Research Progress of Advanced Lithium Ion Polymer Battery Technology

Transcription

1 The 34 th Florida International Battery Seminar Research Progress of Advanced Lithium Ion Polymer Battery Technology Peter Cheng Highpower Research Institute March 21st,2017

2 Content Highpower Company Introduction Highpower Battery Product & Application Introduction 4.45V High Energy Density Battery Technology Polymer Power Battery Technology Acknowledgements Contact Information

3 Company Introduction A Nasdaq(HPJ) Listed Company in 2008 Which Founded in 2001,Headquarter Located in Shenzhen, China With the employee in Shenzhen, Huizhou, Ganzhou, Suzhou, Hong Kong, Taiwan and San Francisco President & CEO Vision-Mission-Core Value Social Responsibility Research Institute Sales & Marketing Sourcing & Procurement Finance HR IT Shenzhen Highpower Shenzhen Springpower Huizhou Highpower.NiMH.Polymer.Polymer/Cylindrical/Pow er Cell Shenzhen Icon Huizhou Yipeng.Total Solution Ganzhou Highpower.Recycle (NiMH & Li-ion)

4 Highpower Li-ion Battery Type

5 Highpower Li-ion Battery Application

6 4.45V High Energy Density Battery Technology High Energy Density Consumer Battery Roadmap Cathode System Improvement Anode System Improvement Electrolyte System Improvement 4.45V battery performance Charge/Discharge curve High temperature 85±2 storage performance High temperature 60±2 long time storage performance Low temperature performance Room 23±2 temperature cycle life performance High temperature 45±2 cycle life performance Safety performance

7 High Energy Density Consumer Battery Roadmap

8 Cathode System Improvement High Energy 140 Density High 100 Safety 90 NMC mah/g 4.2V LMO 4.2V 95mAh/g 2008 LCO-4.2V 142mAh/g NCM mAh/g 4.2V LFP 3.6V 130mAh/g NMC mah/g 4.2V Doping & Coating LCO-4.35/4.40V 165/172mAh/g NMC /175mAh/g 4.35/4.40V LFP 3.6V 156mAh/g NCM mAh/g 4.35V Doping & Coating LCO-4.45V 182mAh/g Doping & Coating LMP 4.2V 150mAh/g LCO-4.50V 194mAh/g NCM /200mAh/g 4.20/4.35V LMFP 4.2V 160mAh/g Doping & Coating LCO-4.55V 205mAh/g NCA 185/195mAh/g 4.20/4.35V xli 2 MnO 3 (1-x)LiMO 2 (M=Mn, Ni, Co) 250mAh/g L 2 MO V LiNi 0.5 Mn 1.5 O V mah/g (Spinel) LVP V mah/g LCoP V mah/g LNMP V 130mAh/g 2022

9 Cathode System Improvement 4.45V LCO precursor doping technology Element Weight Atom System update materials structure analysis: O K Al K Co K Total V LCO 4.35V LCO 4.45V LCO

10 Cathode System Improvement System update materials metal ions dissolution comparison: Precursor doping improve LCO structural stability; System update high potential materials show excellent stability, phase transition had been suppressed; High potential material metal ions dissolution contend decreased obviously.

11 Capacity Density (mah/g) High Energy Density Artificial Graphite 340 Hard/Soft Carbon HC SC 2008 Anode System Improvement 300 Rapid charge MCMB Artificial/Natural Composite Graphite Modified Artificial Graphite Si(SiOx)/Graphite 350 Amorphous Carbon Coating Modified Graphite LTO 350 Metal/Carbon Composite Li Metal Solid Battery

12 Anode System Improvement Deign thought SEM Anode energy density First generation: conventional graphite FSN-1 Second generation: Easy graphitization; Third generation: Secondary particle to decrease expansion; Binder system: Acrylic acid Normal SBR Mix primary and secondary particle increase efficiency and density;

13 Electrolyte System Improvement System update: optimize solvent and additive: System Solvent Additive 4.20V EC/DEC/EMC/PC VC/PS 4.35V EC/DEC/EMC/PC FEC/PS/DTD/SN 4.45V EC/PC/DEC/PP FEC/PS/DTD/DENE/HTC.. Mechanism analysis: SN: DENE: N O O N DTD:

