Improvement of Electrochemical Performance of Manganese-based Lithium-Rich Cathode Materials for Lithium-ion Battery

近年来，锂离子电池富锂锰基正极材料xLi2MnO3•（1-x）LiMO2（M=Mn，Co，Cr，Ni等）由于具有较高的比容量（≥250mAh/g）、热稳定性好、成本低廉以及对环境友好等优点，引起了研究者的广泛关注和研究。本论文选择Li1.14Ni0.18Mn0.62O2富锂锰基正极材料作为研究对象，采用一种简单的熔融盐法，以改善电化学性能为目标，对于熔融盐的选择、煅烧温度及时间的控制、熔融盐用量等条件进行研究，调控了材料的结构并提高了电化学性能；然后通过使用新型粘结剂，抑制了该材料的电压衰减，进一步提高了电化学性能。 1．分别采用LiCl、NaCl、KCl作为熔融盐，通过改变温度...Recently, layered manganese-based lithium-rich cathode matierials with a formula of xLi2MnO3•(1-x)LiMO2 (M=Mn, Ni, Co, Cr et al) draw attention of researchers due to the exceptional high capacity, low cost, thermo stablility and environmental friendliness. In this work, Li1.14Ni0.18Mn0.62O2 has been synthesized by a molten salt method. The experiment conditions, such as molten salt, sinterin...学位：工学硕士院系专业：能源学院_能源化工学号：3242013115230