Nanosized NaNi_(0.5)Mn_(0.3)Co_(0.2)O2 as a cathode material for sodium-ion batteries

摘要

Numerous cathode materials for sodium-ion batteries are direct analogues of those used in lithium-ion batteries. Moreover, some of them seem particularly attractive because their lithium-containing counterparts appear much successful in applications and are commercialized. This is especially true for layered single, binary and ternary oxides of nickel, manganese and cobalt, which are widely employed in lithium-ion batteries readily available on the market. In this paper, we present the data on synthesis, characterization and electrochemical testing of nanosized NaNi_(0.5)Mn_(0.3)Co_(0.2)O2 and prove that this material is prospective for applications, being able to deliver the specific capacity of 156 mAh/g at low current loads, sustain currents of 2370 mA/g and withstand long-term cycling by 105 cycles.