14 Charge/Discharge Curve Charge & discharge curve: Discharge plateau: Rate current Voltage plateau 0.2C 3.876V 0.5C 3.776V 1.0C 3.664V 1.5C 3.592V 2.0C 3.574V

15 High Temp. Storage Performance(85 ) HT 85 4hrs test data: Performance chart: MARK Hot swelling IMP increase ratio Residual capacity ratio Recovery capacity ratio 4.45V-1# 3.93% 10.74% 94.53% 98.40% 4.45V-2# 3.91% 9.68% 92.47% 96.07% 4.45V-3# 2.45% 10.70% 92.63% 95.80% Aver. 3.43% 10.37% 93.21% 96.75% Min. 2.45% 9.68% 92.47% 95.80% Max. 3.93% 10.74% 94.53% 98.40%

16 High Temp. Long Time Storage Performance(60 ) Performance chart: 60 21days test data: NO Hot swelling Voltage retention 4# 7.21% # 7.39% # 7.12% Aver. 7.24% Min. 7.12% Max. 7.39% 4.248

17 Low Temperature Performance Cell low temperature charge disassemble: 0 0.2C 0 0.3C Low temperature discharge data & performance chart: MARK C C 0 0.2C C C 0 0.5C 4.45V-7# 46.8% 83.4% 94.2% 30.0% 56.7% 76.5% 4.45V-8# 47.8% 83.3% 93.7% 37.1% 58.9% 78.3% 4.45V-9# 48.3% 82.5% 94.5% 37.9% 59.1% 81.7% Aver. 47.6% 83.1% 94.2% 35.0% 58.2% 78.8% Min. 46.8% 82.5% 93.7% 30.0% 56.7% 76.5% Max. 48.3% 83.4% 94.5% 37.9% 59.1% 81.7%

18 Room Temperature Cycle Life Performance Pass criteria:rt, 0.7/0.5C, 500 cycles capacity retention 80%, swelling ratio 10%;

19 High Temperature Cycle Life Performance Pass criteria:rt, 0.7/0.5C, 300 cycles capacity retention 80%,swelling ratio 10%;

20 Safety Performance Test Items Test Result Hot oven test (130 /30min.) Passed Short-circuit test (55 ) Passed Overcharge test (3C/5V) Passed Crush test Passed

21 Highpower Polymer Power Battery Technology Power Battery Roadmap High Energy Density Power Battery Performance High Power Density Power Battery Performance

22 Polymer Power Battery Roadmap

23 High Energy Density Power Battery Performance Cell model: HPD AC Dimension: Max7.6*130*218 Chemical system: NCM with special coating technology (152mAh/g)/Graphite Operation voltage: 2.8~4.2V, nominal voltage Capacity: 20.0Ah(1C,min.),21.0Ah(1C,aver.),2.8V cut down Cell energy density: 190Wh/Kg Cell power density: 1200W/Kg Standard charge/discharge rate: 0.5C/0.5C & 1CA/1CA Charge & discharge parameter: 4.2V to 0.05C cut off, 2.8V cut down Cell cycle Life: 1C charge/1c discharge Room temp cycles 80% residual capacity 10% swelling rate (25 ) High temp cycles 80% residual capacity 10% swelling rate (45 ) Safety: QC/T 743 High temperature storage: 60 /30 days, swelling rate less than 10%

24 OCV Table & Curve Test Condition : Charge by 1CA CC-CV to 4.2V while the charging current is taping to 0.05CA. And discharged 5% of the 1C capacity at constant current of 1CA. The discharge repeats 20 times. Cells rest 60 minutes after every discharge. OCV shall be recorded after every pause. SOC (%) OCV (V) SOC (%) OCV (V) OCV(V) OCV-SOC Profile SOC(%)

