阴极
锂(药物)
材料科学
储能
离子
化学工程
高能
能量密度
电池(电)
磷酸钒锂电池
电化学
工程物理
电极
化学
功率(物理)
物理化学
热力学
医学
物理
有机化学
工程类
内分泌学
作者
Leigang Xue,Shu Zhang,Shuli Li,Yao Lü,Ozan Toprakci,Xia Xin,Chen Chen,Yi Hu,Xiangwu Zhang
标识
DOI:10.1016/j.jallcom.2013.07.029
摘要
Lithium-ion batteries have been wildly used in various portable electronic devices and the application targets are currently moving from small-sized mobile devices to large-scale electric vehicles and grid energy storage. Therefore, lithium-ion batteries with higher energy densities are in urgent need. For high-energy cathodes, Li2MnO3–LiMO2 layered–layered (M = Mn, Co, Ni) materials are of significant interest due to their high specific capacities over wide operating potential windows. Here, three Li2MnO3-based cathode materials with α-NaFeO2 structure were prepared by a facile co-precipitation method and subsequent heat treatment. Among these three materials, 0.3Li2MnO3·0.5LiMn0.5Ni0.5O2·0.2LiCoO2 shows the best lithium storage capability. This cathode material is composed of uniform nanosized particles with diameters ranging from 100 to 200 nm, and it could be charged to a high cutoff potential to extract more lithium, resulting in a high capacity of 178 mAh g−1 between 2.0 and 4.6 V with almost no capacity loss over 100 cycles.
科研通智能强力驱动
Strongly Powered by AbleSci AI