低温下使用的新型电解液

Novel electrolyte for low temperature application,Sophie Yuan Song XieMay 2009,Outline,Introduction to Novolyte Technologies, Co. LtdNovel electrolyte for low temperature applicationConclusionAcknowledgement,Introduction to Novolyte Co. Ltd,US based companyFounded in 2008 & Headquartered in Cleveland, Ohio, USAPreviously was Fine Chemicals Division of Ferro Performance Materials Co. LtdPurchased by Arsenal Capital Investment Firm in 2008,Introduction to Arsenal Capital,Arsenal Capital is a consistent and disciplined investment firm that builds companies and long-term valueFirm formed in 2000Offices in New York and ShanghaiTeam of 37 industry, operating, and investment professionalsClosed $300 million Fund I in 2003Purchased ten portfolio companiesSold five portfolio companies in 2006-07Returned 1.6x invested capitalGenerated 2.5x and 37% IRR on realized investmentsClosed $500 million Fund II in 2006Completed one investment in 2006No new investments in 2007Completed five new investments in 200829% of capital invested,Novolyte Electrolyte Business,Started Electrolyte Production in 1974Two world class manufacturing plants in U.S. and ChinaPilot scale production at two locations in U.S. and ChinaState-of-the-Art electrolyte plant (China, 1/2005)Largest production capacity in the world: 5,000 mt/yrGlobal Technical Center in Cleveland, U.S.A.Regional Technical Center in Suzhou, China,Novolyte Electrolyte,Electrolytes supplied by Novolyte cover all non-aqueous energy storage applications Primary Lithium Batteries Secondary Lithium Batteries Electrochemical Double Layer Capacitors (i.e. Ultracapacitors or Supercapacitors),Novolyte Baton Rouge Plant LA/USA,Novolyte Suzhou Plant & Technical Center Jiangsu/China,Novolyte Electrolyte R&D,R&D on innovative technologiesNew additivesNew saltsNew solventsFunctional formulationsGel Polymer electrolytesIonic liquidsSmall quantity electrolyte samplesNovolyte formulations for customers qualificationCustom-made formulations,Design principle & approach for low temperature formulation,High ionic conductivityLow electrolyte viscosity & low liquid freezing temperatureSolvent approach Salt approach Additive approach,Typical Formulation-Tested on LiCoO2/AG prismatic can cell,Control-01: LiPF6 in EC/PC/EMC(20:5:75,v/v)+1.5wt%VCL01: LiPF6 in EC/PC/Ester(75%,v/v)+1.5wt%VCL02: LiPF6 in EC/PC/Ester(60%,v/v)+1.5wt%VCL03: LiPF6 in EC/PC/Ester(50%,v/v)+1.5wt%VC L04: LiPF6 in EC/PC/EMC/Ester(36%,v/v)+1.5wt%VC,Taken Control-01 as basic formulation,Typical Formulation-Tested on LiCoO2/AG prismatic can cell,L01: LiPF6 in EC/PC/Ester(75%,v/v)+1.5wt%VCL05: L01+1.5wt% Additive1L06: L01+1.5wt% Additive2L07: L01+1.5wt% Additive3L08: L01+1.5wt% Additive4,Taken L01 as basic formulation, added different additives,1C Discharge performance at 25C,Discharge Capacity (mA.h),1C Discharge performance at 0C,Discharge Capacity (mA.h),1C Discharge performance at -10C,Discharge Capacity (mA.h),1C Discharge performance at -20C,Discharge Capacity (mA.h),1C Discharge performance at -30C,Discharge Capacity (mA.h),Low temp. discharge performance,Comments：1C discharge to 2.5V cutoff,High temperature storage performance,85C 4hours,Cycling performance at ambient,Cycling performance at ambient,L06 Swelling Obviously,Conclusion,Formulation L01, L05, L07 and L08 have shown very good low temperature performanceRoom temperature cycle performance of L01 is not goodAdditive3, 4(L07, L08) improved room temperature cycle performance of L01 considerablyHigh temperature storage performance of L07 and L08 were acceptableFormulation L07 and L08 have shown good