Solution combustion synthesis and enhanced electrochemical performance Li1.2Ni0.2Mn0.6O2 nanoparticles by controlling NO3–/CH3COO– ratio of the precursors

Lithium-rich layer oxide Li 1.2 Ni 0.2 Mn 0.6 O 2 nanoparticles were fabricated through solution combustion synthesis by controlling NO 3 – /CH 3 COO – ratio of the precursors. The relationships between the NO 3 – /CH 3 COO – ratio and structure as well as electrochemical performance of Li 1.2 Ni 0.2 Mn 0.6 O 2 nanoparticles are investigated. XRD reveals that Li 1.2 Ni 0.2 Mn 0.6 O 2 nanoparticles obtained with a suitable NO 3 – /CH 3 COO – ratio of 3:1 (LLO-3N1A) is composed of the smallest nanocrystallite of 18   nm. SEM reflects that the average primary particles of LLO-3N1A are the smallest with a size of 35   nm. Those unique characteristic guarantee the excellent electrochemical performance of LLO-3N1A. LLO-3N1A exhibits a specific capacity of 252.3   mA   h   g −1 at 0.1   C. In addition, LLO-3N1A also shows best rate capability among the four prepared Li 1.2 Ni 0.2 Mn 0.6 O 2 samples.