几篇电解液新型添加剂文献总结

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Tris(1,1,1,3,3,3-hexafluoroisopropyl)phosphate三(六氟异丙基)磷酸酯CAS:66489-68-7供应商纯度水分价格苏州氟特99.9501080美元/50g1.5V级高电压电解液添加剂,添加量为1wt%2.与MCMB具有良好的相容性,与PC共用可防止PC的共嵌分解ElectrolyteAdditiveinSupportof5VLiIonChemistr——徐康JournalofTheElectrochemicalSociety,158(3)A337-A342(2011)PhosphateandphosphazeneelectrolyteadditivesforLi-ionbatteriesMeet.Abstr.2012,VolumeMA2012-01,Issue6,Pages334.Tris(hexafluoro-isopropyl)phosphatewasfirstobservedtoextendthecyclinglifeofafull4.7VLi-ioncellusingaLiNi0.5Mn1.5O4cathodeandacommercialgraphiteanode.Thisparticularheavilyfluorinatedphosphatewasalsousedsuccessfullytoallowextended(500cycles)usefulcyclingofa4.8VLiCoPO4cathodevs.lithium4-(perfluorohexyl)-1,3-dioxolan-2-one3,3,3-Trifluoropropylenecarbonate三氟代碳酸丙烯酯CAS:167951-80-6供应商纯度价格Matrix5005元/5g4-(perfluorobutyl)-1,3-dioxolan-2-one4-(perfluorooctyl)-1,3-dioxolan-2-onePFO-ECPerfluoroalkyl-substitutedethylenecarbonates:Novelelectrolyteadditivesforhigh-voltagelithium-ionbatteriesJournalofPowerSources246(2014)184-1914-全氟辛基碳酸乙烯酯(PFO-EC),正极4.3V氧化分解成膜,降低正极cycles阻抗;负极与EC分解产物聚合形成溶解性小的SEI膜。PFO-EC在(EC:EMC=3:7,1.2MLiPF6)溶解性较差,最大浓度为2wt%,而其他溶解度为5wt%。推测PFO-EC的分解产物在电解液中的溶解性较低,从而成膜稳定性高。(EC:EMC=3:7,1.2MLiPF6,0.5wtPFO-EC,Li1.2Ni0.15Mn0.55Co0.1O2-石墨(2.2-4.1,3cycles;C/32.2-4.6200cycles)容量保持率为66%(172mAh/g)。Trimethylphosphite亚磷酸三甲酯CAS:121-45-91.适用于富锂高电压正极,可正极成膜,提高正极材料的电化学性能和热稳定性;2.含量不宜超过2wt%。供应商纯度价格Alfa99203元/50gAldrich99.999+792.09元/25MLTrimethylphosphiteasanelectrolyteadditiveforhigh-voltagelithium-ionbatteriesusinglithium-richlayeredoxidecathodeJournalofPowerSources240(2013)471-475Li1.2Mn0.54Ni0.13Co0.13O2:2.5-4.8V,0.1C首次充电;2.5-4.6V,0.5C100cycles,189.5mAh/g(81.3%);150mAh/g(5C)、90mAh/g(10C)Tris(pentafluorophenyl)phosphine三(五氟苯基)膦CAS:1259-35-41.高电压添加剂,cyclesOk,倍率不佳;2.用量为0.5wt%较宜,1wt%性能不佳。供应商纯度价格Strem982640元/5gAlfa971596元/5gTris(pentafluorophenyl)phosphine:AnelectrolyteadditiveforhighvoltageLi-ionbatteriesElectrochemistryCommunications18(2012)123–126Li/LiNi0.5Mn1.5O4,(1MLiPF6,EC:DMC:DEC=1:1:1,0.5wt%TPFPP):3.5V-4.9V,0.2C55cycles,106.9mAh/g(85.0%)。但倍率性能仍不佳,与正极材料电导率差有关,可通过碳包覆改善Tris(pentafluorophenyl)borane三(五氟苯基)硼烷TPFPBCAS:1109-15-51.三(五氟苯基)硼烷(TPFPB),作为阴离子受体,参与负极成膜并溶剂LiF,提高SEI的导Li+,从而提高电池的电化学性能,对正极没有影响,用量3%为宜(1%),过多则促进锂盐的分解且增大界面阻抗,降低电池的性能。供应商纯度价格TCI973590元/5g阿拉丁973231元/5g北京颖诺凯胜97水分500ppm360元/g16000元/50g(3%发票)Tris(pentafluorophenyl)BoraneasanAdditivetoImprovethePowerCapabilitiesofLithium-IonBatteriesJournalofTheElectrochemicalSociety,153(6),A1221-A1225(2006)N-(Triphenylphosphoranylidene)aniline四苯基氨化膦CAS:2325-27-1供应商纯度价格Aldrich971372.41元/5gAlfa971374元/5g百灵威97679元/5g1.添加0.2wt%TPPA,可优先溶剂在LCO表面成膜,阻止电解液及锂盐的分解,提高其工作电压到4.4V,且对负极MCMB没有影响。N-(triphenylphosphoranylidene)anilineasanovelelectrolyteadditiveforhighvoltageLiCoO2operationsinlithiumionbatteriesRF:EC:EMC:DMC=1:1:1,1MLiPF6EL:EC:EMC:DMC=1:1:1,1MLiPF6,0.2wt%TPPA电导率分解电压首次容量4.4V1C200cyclesRF10.84.7V164.184.2EL10.73.6V164.294.6MethyleneMethanedisulfonateasanElectrolyteAdditiveforImprovingtheCyclingPerformanceofLiNi0.5Co0.2Mn0.3O2/GraphiteBatteriesat4.4VChargeCutoffVoltageECSElectrochemistryLetters,1(3)A50-A53(2012)Methylenemethanedisulfonate甲烷二磺酸亚甲酯CAS:99591-74-91.MMDS可提高LNMC/C电池4.4V的cycles性能,100cycles(70.7%→94.1%),但对4.2V电池改善效果不明显。2.MMDS高压下可在正极分解成膜,降低LiF的含量,提高界面导锂新能,同时抑制LiPF6及电解液在正极表面的分解。1,1,1,3,3,3-Hexafluoroisopropylacrylate1,1,1,3,3,3-六氟异丙基丙烯酸酯CAS:2160-89-6供应商纯度价格Alfa98+,(含50ppm4-甲氧基苯酚稳定剂)2072元/25gMatrix99,(含稳定剂甲氧基氢醌)715元/25gTci98,(含稳定剂MEHQ)1340元/25g2-PHENYL-1,3,2-DIOXABORINANE苯基硼酸1,3-丙二醇酯CAS:4406-77-3供应商纯度价格Aldrich992066.23元/5g2-(1,3,2-DIOXABORINAN-2-YL)BENZONITRILE2-氰基苯硼酸1,3-丙二醇酯CAS:172732-52-4供应商纯度价格Aldrich962047.51元/1gEthylisobutylsulfoneCAS:34008-93-0Li1.LiFAP(三(五氟乙基)三氟磷酸锂)相对LiPF6对水不敏感,热稳定性佳,可替代LiPF6在高电压中应用;2.(1MLiFAP,EC:DMC=1:1,1.6wtFEC,2wt%丁二酸酐),C/10,3.5-4.95V,25cycles,容量保持率70%(withoutadditive)和87%(withadditive)。但电池自放电率高。

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