High‐Power and High‐Energy Cu‐Substituted Li_xNi_0.88–yCo_yMn_0.1Cu_0.02O₂ Cathode Material for Li‐Ion Batteries

Abstract

This article discusses both practical and theoretical aspects of operation of Li‐ion batteries. Herein, structural, transport, and electrochemical properties as well as electronic structure of Cu‐substituted LiNi0.9–y–z Co y Mn0.1Cu z O2 mixed oxides—candidate cathode materials for Li‐ion batteries—of the material are reported. The presented data show that copper has a beneficial effect on electronic transport properties, lithium diffusion, and cathodes performance. Battery on the base on the developed LiNi0.88–y Co y Mn0.1Cu0.02O2 cathode materials is characterized by high voltage, high capacity, and high rate capability, which guarantees high energy and power densities. The correlation between the results of electronic structure calculations, the transport properties, and electrochemical behavior of Li x Ni0.58Co0.3Mn0.1Cu0.02O2–δ cathode is shown.

Nickel‐Based Materials for Advanced Rechargeable Batteries

“…Dopants typically play a tuning role at the crystal level such as changing metal-oxygen covalent bond and lattice parameters, and inhibiting cation migration and the layer-to-spinel transition, thereby enhancing the stability of electrode materials by reducing their structural degradation. Single element (Ti, [236,237] B, [171] Mg, [211] Al, [170,237] Fe, [169] Mn, [168] W, [172] Zr, [238] Mo, [239] F, [240] Cu [241] ) or polyanions (BO 3 3-[242] ) doping and co-doping (using combinations of single elements and/or polyanions, such as K/Ti, [243] Al/Ti, [244] Mn/PO 4 3− , [173] and W/BO 3 3- [245] ) have been utilized to improve the structural stability and Li + intercalation stability of anode materials. For example, B-doped Li[Ni 0.878 Co 0.097 Al 0.015 B 0.01 ]O 2 (B-NCA88) was prepared using a coprecipitation method with B 2 O 3 as the B dopant followed by calcining at 730 °C for 10 h under O 2 atmosphere.…”

Recent Advances in Enhanced Performance of Ni‐Rich Cathode Materials for Li‐Ion Batteries: A Review

“…Depending on the type of doping element and crystal structure, modified cathode materials have the ability to ameliorate the structural stability, thermal stability as well as cyclic performance. [163,164] Figure 13 exhibits the substantial enhancement of cyclic performance upon doping of NCM811 with different dopants. Ta displays better cyclic behavior among the tested dopants.…”