Abstract
Recycling spent Zn–Mn batteries by synthesizing the products with high added value is very active internationally. In this work, we have successfully synthesized the spinel LiMn2O4 cathode materials for rechargeable lithium-ion batteries by simple sol–gel method using the manganese source that is recovered from spent Zn–Mn batteries through hydrometallurgy recycling technology. The influence of sintering temperature on the structure, the morphological properties, and the electrochemical properties of the product is investigated. The results show that spinel LiMn2O4 prepared at 700 °C has the best comprehensive performance. Moreover, the electrochemical performance of spinel LiMn2O4 has been further optimized by Co-ion doping.
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