Effects of the composition on the properties of nickel-aluminum layered double hydroxide/carbon (Ni-Al LDH/C) composite fabricated by liquid phase deposition (LPD)
Effects of the composition on the properties of nickel-aluminum layered double hydroxide/carbon (Ni-Al LDH/C) composite fabricated by liquid phase deposition (LPD)
复制标题
DOI：
10.1016/j.jpowsour.2012.10.048
复制
发表时间：
2013-03-01
影响因子：
9.2
通讯作者：
Mizuhata, Minoru
中科院分区：
文献类型：
--
作者：
Beleke, Alexis Bienvenu;Higuchi, Eiji;Mizuhata, Minoru
报道了用液相沉积(LPD)法制备镍铝层状双氢氧化物/碳(Ni-Al LDH/C)复合材料作为镍基正极材料的优化工艺。在保持溶液组成和碳含量不变的情况下，考察了不同总体积的反应溶液中乳酸脱氢酶含量对复合材料性能的影响。衍射图表明，随着LDH含量的增加，复合材料的结晶度增加。重量学研究表明，沉淀量与反应溶液的总体积之间没有相关性。电感耦合等离子体原子发射光谱(ICPAES)分析表明，LDH含量最高的样品具有最佳的Al3+/(Al3++Ni2+)比。优化后的组成得到了高性能的正极材料；1.0C倍率下的高放电容量(>；390mAhg(Cop)(-1))，2.0C倍率下的良好循环寿命超过300次，以及良好的电化学稳定性。(C)2012爱思唯尔B.V.保留所有权利。
We report the optimized preparation by liquid phase deposition (LPD) of nickel aluminum layered double hydroxide/carbon (Ni-Al LDH/C) composites as nickel-based cathode materials. We investigate the influence of the LDH content on the properties of the composites prepared with various total volumes of the reaction solution while the solution composition and the amount of carbon are maintained constant. Diffraction patterns show that the crystallinity of the composite increases with increasing the LDH content. Gravimetric studies indicate that there is no correlation between the amount of the deposit and the total volume of the reaction solution. Inductively coupled plasma-atomic emission spectroscopy (ICP-AES) reveals that the optimal Al3+/(Al3+ + Ni2+) is obtained for the sample with the highest LDH content. The optimized composition results in high performance cathode materials; a high discharge capacity (>390 mAh g(comp)(-1)) at the 1.0 C-rate, a good cycle life at 2.0 C-rate over 300 cycles and excellent electrochemical stability. (C) 2012 Elsevier B.V. All rights reserved.