| Title | Synthesis of high tap-density layered LiMn0.4Ni0.4Co0.2O2 cathode material |
| Authors | Dai, Kehua Wang, Yinjie He, Ping Xie, Yanting Qi, Lu |
| Issue Date | 2006 |
| Publisher | 开云app体育 学报 自然科学版 |
| Citation | Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis.2006,42,(SUPPL.),34-38. |
| Abstract | Uniform spherical metal hydroxide Mn0.4Ni0.4Co0.2(0H)2 was prepared via improved hydroxide precipitation, and then LiMn0.4Ni0.4Co0.2O2 was prepared by mixing this metal hydroxide with 5% excess LiOH by heat-treatment. It is shown that the product with the high tap-density of 2.3 g??cm-3 can be prepared under relatively extensive condition via the addition of F- in system. The product was characterized using X-ray diffraction (XRD), scanning electron microscope (SEM) and charge-discharge tests. The SEM results show that the product has a good morphology, and the XRD studies demonstrate that the material has a well-ordered layered structure without impurity phase. The initial charge and discharge capacities are 185 and 164 mAh??g-1 at a voltage range from 3.0 to 4.0 V and a current density of 30 mA??g-1, and 90% of the discharge capacity is retained after 50 charge-discharge cycles. |
| URI | http://hdl.handle.net/20.500.11897/327725 |
| ISSN | 0479-8023 |
| Indexed | EI |
| Appears in Collections: | 待认领 |
