Title
Development in the ionic liquid based electrolytes for lithium-ion batteries
Abstract
Lithium-ion batteries nowadays are widely used as the power source for many consumer electronics including cell phones and portable computers. Electricity storage required strict safety protocols starting with the electrolyte choice, where organic carbonate electrolytes, under abuse conditions can lead to crack, ignition, or explosion of the cell. The new approach evolved based on ionic liquids (IL) due to their thermal and electrochemical stability, non-flammability and negligible vapor pressure. The new electrolyte based on imidazolium cation (C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> Im <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> ) with bis(fluorosulfonyl) imide anion, (FSI <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-</sup> ), was mixed with lithium bis(trifluoromethane-sulfonyl)imide, (LiNTf <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) salt and tested in full system configuration graphite (Cgr) and LiFePO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> (LFP). The capacity at C/20 rate for the first 10 cycles was 120 mAh.g <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> , afterwards, the capacity fades to 110 mAh.g <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> and remain stable for next 20 cycles. The XPS studies performed on the neat and cycled electrode (after first and tenth cycle) showed presence of LiF, Li <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> N, poly-oxysulfurs and Li <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S. The film created on graphite surface during the first cycle was stable, also after 10 cycles. The results proved that ionic liquid based electrolytes with FSI anion is suitable for graphite electrodes and shows excellent capacities.
Year
DOI
Venue
2017
10.1109/ICIINFS.2017.8300394
2017 IEEE International Conference on Industrial and Information Systems (ICIIS)
Keywords
DocType
ISSN
Lithium-ion battery,electrolyte,graphite,ionic liquid,FSI
Conference
2164-7011
ISBN
Citations 
PageRank 
978-1-5386-1677-2
0
0.34
References 
Authors
0
5