Use of non-conventional electrolyte salt and additives in high-voltage graphite/LiNi0.4Mn1.6O4 batteries

LiTDI as electrolyte salt for Li-ion batteries: transport properties in EC/DMC

“…The Larmor resonance frequencies are 100.00 MHz, 38.86 MHz and 94.08 MHz for 1 H, 7 Li and 19 F nuclei, respectively. In order to determine the activation energy for the diffusion process of each species, the NMR runs were carried out over a temperature range from 20 C to 80 C within an accuracy of AE1 C and a step DT = 5 C.…”

“…However its instability and moisture sensitivity, which induce high risks of releasing HF and/or PF 5 via its thermal decomposition or hydrolysis in the presence of traces of water, have been highly criticized justifying the importance of finding a replacement. For these reasons in-depth studies have been conducted in order to select more stable and safer lithium salts such as lithium bis(trifluoromethylsulfonyl) imide (LiTFSI) [6] and lithium tris(pentafluoroethane)-trifluorophosphate (LiFAP) [5,7,8]. In 1998, in looking for a truly covalent anion not prone to hydrolysis and HF generation, the concept of "Hückel anions" was introduced in the field of electrolytes for LiBs [9].…”

“…7 Li and 19 F nuclei PGSE-NMR self-diffusion coefficients as a function of LiTDI concentration in EC/DMC.…”

Complementary Strategies Toward the Aqueous Processing of High‐Voltage LiNi0.5Mn1.5O4 Lithium‐Ion Cathodes

“…[3,4] Ap romising approach towardc obalt-free cathode materials is the replacement of the commonly employed LiCoO 2 (LCO) and Li[Ni 1/3 Co 1/3 Mn 1/3 ]O 2 (NMC) with high-voltages pinel oxides, such as LiNi 0.5 Mn 1.5 O 4 (LNMO), initially reported by Amine et al [5] and Dahn and co-workers. [7][8][9] However,m ost studies on LNMO cathodes [9][10][11][12][13] involveP VdF-based binders. [7][8][9] However,m ost studies on LNMO cathodes [9][10][11][12][13] involveP VdF-based binders.…”

Lithiation of an Iron Oxide‐Based Anode for Stable, High‐Capacity Lithium‐Ion Batteries of Porous Carbon–Fe3O4/Li[Ni0.59Co0.16Mn0.25]O2

“…This is a little lower than that of the lithiated PC–Fe 3 O 4 (≈700 mAh g −1 ) at 180 mA g −1 (Figure 4 a). But it is still 2.6 times higher than that of the graphite‐based anode (i.e., 200 mAh g −1 ) in recent results under similar current density 16. In this way, the energy density of the battery could be largely improved, because a lower amount of anode could be used for achieving the same total capacity.…”