Enthalpy of formation of Li1+xMn2-xO4 (0 < x < 0.1) spinel phases

被引：26
作者：
Cupid, Damian M. [1 ]
Reif, Alexandra [1 ]
Seifert, Hans J. [1 ]
机构：
[1] Karlsruhe Inst Technol, Inst Appl Mat IAM AWP, D-76344 Eggenstein Leopoldshafen, Germany
来源：
THERMOCHIMICA ACTA | 2015年 / 599卷
关键词：
Li1+xMn2-xO4; Spinel; Oxide solution calorimetry; Enthalpy of formation; Lithium-ion battery; CATHODE ACTIVE MATERIAL; MN-O SPINEL; STABILITY; PERFORMANCE; DIAGRAM;
D O I：
10.1016/j.tca.2014.11.003
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The enthalpies of formation of Li1-xMn2-xO4 (0 < x < 0.1) spinel phases were measured using high temperature oxide solution calorimetry in a sodium molybdate solvent at 701 C. One commercially available LiMn2O4 powder and two Li1-xMn2-xO4 samples synthesized using the sol-gel method were used for the measurements. The enthalpies of formation of the spinels from the binary constituent oxides and from the elements become more exothermic with increasing lithium content and increasing average oxidation state of the manganese cation in the range 0 < x < 0.1. Additionally, the lithium-rich boundary of the Li1-xMn2-xO4 phase for 0 < x < 0.1 was re-investigated using differential thermal analysis combined with thermogravimetric analysis. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：35 / 41
页数：7
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