25 Rate Discharge Performance Test Condition : Cells charged by 1CA to 4.2V while the charging current is taping to 0.05CA. And then discharged by 0.5C,1C,2C,3C,4C in turn. No. Capacity Ratio 0.5C 1C 2C 3C 4C 0.5C/20000mAh 1C/0.5C 2C/0.5C 3C/0.5C 4C/0.5C 1# % 98.35% 97.48% 97.65% 97.45% 2# % 97.95% 97.09% 97.20% 96.85% 3# % 98.48% 97.92% 97.99% 97.85% Spec 100% 97% 90% 80% 75% HPD AC-20000mAh Rate Discharge Performance 0.5C 1C 2C 3C 4C Voltage/V Capacity/mAh

26 Test Condition : Cells charged by 1CA to 4.2V while the charging current is taping to 0.05CA at 25±5. Then stored under -20±2, -10±2, 0±2 for 24 hrs(and 55±2 for 4hrs), then discharge by 1C to 2.8V. No. IMP (mω) Temperature Discharge Performance Voltage (V) Capacity (mah) Capacity(mAh) Ratio Capacity(mAh) Ratio Deformation 1# % % NO NO 2# % % NO NO 3# % % NO NO Spec 50% 95% ND/NB HPD AC-20000mAh Temperature Discharge Performance Broken Voltage/V C -10 C 0 C 25 C Capacity/mAh

27 60 /30 Days Storage Test Test Condition : Cells charged by 1CA to 4.2V while the charging current is taping to 0.05CA. Kept under 60±2 for 30 days, then rest at 25±5 for 2hrs. Discharged by 1C to 3.0V,standby for 10 minutes and then charged and discharged for 3 cycles. Original data After 60 / 30days Cell No OCV (V) Full Charge state Hot state Cooling to Room Temperature Residual. Cap. Recovery. Cap. IMP /mohm THK 1 /mm initial cap. /mah THK 2 /mm Swelling /% OCV (V) Vol. drop /% IMP /mohm IMP Increasing /% THK3 /mm Swelling /% mah % mah % 1# # # Spec (Reference) Residual capacity 85%; Recovery capacity 90%

28 RT Cycle Life Performance Test Condition : : Charged by 1CA to 4.2V while the charging current is taping to 0.05CA. Rest for 10min. : Discharged by 1CA to 3.0V. Rest for10min 110% Ah 25 1C/1C Cycle Percentage 100% 90% 80% 1# 2# 3# 70% 60% Criteria:80% after 2000cycles

29 HT Cycle Life Performance Test Condition : /60 : Charged by 1CA to 4.2V while the charging current is taping to 0.05CA. Rest for 10min. /60 :Discharged by 1CA to 3.0V. Rest for10min 110% Ah 45 1C/1C Cycle 110% Ah 60 1C/1C Cycle 100% 100% Percentage 90% 80% 1# 2# Percentage 90% 80% 1# 2# 70% 60% Criteria:80% after 1000cycle # 70% 60% Criteria:80% after 800cycle #

30 Safety Performance Test Items Sample Size Test After Conclusion Nail penetration 5pcs Passed Heating test (130 /30min.) 5pcs Passed Short-circuit(55 ) 5pcs Passed Overcharge Test(1C/5.0V) 5pcs Passed Crush test 5pcs Passed Impact Test 5pcs Passed

31 High Power Density Power Battery Performance Cell model: HPD AD Dimension: Max10.5*165*223 Chemical system: NCM with special coating technology (145mAh/g)/Graphite Operation voltage: 3.0~4.2V, nominal voltage Capacity: 18.0Ah(1C,min.),18.5Ah(1C,aver.),3.0V cut down Cell energy density: 130Wh/Kg Cell power density: 2700W/Kg Standard charge/discharge rate:1.0c/1.0c Charge & discharge parameter: 4.2V to 0.05C cut off, 3.0V cut down Cell cycle Life: 1.0C charge/1.0c discharge or 4.0C charge/5.0c discharge Room temp cycles 80% residual capacity 10% swelling rate(4c/5c) High temp cycles 80% residual capacity 10% swelling rate (45,1C/1C) Safety: GB/T 31485

32 OCV Table & Curve Test Condition : Charge by 1CA CC-CV to 4.2V while the charging current is taping to 0.05CA. And discharged 5% of the 1C capacity at constant current of 1CA. The discharge repeats 20 times. Cells rest 60 minutes after every discharge. OCV shall be recorded after every pause. SOC (%) OCV (V) SOC (%) OCV (V) OCV(V) OCV-SOC Profile SOC(%)

