CAJ | 학술논문

研究了基于烷基噻吩阳离子的离子液体烷基噻吩二(三氟甲基磺酰)亚胺(T_5TFSI)用于锂离子电池电解液的性能,分析了添加剂碳酸亚乙烯酯(VC)和γ-丁内酯(GBL)的影响.在0.4 mol/L的二(三氟甲基磺酰)亚胺锂(LiTFSI)/T_5TFSI中分别加入10%的VC或GBL时,0.1 C首次放电的比容量都可达到150 mAh/g.当w(vc)≤10%时,随着w(VC)的增加,电池的首次放电比容量增加,循环稳定性提高.当加入10%的GBL时,以0.1 C循环的库仑效率接近100%;以0.1 C循环100次的容量保持率为60%.
연구료기우완기새분양리자적리자액체완기새분이(삼불갑기광선)아알(T_5TFSI)용우리리자전지전해액적성능,분석료첨가제탄산아을희지(VC)화γ-정내지(GBL)적영향.재0.4 mol/L적이(삼불갑기광선)아알리(LiTFSI)/T_5TFSI중분별가입10%적VC혹GBL시,0.1 C수차방전적비용량도가체도150 mAh/g.당w(vc)≤10%시,수착w(VC)적증가,전지적수차방전비용량증가,순배은정성제고.당가입10%적GBL시,이0.1 C순배적고륜효솔접근100%;이0.1 C순배100차적용량보지솔위60%.
The performance of alkylthiolanium-based ionic hquid, S-pentylthiolanium bis (trifluoromethane sulfon) imide (T_5TFSI) used in electrolyte of Li-ion battery was researched, the effects of additives vinylene carbonate (VC) and γ-butyrolacton (GBL) were analyzed. When adding 10% VC or GBL into 0.4 mol/L lithium N, N-bis(trifluoromethane sulfon) imide (LiTFSI)/T_5TFSI, the initial specific discharge capacity of the battery could reach to 150 mAh/g at 0.1 C. When w (VC) ≤10%, the initial specific discharge capacity of the battery increased and the cycle stability improved with the increasing of w (VC). When adding 10% GBL, the coulombic efficiency was nearly 100% at 0.1 C, the capacity retention rate was 60% after 100 cycles at 0.1 C.