A nanorod-like Ni-rich layered cathode with enhanced Li⁺ diffusion pathways for high-performance lithium-ion batteries

Abstract

Nanorod-like Ni-rich LiNi0.6Co0.2Mn0.2O2 possesses more exposed active {010} facets and the volume change of lithiation/delithiation is as small as 2.12%.

Isocyanoethyl Methacrylate (IMA) as a Bifunctional Electrolyte Additive for LiNi0.8Co0.1Mn0.1O2/Graphite Batteries with Enhanced Performance

“…In LSV test results, the electrolyte containing IMA has obvious oxidation current at about 4.2 V (vs. Li + /Li), as shown in Figure 6b, which indicates that IMA can be oxidized prior to solvent molecules and participate in the formation of CEI film. The oxidation current of the blank electrolyte increases sharply from about 5.5 V, while the oxidation reaction is delayed to 6.0 V in the electrolyte containing IMA, indicating that the addition of IMA can improve the oxidation stability of the electrolyte at high voltage [12,33] . The above mentioned LSV and CV test results are consistent with the quantitative calculation results.…”

“…Among them, the high‐nickel ternary layered oxides LiNi x Co y Mn z O 2 (NCM, 0.5<x, x+y+z=1) have attracted wide attention due to their high specific capacity [6–9] . However, the high‐nickel NCM cathodes have the technical problem to be solved in the existing commercial electrolyte system due to their strong oxidizing ability and poor structural stability [10–12] . During the cycle of the batteries, the decomposition of electrolyte on the surface of high nickel NCM cathode increases, and the transition metal ions elute from the electrode material, resulting in the destruction of the electrode structure and the continuous decomposition of electrolyte [13–16] .…”

Synthesis, characterizations and electrochemical performances of anhydrous CoC2O4 nanorods for pseudocapacitive energy storage applications

“…1(c). 17 Redox peaks are originated due to the reversible transformation between Co 2+ to Co 3+ during electrosorption (redox) of OH À ion. Co 2+/3+ redox peak appears around 0.17 V vs. Hg/HgO reference electrode.…”

A unique co-recovery strategy of cathode and anode from spent LiFePO4 battery

“…3a). The satisfactory small particle size is conducive to speeding up the extraction and embedding of Li + in the process of electrochemical reaction by decreasing the transmission path of Li ions, shortening the transportation time, and ultimately endowing the material with an excellent rate performance [42][43][44]. In addition, such a small particle size of the cathode material endows it with a large specific surface area, which is instrumental in the complete interpenetration between the electrode and electrolyte, thus promoting the adequate diffusion of Li ions [45].…”