Preparation of high voltage spinel LiNi_(0.5)Mn_(1.5)O_4 cathode material using polymer-assisted co-precipitation procedure

摘要

Cathode material LiNi_(0.5)Mn_(1.5)O_4 was synthesized via oxalate co-precipitation process using LiCl,NiCl_2-6H_2O and MnCl_2-4H_2O as raw materials, oxalate as precipitant. The effects of calcining temperature and polymer-assisted during the synthetic process on the performance of the products were analyzed. When calcining at 700°C for 10h and with assistance of polyacrylic acid as dispersive, the synthesized product had cubic spinel structure, uniform particle size and the aggregations of particle was reduced.