将Al72 Ni13.4 Co14.6十次准晶作为前驱体合金,通过去合金化法制备了CoO/NiO/CoNi微纳复合材料作为锂离子电池负极材料。采用X射线衍射( XRD)、扫描电镜( SEM)等材料结构分析方法对产物进行表征。通过恒电流充放电技术研究该电极材料的电化学性能,结果表明,在200 mA·g-1电流密度下,首次充放电容量为417 mAh·g-1和617 mAh·g-1,库伦效率为67.6%,经过500圈循环后放电容量仍保持为585 mAh·g-1,表现出良好的循环性能。
Al76 Ni13. 4 Co14. 6 decagonal quasicrystals was used as a precursor alloy and transformed into the unique CoO/NiO/CoNi three dimension structure by a fancy one-step dealloying method. X-ray diffraction ( XRD) and scanning electron microscopy ( SEM) were used to examine the structure of the products. Electrochemical performance of as prepared CoO/NiO/CoNi was evaluated by galvanostatic cycling, the results show that the initial charge/discharge capacity is 417/617 mAh · g-1 at current density 200 mA·g-1 and the corresponding coulombic efficiency is about 67. 6%. A high capacity of 585 mAh·g-1 is obtained with the high capacity retention up to 500 cycles in the range 0. 01-3. 0 V, which indicates that the as prepared CoO/NiO/CoNi endowing good cycling performance.
参考文献
| [1] | Hao Bin Wu;Jun Song Chen;Huey Hoon Hng.Nanostructured metal oxide-based materials as advanced anodes for lithium-ion batteries[J].Nanoscale,20128(8):2526-2542. |
| [2] | Dongdong Li;Liang-Xin Ding;Suqing Wang.Ultrathin and highly-ordered CoO nanosheet arrays for lithium-ion batteries with high cycle stability and rate capability[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,201416(16):5625-5630. |
| [3] | B. Phung Ngoc;C. Geantet;J. A. Dalmon.Quasicrystalline Structures as Catalyst Precursors for Hydrogenation Reactions[J].Catalysis Letters,20091/2(1/2):59-69. |
| [4] | Limin Wang;Liqun Ma;Chaoli Ma.Formations of amorphous and quasicrystal phases in Ti-Zr-Ni-Cu alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20031/2(1/2):234-240. |
| [5] | Feng Li;Qing-Qing Zou;Yong-Yao Xia.CoO-loaded graphitable carbon hollow spheres as anode materials for lithium-ion battery[J].Journal of Power Sources,20082(2):546-552. |
| [6] | Yongming Sun;Xianluo Hu;Wei Luo.Self-assembled mesoporous CoO nanodisks as a long-life anode material for lithium-ion batteries[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,201227(27):13826-13831. |
| [7] | Sun, Xiaolei;Si, Wenping;Liu, Xianghong;Deng, Junwen;Xi, Lixia;Liu, Lifeng;Yan, Chenglin;Schmidt, Oliver G..Multifunctional Ni/NiO hybrid nanomembranes as anode materials for high-rate Li-ion batteries[J].Nano Energy,2014:168-175. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%