| 掺铬锂锰氧化物的制备和性能研究 |
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| 引用本文： | 吕东生,聂红光,罗穗莲,李伟善,邱仕洲. 掺铬锂锰氧化物的制备和性能研究[J]. 中国锰业, 2001, 19(1): 4-7 |
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| 作者姓名： | 吕东生 聂红光 罗穗莲 李伟善 邱仕洲 |
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| 作者单位： | 1. 华南师范大学化学系，广东 广州 510631
2. 广州电池厂，广东 广州 510253 |
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| 基金项目： | 广州市科委资助课题（98-Z-077-01） |
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| 摘 要： | 用熔盐法制备出掺铬的尖晶石锂锰氧化物LiCr
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| 关 键 词： | 铬掺杂 锂锰氧化物 晶胞常数 放电容量 循环稳定性 制备 锂离子电池 |
| 文章编号： | 1002-4336(2001)01-0004-04 |
| 修稿时间： | 2000-12-11 |
Studies on Synthesis andPerformances of Chromium-doped Lithium Manganese Dioxide |
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| Abstract: | Chromium-doped lithium manganese oxidesLiCrxMn2-xO4(x=0，0.03，0.16)were prepared by solid-state reaction method and some physical and chemical performances of the products were studied. The oxidation states of manganese in the products decreased with increasing the doped amount of chromium. All the products had a spinel structure. The lattice parameter of the product with x=0.03(a=8.234Å)was almost the same as that of the product without chromium (a=8.235Å)，but that of the product with x=0.16 was lower (a=8.223Å). The cycling stability of the products increased with the doped amount of chromium, with the capacity fade of 34.5，17.5，4.2%， for x=0，0.03，0.16 respectively. However, the first capacity decreased rapidly, 97.9，94.5，73.2 mA.h/g for x=0，0.03，0.16 respectively. |
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| Keywords: | chromium doped lithium manganese oxide lattice parameter discharge capacity cycle stability |
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