Fire-Preventing LiPF6 and Ethylene Carbonate-Based Organic Liquid Electrolyte System for Safer and Outperforming Lithium-Ion Batteries

2020 ◽  
Vol 12 (38) ◽  
pp. 42868-42879
Author(s):  
Gyeong Jun Chung ◽  
Jisoo Han ◽  
Seung-Wan Song
Keyword(s):  
Lithium Ion Batteries ◽  
Organic Liquid ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Electrolyte System

Effect of Lithium Difluoro(oxalato)Borate-Based Electrolyte on the Performance of LiNi0.5Mn1.5O4 for High-Voltage Lithium-Ion Batteries

2013 ◽  
Vol 842 ◽  
pp. 3-6
Author(s):  
Xiao Peng Li ◽  
Xiao Ling Cui ◽  
Man Yun Wang ◽  
Xiu Xiu Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Discharge Voltage ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Electrolyte System ◽  
Oxidation Potentials ◽  
Voltage Plateau

LiNi0.5Mn1.5O4is a promising 5 V class anode material for high power applications; however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi0.5Mn1.5O4. In this paper, the electrochemical performances of lithium difluoro (oxalato) borate (LiODFB)-sulfolane (SL)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.4 V) and satisfactory conductivities. When used in LiNi0.5Mn1.5O4/Li cells, compared to the cell with the electrolyte system of LiPF6-ethylene carbonate/DMC, LiODFB-SL/DMC electrolyte exhibits more stable cycle performance and higher discharge voltage plateau (>4.64 V).

Interfacial Engineering Facilitating Robust Li6.35Ga0.15La3Zr1.8Nb0.2O12 for All-solid-state Lithium Batteries

2021 ◽  
Author(s):  
Hongyang Fan ◽  
Fuxin Wei ◽  
Jianchuan Luo ◽  
Shufen Wu ◽  
Xiying JIan ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Lithium Batteries ◽  
Organic Liquid ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Inherent Safety ◽  
Interfacial Resistance ◽  
Safety Issues ◽  
Interfacial Engineering

All-solid-state Lithium batteries are promising substitutes for traditional lithium ion batteries to solve the inherent safety issues of organic liquid electrolyte. However, the large interfacial resistance renders the batteries insufficient...

Propylene carbonate based electrolyte for extended cycle life lithium-ion batteries

2021 ◽  
Author(s):  
Li yang ◽  
Umamaheswari Janakiraman ◽  
Jacob woods ◽  
John Moote ◽  
wen wen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Propylene Carbonate ◽  
Ethylene Carbonate ◽  
Storage System ◽  
Lithium Ion ◽  
Energy Storage System ◽  
High Energy ◽  
Liquid Electrolyte ◽  
Gas Analysis ◽  
Cycle Life

Lithium-ion batteries (LIBs) are rapidly taking over the electric vehicle (EV) industry as the main energy storage system. They provide high energy efficiency, long cycle life, and low self-discharge compared to other battery chemistries. LIB is generally made up of a lithium metal oxide or phosphate cathode, a graphite anode, a polymer separator and a liquid electrolyte solution. The electrolyte is comprised of a lithium salt dissolved in a mixture of carbonates, such as ethylene carbonate (EC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), etc. The melting point of ethylene carbonate (EC, 36.4°C) is higher than that of its analogue propylene carbonate (PC, –48 °C). Therefore, PC is an attractive candidate to improve the low temperature charge/discharge capacity and the fast charge capability of LIBs. Several groups have attempted to replace EC by PC. However, co-intercalation of PC-solvated Li+ ions results in serious exfoliation of graphite layers and a faster degradation of battery cycle life. We used a combination of additives in PC based liquid electrolyte containing LiPF6 salt, to address this issue. The developed electrolyte offers superior cycle life for the NMC/graphite pouch cell. The rationale for improved performance was analyzed with the help of characterization techniques such as ultra-high precision coulometry (UHPC), EIS, XPS and gas analysis

Effect of Lithium Bis(oxalate)Borate-Based Electrolyte on the Performance of LiNi0.5Mn1.5O4 for High Voltage Lithium-Ion Batteries

2012 ◽  
Vol 519 ◽  
pp. 156-159 ◽  
Author(s):  
Shi You Li ◽  
Yang Yu Zhao ◽  
Wei Zhao ◽  
Xiao Ling Cui
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Discharge Voltage ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Electrolyte System ◽  
Oxidation Potentials ◽  
Voltage Plateau

LiNi0.5Mn1.5O4 is a promising 5 V class anode material for high power applications, however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi0.5Mn1.5O4. In this paper, the electrochemical performances of LiBOB-propylene carbonate (PC)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.5 V) and satisfactory conductivities, When used in LiNi0.5Mn1.5O4/Li cells, compared to the cell with the electrolyte system of LiPF6-ethylene carbonate (EC)/dimethyl carbonate (DMC) electrolyte, LiBOB-PC/DMC electrolyte exhibit several advantages, such as more stable cycle performance, higher discharge voltage plateau (>4.64 V), higher coulomb efficiency, and higher mean voltage (4.55 V).

scholarly journals Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26102-26109
Author(s):  
Hongli Lu ◽  
Shuangwei Zeng ◽  
Dongni Zhao ◽  
Jie Wang ◽  
Yin Quan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Simplex Method ◽  
Lithium Ion ◽  
Electrolyte System ◽  
Electrochemical Testing ◽  
Better Than

The manuscript addresses that the electrolyte system with five components was optimized by combining the simplex method, normalization and electrochemical testing in lithium-ion batteries. The optimized electrolyte is better than commercial electrolyte LiPF6–EC/DEC.

FEC-LiTFSI-Pyr1ATFSI Ionic Liquid Electrolyte to Improve Low Temperature Performance of Lithium-Ion Batteries

2014 ◽  
Vol 986-987 ◽  
pp. 80-83
Author(s):  
Xiao Xue Zhang ◽  
Zhen Feng Wang ◽  
Cui Hua Li ◽  
Jian Hong Liu ◽  
Qian Ling Zhang
Keyword(s):  
Low Temperature ◽  
Lithium Ion Batteries ◽  
Low Temperatures ◽  
Freezing Point ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Capacity Retention ◽  
Composite Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Fluoroethylene Carbonate

N-methyl-N-allylpyrrolidinium bis (trifluoromethanesulfonyl) imide (PYR1ATFSI) with substantial supercooling behavior is synthesized to develop low temperature electrolyte for lithium-ion batteries. Additive fluoroethylene carbonate (FEC) in LiTFSI/PYR1ATFSI/EC/PC/EMC is found that it can reduce the freezing point. LiFePO4/Li coin cells with the FEC-PYR1ATFSI electrolyte exhibit good capacity retention, reversible cycling behavior at low temperatures. The good performance can be attributed to the decrease in the freezing point and the polarization of the composite electrolyte.

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