Related Experiment Video
Updated: May 30, 2025

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
Exceptional Battery-level Safety of High Energy Density Lithium-Ion Batteries through Non-Flammable and
Huamin Qiu1, Hao Jia1, Yifan Zhou1
1The Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, PCMF Laboratory, School of Chemical Engineering and Technology, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
Abstract:
The poor safety performance of high energy density lithium-ion batteries (LIBs) is drawing increasing public concern. To enhance the safety performance on the battery level, it is indispensable to design safe electrolytes that are both non-flammable and low exothermic under abusive conditions. By rational design, a safe localize high concentration electrolyte (LHCE) with non-flammability and extremely low exothermicity is formulated. Compared with conventional LiPF6-organocabonate electrolytes and previous LHCEs, the heat generated by the reaction between the safe LHCE and fully charged electrodes under abusive conditions is significantly reduced. Because of the non-flammability and low-exothermicity of the safe LHCE, high energy density LIB (1800 mAh Gr||LiNi0.7Mn0.2Co0.1O2, fully charged to 4.3 V) with the safe LHCE successfully passes the nail penetration test. Because of the excellent interphasial properties of the safe LHCE, the cycle life and the rate capability of high energy density LIBs are significantly improved when the safe LHCE is adopted. This work sheds light on the design principles of electrolytes for achieving battery-level safety.
More Related Videos
Related Concept Videos
Batteries and Fuel Cells
Electrolyte and Nonelectrolyte Solutions
Ionic Bonding and Electron Transfer
Aqueous Solutions and Heats of Hydration
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
Trends in Lattice Energy: Ion Size and Charge
Electrolysis

