采用固相法合成系列Li-Mn-Ti复合氧化物(理论化学式为LiTi<,x>Mn<,2-x>p<,4>,0≤x≤1);利用热重-差示扫描量热法(TG-DSC)、X射线衍射(XRD)和扫描电子显微镜(SEM)等对其结构和形貌进行表征,并通过酸浸实验考察其在弱酸性介质中的稳定性.结果表明:当x≤0.5时,Ti能完全地纳入尖晶石晶格,并使晶胞参数增大、晶粒变小;Li-Mn-Ti复合氧化物酸浸前、后能够保持尖晶石的结构和形貌,具有结构稳定性,但其化学稳定性还有待进一步提高.
参考文献
| [1] | 陈婷,闫书一,康自华.我国盐湖卤水提锂的研究进展[J].盐业与化工,2007(02):19-21. |
| [2] | 陈白珍,马立文,石西昌,徐徽,杨喜云.锂离子筛前驱体制备方法的研究进展[J].无机盐工业,2009(07):1-4. |
| [3] | HUNTER J C .Preparation of a new crystal form of manganese dioxide:λ-MnO《,2》[J].Journal of Solid State Chemistry,1981,39(02):142-147. |
| [4] | OOI K;MIYAI Y;SAKAKIHARA J .Mechanism of Li+ insertion in spinel-type manganese oxide-Redox and ion-exchange reactions[J].Langmuir,1991,7(06):1167-1171. |
| [5] | FENG Q;MIYAI Y;KANOH H .OOI IC Li+ extraction/insertion with spinel-type lithium manganese oxides-Characterization of redox-type and ion-exchange-type sites[J].Langmuir,1992,8(07):1861-1867. |
| [6] | Wang, L;Meng, CG;Ma, W .Study on Li+ uptake by lithium ion-sieve via the pH technique[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2009(1/3):34-39. |
| [7] | Wang L;Meng CG;Han M;Ma W .Lithium uptake in fixed-pH solution by ion sieves[J].Journal of Colloid and Interface Science,2008(1):31-40. |
| [8] | 董殿权,张凤宝,张国亮,刘亦凡.Li4Ti5O12的合成及对Li+的离子交换动力学[J].物理化学学报,2007(06):950-954. |
| [9] | 钟辉.偏钛酸型锂离子交换剂的交换性质及从气田卤水中提锂[J].应用化学,2000(03):307-309. |
| [10] | SUN Bin;SHEN Guo-pei;HU Yan-long .High-rate capability of spinel LiNi《,0.05》Mn《,1.95》O《,4》 cathode for Li-ion batteries prepared via coprecipitated precursor[J].Transactions of Nonferrous Metals Society of China,2007,17(z1):s937-s940. |
| [11] | KAKUDA T;UEMATSU K;TODA K;SATO M .Electrochemical performance of Al-doped LiMn《,2》O《,4》 prepared by different methods in solid-state reaction[J].Journal of Power Sources,2007,167(02):499-503. |
| [12] | C. Polo Fonseca;M.A. Bellei;F.A. Amaral;S.C. Canobre;S. Neves .Synthesis and characterization of LiM_xMn_(2-x)O_4 (M = Al, Bi and Cs ions) films for lithium ion batteries[J].Energy conversion & management,2009(6):1401-1410. |
| [13] | A new solid-state process for synthesis of LiMn_(1.5)Ni_(0.5)O_(4-δ) spinel[J].Journal of Power Sources,2010(15):p.5005. |
| [14] | 大连理工大学无机化学教研室.无机化学[M].北京:高等教育出版社,2004:541-543. |
| [15] | OHZUKU T;KITAGAWA M;HIRAI T .Electrochemisty of manganese dioxide in lithium nonaqueons cell[J].Journal of the Electrochemical Society,1990,137(03):769-775. |
| [16] | Yang SH.;Middaugh RL. .Redox reactions of cobalt, aluminum and titanium substituted lithium manganese spinel compounds in lithium cells[J].Solid state ionics,2001(1/2):13-25. |
| [17] | Su YC.;Zou QF.;Wang YW.;Yu P.;Liu JY. .Structure and electrochemical behavior of LiCryMn2-yO4 compositions[J].Materials Chemistry and Physics,2004(2/3):302-307. |
| [18] | 廖立兵;李国武.X射线衍射方法与应用[M].北京:地质出版社,2008:113-114. |
| [19] | Simon DR;Kelder EM;Wagemaker M;Mulder FM;Schoonman J .Characterization of proton exchanged Li4Ti5O12 spinel material[J].Solid state ionics,2006(26/32):2759-2768. |
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%