TY  - JOUR
AU  - Ehteshami, Niloofar
AU  - Eguia-Barrio, Aitor
AU  - de Meatza, Iratxe
AU  - Porcher, Willy
AU  - Paillard, Elie
TI  - Adiponitrile-based electrolytes for high voltage, graphite-based Li-ion battery
JO  - Journal of power sources
VL  - 397
SN  - 0378-7753
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2019-03442
SP  - 52 - 58
PY  - 2018
AB  - Operating high voltage lithium-ion batteries (LIB) is still an obstacle due to the limited anodic stability of state-of-the-art alkyl carbonates-based electrolytes which incorporate ethylene carbonate (EC). Thus, we replace here the widely used ethylene carbonate (EC)/dimethyl carbonate (DMC) solvent formulation by adiponitrile (ADN)/DMC (1/1, wt./wt.), to enable room temperature electrolyte formulations with high anodic stabilities. The possibility of operating graphite with 1 M LiDFOB & 1 M LiFSI ADN/DMC (1/1, wt./wt.) without additive is evidenced, with a clear advantage for the LiDFOB electrolyte. The addition of fluoroethylene carbonate (FEC) as a SEI additive results in improved graphite electrode performance in both cases and, less expectedly, in improved anodic stabilities. Cathodes operating above 4.3 V vs Li+/Li have been paired with graphite as well and allowed improved rate capability as compared to graphite half-cells. The safety of the electrolytes versus a charged graphite anode is improved as compared with state-of-the-art, EC-based electrolytes.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000445317900008
DO  - DOI:10.1016/j.jpowsour.2018.07.004
UR  - https://juser.fz-juelich.de/record/863369
ER  -