1、几篇电解液新型添加剂文献总结,第一页,共24页。,第二页,共24页。,第三页,共24页。,Phosphate and phosphazene electrolyte additives for Li-ion batteriesMeet.Abstr.2012,Volume MA2012-01,Issue 6,Pages 334.,第四页,共24页。,4-(perfluorohexyl)-1,3-dioxolan-2-one,3,3,3-Trifluoropropylene carbonate三氟代碳酸丙烯酯CAS:167951-80-6,4-(perfluorobutyl)-1,3-dioxol
2、an-2-one,4-(perfluorooctyl)-1,3-dioxolan-2-onePFO-EC,Perfluoroalkyl-substituted ethylene carbonates:Novel electrolyte additives for high-voltage lithium-ion batteriesJournal of Power Sources 246(2014)184-191,4-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。,第五页,共24页。,PFO-EC在(EC:E
3、MC=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。,第六页,共24页。,(EC:EMC=3:7,1.2M LiPF6,0.5wtPFO-EC,Li1.2Ni0.15Mn0.55Co0.1O2-石墨(2.2-4.1,3cycles;C/3 2.2-4.6 200cycles)容量保持率为66%(172mAh/g)。,第七页,共24页。,第八页,共24页。,第九页,共24页。,Trimethyl phosphite亚磷酸三甲酯 CAS:121-45-9,适用于富锂高电压正极,可正极成膜,提高
4、正极材料的电化学性能和热稳定性;含量不宜超过2wt%。,Trimethyl phosphite as an electrolyte additive for high-voltagelithium-ion batteries using lithium-rich layered oxide cathodeJournal of Power Sources 240(2013)471-475,Li1.2Mn0.54Ni0.13Co0.13O2:2.5-4.8V,0.1C首次充电;2.5-4.6V,0.5C 100cycles,189.5mAh/g(81.3%);150mAh/g(5C)、90mAh/
5、g(10C),第十页,共24页。,第十一页,共24页。,第十二页,共24页。,Tris(pentafluorophenyl)phosphine三(五氟苯基)膦CAS:1259-35-4,高电压添加剂,cycles Ok,倍率不佳;用量为0.5wt%较宜,1wt%性能不佳。,Tris(pentafluorophenyl)phosphine:An electrolyte additive for high voltage Li-ion batteriesElectrochemistry Communications 18(2012)123126,Li/LiNi0.5Mn1.5O4,(1M LiPF
6、6,EC:DMC:DEC=1:1:1,0.5wt%TPFPP):3.5V-4.9V,0.2C 55cycles,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,第十三页,共24页。,第十四页,共24页。,Tris(pentafluorophenyl)borane三(五氟苯基)硼烷TPFPBCAS:1109-15-5,三(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。,Tris(pent
7、afluorophenyl)Borane as an Additive to Improve the Power Capabilities of Lithium-Ion BatteriesJournal of The Electrochemical Society,153(6),A1221-A1225(2006),第十五页,共24页。,第十六页,共24页。,第十七页,共24页。,第十八页,共24页。,N-(Triphenylphosphoranylidene)aniline四苯基氨化膦CAS:2325-27-1,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
8、其工作电压到4.4V,且对负极MCMB没有影响。,N-(triphenylphosphoranylidene)aniline as a novel electrolyte additive for high voltage LiCoO2 operations in lithium ion batteries,第十九页,共24页。,RF:EC:EMC:DMC=1:1:1,1M LiPF6EL:EC:EMC:DMC=1:1:1,1M LiPF6,0.2wt%TPPA,第二十页,共24页。,第二十一页,共24页。,ECS Electrochemistry Letters,1(3)A50-A53(2012),Methylene methanedisulfonate甲烷二磺酸亚甲酯CAS:99591-74-9,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。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。,第二十二页,共24页。,第二十三页,共24页。,第二十四页,共24页。,
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