Charge-storage performance of Li/LiFePO4 cells with additive-incorporated ionic liquid electrolytes at various temperatures

Investigation of the Influence of Nanostructured LiNi0.33Co0.33Mn0.33O2Lithium-Ion Battery Electrodes on Performance and Aging

“…20 It is also known in literature that the lithium salt concentration greatly influences the capacity, rate capability and cycle life of the electrode. 21 The specific resistance through the pore structure r ion reveals a similar picture (red curves with dotted measuring points): the resistance slightly increases with a linear characteristic, whereby the effect is somewhat higher for both nanostructured materials. It seems that general morphological differences of the pristine and the nanostructured active material, especially the pore characteristics (see Table II), are responsible for the difference in impedance behavior.…”

Ionic liquids and their modification with lithium salts –synthesis and studies

“…The lithium iron phosphate (LiFePO 4 ) battery, which uses LiFePO 4 as a cathode material, and a graphitic carbon electrode as the anode is finding a number of roles in vehicle use and backup power because of low-cost, low-toxicity, well-defined performance, long-term stability, etc. Ionic liquids (IL) are suitable electrolytes for lithium batteries due to high thermal stability and environment to dissolve the lithium salts [27]. Ionic liquids form salts with inorganic acids and it was reasonable to investigate phosphate salts for LiFePO 4 cells.…”

Operando STM study of the interaction of imidazolium-based ionic liquid with graphite

“…ILs are also introduced as additives in conventional carbonate-based electrolytes to improve the cycling stability and safety of rechargeable cells. [4][5][6][7][8] The most commonly used ILs in the electrochemical energy storage devices are those containing alkylammonium, [9][10][11] N-alkylpyrrolidinium, 4,8 and N,N'-dialkylimidazolium [12][13][14][15] cations with alkyl chains of different length attached to the N atoms in the alkylammonium or aromatic rings. 16 Carbon materials have been extensively used in electrochemical energy storage devices, primarily as electrode materials, for instance, graphite anode in lithium ion batteries (LIBs), 17 and porous carbon electrode in supercapacitors.…”