Propylene Carbonate Based Electrolyte for Extended Cycle Life Lithium-Ion Batteries

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

Download Full-text

Acyclic Acetals in Propylene Carbonate-Based Electrolytes for Advanced and Safer Graphite-Based Lithium Ion Batteries

Journal of The Electrochemical Society ◽

10.1149/1945-7111/ab72dc ◽

2020 ◽

Vol 167 (4) ◽

pp. 040509 ◽

Cited By ~ 2

Author(s):

J. Atik ◽

S. Röser ◽

R. Wagner ◽

D. Berghus ◽

M. Winter ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Propylene Carbonate ◽

Lithium Ion

Download Full-text

Extended Cycle Life Implications of Fast Charging for Lithium-Ion Battery Cathode

Energy Storage Materials ◽

10.1016/j.ensm.2021.07.001 ◽

2021 ◽

Author(s):

Tanvir R. Tanim ◽

Zhenzhen Yang ◽

Andrew M. Colclasure ◽

Parameswara R. Chinnam ◽

Paul Gasper ◽

...

Keyword(s):

Lithium Ion Battery ◽

Lithium Ion ◽

Cycle Life ◽

Fast Charging ◽

Extended Cycle

Download Full-text

Two-dimensional hybrid nanosheets of few layered MoSe2 on reduced graphene oxide as anodes for long-cycle-life lithium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c6ta04390a ◽

2016 ◽

Vol 4 (40) ◽

pp. 15302-15308 ◽

Cited By ~ 104

Author(s):

Zhigao Luo ◽

Jiang Zhou ◽

Lirong Wang ◽

Guozhao Fang ◽

Anqiang Pan ◽

...

Keyword(s):

Graphene Oxide ◽

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Reduced Graphene Oxide ◽

Lithium Ion ◽

Cycle Life ◽

Two Dimensional ◽

Long Cycle Life ◽

Excellent Electrochemical Performance ◽

Reduced Graphene

We report the synthesis of a novel 2D hybrid nanosheet constructed by few layered MoSe2 grown on reduced graphene oxide (rGO), which exhibits excellent electrochemical performance as anodes for lithium ion batteries.

Download Full-text