33 Rate Charge Performance Test Condition : Cells discharged by 1CA to 3.0V. And then charged by 1C,2C,3C,5C, 8C to 4.2V with 0.05CA cut-off in turn. CC-CV Capacity(mAh) CC-Capacity(mAh) CC-Ratio No. 1C 2C 3C 5C 1C 2C 3C 5C 1C 2C 3C 5C 1# % 89.30% 85.75% 83.07% 2# % 90.51% 86.20% 82.78% 3# % 90.16% 86.01% 83.05% Spec 5C,CC capacity 80% 5C CC-CV capacity Voltage/V Rate Charge Performance SOC/% 1C 2C 3C 5C Time/min Time- SOC Profile SOC/% 1C 2C 3C 5C

34 Test Condition : Rate Discharge Performance Cells charged by 1CA to 4.2V while the charging current is taping to 0.05CA. And then discharged to 3.0V by 1C,2C,3C,5C, 8C in turn. Capacity(mAh) Ratio No. 1C 3C 5C 8C 1C 3C 5C 8C 1# % 96.62% 92.12% 91.52% 2# % 96.80% 92.24% 91.66% 3# % 96.32% 93.68% 91.89% Spec 8C capacity 88% initial capacity 4.3 Rate Discharge Performance 4 Voltage/V SOC/% 1C 3C 5C 8C

35 Temperature Discharge Performance Test Condition : Cells Charged by 1CA to 4.2V while the charging current is taping to 0.05CA at 25±5. Then stored under -20±2 for 24 hrs(or 55±2 for 5 hrs), then discharge by 1CA to 2.5V. No. IMP Voltage Capacity (mω) (V) (mah) Capacity(mAh) Ratio Capacity(mAh) Ratio Deformation Broken 1# % % NO NO 2# % % NO NO 3# % % NO NO Spec 70% 95% ND/NB 4.5 Temperature Discharge Performance 4 Voltage/V SOC/%

36 HPPC Performance Test Condition : Cells Charged by 1CA to 4.2V while the charging current is taping to 0.05CA at 25±5. Then measure 5C/10s discharge power at every 10% SOC, rest 1hr between every two pulse HPPC Performance Power Density(W/kg) # 2# 3# % 80% 70% 60% 50% 40% 30% 20%

37 Temperature Increment Analysis Test Condition (45 ) : Charge by CC=4C to 4.20V then CV=4.20V to current drop to 0.05C and then discharge by CC=5.0C to 3.0V.

38 RT Cycle Life Performance(4C/5C) Test Condition : : Charged by 4CA to 4.2V while the charging current is taping to 0.05CA Rest for 10min. : Discharged by 5CA to 3.0V. Rest for 10min Ah 25 4C/5C Cycle 110% Percentage 100% 90% 1# 80% 70% Criteria:80% after 2000cycle. 2# 3# 60%

39 RT Cycle Life Performance(1C/1C) Test Condition : : Charged by 1CA to 4.2V while the charging current is taping to 0.05CA Rest for 10min. : Discharged by 1CA to 3.0V. Rest for 10min 110% Ah 25 1C/1C Cycle Percentage 100% 90% 80% 70% Criteria:80% after 2000cycle. 1# 2# 3# 60%

40 HT Cycle Life Performance Test Condition : : Charged by 1CA to 4.2V while the charging current is taping to 0.05CA Rest for 10min. : Discharged by 1CA to 3.0V. Rest for 10min 110% Ah 45 1C/1C Cycle Percentage 100% 90% 80% 70% Criteria:80% after 1000cycle. 1# 2# 3# 60%

41 Safety Performance Test Items Sample Size Test After Conclusion Nail penetration 5pcs Passed Heating test (130 /30min.) 5pcs Passed Short-circuit(55 ) 5pcs Passed Overcharge Test(1C/5.0V) 5pcs Passed Crush test 5pcs Passed Impact Test 5pcs Passed

42 Acknowledge Highpower International: Chen Qiduo, Liu Chan, Yu Lijuan, etc.

43 Contact Information.Peter Cheng / Tel: ext 836.Fax: Web: