CAJ | 학술논문

研究了四氟硼酸四乙基铵(Et4,NBF4)添加到 LiPF6基电解液(碳酸乙烯酯（EC)＋碳酸二甲酯(DMC)＋碳酸甲乙酯(EMC)(质量比为1∶1∶1)对(LiMn2O4＋活性炭(AC))/Li4Ti5O12超级电容电池电化学性能的影响．线性扫描(LSV)、循环伏安(CV)及电池充放电等测试结果表明：Et4NBF4盐改变了复合电解液中离子对的结构，提高了复合电解液的高电压稳定性和电导率．在实验条件下，随着复合盐电解液中 Et4NBF4含量的增加，电池放电容量也增加，含有Et4NBF4与LiPF6物质的量的比为4∶1的电解液的电池电化学性能最好，在4C倍率下循环5,000周后，容量还有86.8,mA·h，保持率为95.8%．
연구료사불붕산사을기안(Et4,NBF4)첨가도 LiPF6기전해액(탄산을희지（EC)＋탄산이갑지(DMC)＋탄산갑을지(EMC)(질량비위1∶1∶1)대(LiMn2O4＋활성탄(AC))/Li4Ti5O12초급전용전지전화학성능적영향．선성소묘(LSV)、순배복안(CV)급전지충방전등측시결과표명：Et4NBF4염개변료복합전해액중리자대적결구，제고료복합전해액적고전압은정성화전도솔．재실험조건하，수착복합염전해액중 Et4NBF4함량적증가，전지방전용량야증가，함유Et4NBF4여LiPF6물질적량적비위4∶1적전해액적전지전화학성능최호，재4C배솔하순배5,000주후，용량환유86.8,mA·h，보지솔위95.8%．
The effect of blended salts(Et4NBF4 and LiPF6)added to the ethylene carbonate+dimethyl carbonate+ethyl(methyl)carbonate(mass ratio of EC,DMC and EMC is 1∶1∶1)on super-capacitor battery system consisting of LiMn2O4/activated carbon(AC)as the cathode,and Li4Ti5O12 as the anode was investigated. The electrochemical performance of the batteries was tested by linear sweep voltammetry(LSV),cyclic voltammetry(CV) and charge-discharge tests. The results indicate that Et4NBF4 salt charges the structure of ion-pairs,and improves the high-voltage stability and conductivity of composite salts electrolyte. With the addition of Et4NBF4,more free ions are provided,and the capacity of the super capacitor battery increases. It is also found that the battery shows best electro-chemical performance with the mole ratio of Et4NBF4 and LiPF6 being 4∶1,the discharge capacity is 86.8,mA·h and the capacity retention is 95.8%after 5,000 cycles at 4C rate.