以硝酸镍为原料通过化学氧化法先制备出NiOOH,然后与LiOH· H2O、La2O3按一定比例混合均匀,并在空气气氛中低温焙烧制备球形La掺杂LiNiO2正极材料.用TG-DTA、XRD、SEM等手段对材料结构及形貌进行了表征,结果表明600℃焙烧的材料具有更加完整的层状结构,材料由边界长350 nm的不规则颗粒组成,且团聚成直径5 μm的球形颗粒.电化学性能测试表明相比纯LiNiO2,LiNi1-xLax O2具有更高的放电比容量和容量保持率、较好的倍率性能和较小的交流阻抗,说明微量La掺杂增强了LiNiO2的电化学性能.
参考文献
| [1] | 邓姝皓,王玉.聚苯胺/聚四氟乙烯导电复合膜的电化学制备和表征分析[J].材料导报,2012(02):34-39. |
| [2] | 赵浩川,宋杨,郭孝东,钟本和,董静,刘恒.前驱体配料温度对水热法制备LiFePO4的影响[J].物理化学学报,2011(10):2347-2352. |
| [3] | 唐致远,李建刚,薛建军,周征.LiNiO2的制备与改性的探讨[J].电池,2001(01):10-13. |
| [4] | Lai X;Gao D J;Bi J et al.Synthesis of LiNiO2 thin film in LiOH solution by hydrothermal method[J].Journal of Alloys and Compounds,2009,487(01):L30. |
| [5] | ZHONG Sheng-wen,ZHAO Yu-juan,LIAN Fang,LI Yan,HU Yang,LI Pei-zhi,MEI Jia,LIU Qing-guo.Characteristics and electrochemical performance of cathode material Co-coated LiNiO2 for Li-ion batteries[J].中国有色金属学会会刊（英文版）,2006(01):137-141. |
| [6] | Guilmard M;Rougier A;Grune M et al.Effects of aluminum on the structural and electrochemical properties of LiNiO2[J].Journal of Power Sources,2003,115(02):305. |
| [7] | Yang H X;Dong Q F;Hu X H et al.Preparation and characterization of LiNiO2 synthesized from Ni (OH)2 and LiOH @ H2O[J].Journal of Power Sources,1999,79(02):256. |
| [8] | Zhang Y H;Dong X P;Wang G Q et al.Effect of boron additive on electrochemical cycling life of La-Mg-Ni alloys prepared by casting and rapid quenching[J].International Journal of Hydrogen Energy,2007,32(05):594. |
| [9] | Sang Ho Park;Ki Soo Park;Yang Kook Sun;Kee Suk Nahm;Yun Sung Lee;Masaki Yoshio .Structural and electrochemical characterization of lithium excess and Al-doped nickel oxides synthesized by the sol-gel method[J].Electrochimica Acta,2001(8):1215-1222. |
| [10] | Fey G T K;Shiu R F;Subramanian V et al.LiNi0.8Co0.2O2 cathode materials synthesized by the maleic acid assisted solgel method for lithium batteries[J].Journal of Power Sources,2002,103(02):265. |
| [11] | 肖劲,曾雷英,陈召勇,赵浩,彭忠东.离子电池正极材料LiNi0.5Mn0.5O2的合成[J].无机化学学报,2006(04):685-690. |
| [12] | Nishida Y;Nakane K;Satoh T .Synthesis and properties of gallium-doped LiNiO2 as the cathode material for lithium secondary batteries[J].Journal of Power Sources,1997,68(02):561. |
| [13] | R. Moshtev;P. Zlatilova;V. Manev;K. Tagawa .Synthesis of LiNiO_2 in air atmosphere: X-ray diffraction characterization and electrochemical investigation[J].Journal of Power Sources,1996(1):59-66. |
| [14] | Sun YZ;Wan PY;Pan JQ;Xu CC;Liu XG .Low temperature synthesis of layered LiNiO2 cathode material in air atmosphere by ion exchange reaction[J].Solid state ionics,2006(13/14):1173-1177. |
| [15] | Alcantara R;Lavela P;Tirado J L et al.Lithium-nickel citrate precursors for the preparation of LiNiO2 insertion electrodes[J].Chemistry of Materials,1997,9:2145. |
| [16] | Fujita Y;Amine K;Maruta J .LiN1-xCoxCoxO2 prepared at low temperature using β-Ni1-xCoxOOH and either LiNO3 or LiOH[J].Journal of Power Sources,1997,68(01):126. |
| [17] | 杨堂明,李琪,周明堂,乔庆东.锂离子电池正极材料掺杂稀土的研究进展[J].电池,2006(04):317-318. |
| [18] | 蒙冕武;计晓梅;刘庆业 等.稀土掺杂锂电池正极锰酸锂的合成及电化学性能[J].稀有金属材料与工程,2010,39(04):652. |
| [19] | Ding Y H;Zhang P;Jiang Y .Synthesis and electrochemical properties of Li[Ni1/3 Co1/3 Mn1/3]1-x Lax O2 cathode materials[J].Journal of Rare Earths,2007,25(S.2):268. |
| [20] | 梁莉,李琪,乔庆东,李萍.锂离子电池正极材料镍酸锂研究进展[J].无机盐工业,2007(09):9-11,19. |
| [21] | 邓斌,阎杰,张朝帅.LiCoO2掺杂稀土元素研究[J].电池,2003(02):74-76. |
| [22] | 豆志河,张廷安,侯闯.锂离子电池正极材料LiNi0.8Co0.2O2和LiNi0.95Ce0.05O2制备工艺优化[J].中国稀土学报,2004(05):651-655. |
| [23] | Pan JQ;Sun YZ;Wan PY;Wang ZH;Liu XG .Synthesis, characterization and electrochemical performance of battery grade NiOOH[J].Electrochemistry communications,2005(8):857-862. |
| [24] | 田彦文;高虹;翟玉春 等.锂离子电池正极材料LiNiO2的制备和性能研究[J].无机材料学报,2000,15(06):1050. |
| [25] | Fu, XZ;Wang, X;Peng, HF;Ke, FS;Lei, JH;Huang, L;Lin, JD;Liao, DW .Low temperature synthesis of LiNiO2@LiCoO2 as cathode materials for lithium ion batteries[J].Journal of solid state electrochemistry,2010(6):1117-1124. |
| [26] | Wang G X;Zhong S;Bradhurst D H et al.Synthesis and characterization of LiNiO2 compounds as cathodes for rechargeable lithium batteries[J].Journal of Power Sources,1998,76(02):141. |
| [27] | Schoonman J;Tuller H L;Kelder E M .Defect chemical aspects of lithium-ion battery cathodes[J].Journal of Power Sources,1999,81-82:44. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%