High-Rate Layered Cathode of Lithium-Ion Batteries through Regulating Three-Dimensional Agglomerated Structure

Abstract

LiNixCoyMnzO2 (LNCM)-layered materials are considered the most promising cathode for high-energy lithium ion batteries, but suffer from poor rate capability and short lifecycle. In addition, the LiNi1/3Co1/3Mn1/3O2 (NCM 111) is considered one of the most widely used LNCM cathodes because of its high energy density and good safety. Herein, a kind of NCM 111 with semi-closed structure was designed by controlling the amount of urea, which possesses high rate capability and long lifespan, exhibiting 140.9 mAh·g−1 at 0.85 A·g−1 and 114.3 mAh·g−1 at 1.70 A·g−1, respectively. The semi-closed structure is conducive to the infiltration of electrolytes and fast lithium ion-transfer inside the electrode material, thus improving the rate performance of the battery. Our work may provide an effective strategy for designing layered-cathode materials with high rate capability.

High-Performance Recovery of Cobalt and Nickel from the Cathode Materials of NMC Type Li-Ion Battery by Complexation-Assisted Solvent Extraction

“…Figure 5 presents XRD patterns of recovered cathode powder and leached residue. The XRD pattern of recovered cathode powder shows several reflection peaks which match with previously reported pure single phase of LiNi 1/3 Co 1/3 Mn 1/3 O 2 [52]. Comparing with the pattern of reported pure single phase, there are many noises in the patterns of recovered cathode powder because of impurity from spent LIBs.…”

Impact of Synthesis Chelation on the Crystallography and Capacity of Li-Rich Li1.2Ni0.13Mn0.54Fe0.13O2 Cathode Particles

“…With CR found to explain the capacity trends of the synthesized powders in Figure , the a priori absence of severe cation mixing correlates well with similar capacities in powders made at the same CR with a weak pH dependence (columns in Figure ). Much lower steady-state capacity of LNMFO-42 compared to LNMFO-72 and LNMFO-92 all synthesized at CR = 2:1 (Figure ) can be explained by the nonideal I (003) /I (104) = 1.02 of LNMFO-42 synonymous of greater cation mixing. ,, …”

Implicit Interpretation of Indonesian Export Bans on LME Nickel Prices: Evidence from the Announcement Effect

“…This is a key argument behind the long-term bullish nickel narrative as a market consensus. Battery technology has continued to evolve from NCM111 (LiNi 1/3 Co 1/3 Mn 1/3 O 2 ) to NCM811 (LiNi 0.8 Co 0.1 Mn 0.1 O 2 ) batteries, implying an increase in nickel content; an exception is LFP (Lithium Iron Phosphate: LiFePO 4 ) batteries, which do not contain nickel but are popular in China (Hu et al 2020). As the nickel element is essential, this can contribute to specific power with manganese and cobalt ion.…”

“…As the nickel element is essential, this can contribute to specific power with manganese and cobalt ion. However, the increase in nickel content may sacrifice the structural stability and safety performance of NCM111 (Hu et al 2020). Given the EV industry is relatively young, it is not a surprise that the demand for nickel is growing continuously.…”