A nano-truncated Ni/La doped manganese spinel material for high rate performance and long cycle life lithium-ion batteries

Abstract

Spinel LiMn2O4 cathode material provides high energy and low cost, but suffers from poor cycle performance and rate capability owing to Mn dissolution and Jahn-Teller distortion. Herein, our design concept...

Scope and significance of transition metal oxide nanomaterials for next-generation Li-ion batteries

“…74 Several groups have worked on stabilizing this disproportionation redox issue by employing Ni in the structure alongside the minimal doping of other elements. 5,[75][76][77][78] The final material with the formula of Li x-Ni 0.5 Mn 1.5 O 4 (LNMO) improves the operating voltage up to B4.8 V, where some works reported up to B5 V in half-cell testing scenarios. 44,73,79 Single-crystal LNMO spinel materials by Liu et al have shown superior cycling performance, retaining up to B99% of capacity cycling at higher rates for 2000 cycles.…”

“…26,50,53,[91][92][93][94][95] Many researchers have recently shifted their attention toward nanomaterials, where the material exists in the nanoscale dimension o 1 mm or one of its critical facets grown in a direction, neglecting other dimensional facets in the nanoregime. 9,77,96,97 Nanomaterials (NM) have the advantage of being grown into a monodisperse, single-crystal morphology from the bottom-up by arranging the atoms perfectly or deconstructing microparticles by applying external energy. 98,99 Researchers can synthesize S.C. materials for cathode materials at higher calcination temperatures utilizing existing precursor morphology.…”