixing with LFP can improve cell safety using layered cathode material
How to improve the safety of NCM cell while still achieving high energy density? NCM+LMFP
Inspiring works
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Capacity of blended material of NCM
and LMFP was 160mAh/g, 158 mAh/g,
156 mAh/g and 152mAh/g with the
concentration ratio of LMFP being 0,
10%, 20% and 40%, respectively.
Packing density remains 3.2g/cm3 even
with LMFP being 40% in the blend.
High energy density
Pouch cell (20Ah) using such blend
cathode and graphite anode shows
high working voltage about 3.7V and
energy density over 170wh/kg.
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DSC analysis shows O2
release decreases with
the increase of LMFP
concentration in the
blend, indicating that
intermixed NCM/LMFP
shows better thermal
stability over pure NCM
as well as intermixed
NCM/LMO.
Safety improvement
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NCM/graphite NCM/LMFP/graphite
Cell safety was significantly
improved after adopting
blend active materials
Temperature and voltage change during penetration for pure NCM cell
Temperature and voltage change during penetration for NCM/LFMP cell
Safety improvement
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Safety improvement
Safety test results for overcharge, overdischarge, short circuit, heating and nail penetration
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Cycle life
Battery with blend cathode undergoes 2000 cycles at room
temperature with capacity retention over 85%,which is
comparable to LFP battery
50%
60%
70%
80%
90%
100%
0 250 500 750 1000 1250 1500 1750 2000 2250
Ret
entio
n
Cycle number
Low Loading electrode 1 High Loading electrode 1 High Loading electrode 2
NMC Blend LMFP RT Cycle performance
Low loading 240 High loading 330
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Rate performance
2,7
2,9
3,1
3,3
3,5
3,7
3,9
4,1
4,3
0 20 40 60 80 100
Volta
ge ,
V
Capacity % ,With 0.3C
NMC Blend LMFP Rate discharge Characteristic
0.5C 1C
2C 5C
8C 10C
0.3C
Battery with blend cathode shows good rate capability even
discharged up to 10C
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Introducing CALB
Development of high energy NCM+LMFP/C batteries
Summary
Application and research on LFP/C batteries
![Page 25: Development and application of CALB olivine-phosphate ......NCM+LMFP blend shows high energy density、long cycle life、good thermal stability and enhanced safety improvement compared](https://reader030.fdocuments.in/reader030/viewer/2022040821/5e6b1d47e01f26601c69a7c4/html5/thumbnails/25.jpg)
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Summary
Long-term cycling、good rate capability and high thermal stability has made Olivine-structured LFP an ideal positive material for EV and ESS battery.
Promoted by Chinese battery manufacturers, LFP batteries have been widely adopted in EV、ESS、telecom and many other applications
NCM+LMFP blend shows high energy density、long cycle life、good thermal stability and enhanced safety improvement compared to pure NCM or NCM+LMO blend, making it a promising cathode candidate for xEV battery
CALB is committed to continuous research and improvement of Olivine-phosphate batteries,and will keep expanding its application in a lot of areas.
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Thanks!CALB Add. No. 66 North Binhe Road, High-Tech Zone,
Luoyang, Henan, China 471003
Tel.0379-60697961
Fax.0379-60697975
www.calb.cn