摘要
通过固相烧结工艺,制备了铝掺杂的Li Mn2O4锂离子电池正极材料。其中球型化及鳞块状的Li Mn2O4分别由Al共沉积的锰氧化物(CMO)前驱体及电解二氧化锰(EMD)前驱体制备。通过X射线衍射仪、扫描电子显微镜、电感耦合等离子光谱仪及方型铝壳全电池充放电测试等手段对试样的物化指标进行了测试。结果表明两组试样都为纯相,同时以CMO为前驱体制备的Li Mn2O4材料具备较好的球型度,更高的振实密度以及更优异的电化学性能。
AI doped LiMn204 （LMO） cathode material for lithium ion battery was synthesized using two different Mn-precursors through solid-state sintering process. Spherical LMO was synthesized from Al-doped chemically-coprecipitated manganese oxide （CMO）, and flake-type LMO was prepared from electrolytic manganese dioxide （EMD）. To compare their difference, the samples were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, inductive coupled plasma emission spectrometer （ICP） and fabricated into prismatic battery to investigate their physical and electrochemical properties. The results show that no impurities phase exist in the products. The powder from CMO displays a good sphericity, a higher tap density, and better electrochemical properties.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2014年第11期2584-2587,共4页
Rare Metal Materials and Engineering
基金
Science and Technology Project of Beijing(Z111103055311072)
National Key New Product(2012GRA00066)
