LiMnPO4 as the cathode for lithium batteries
LiMnPO4 as the cathode for lithium batteries
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DOI：
10.1149/1.1475195
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发表时间：
2002-06-01
影响因子：
--
通讯作者：
Tohda, M
中科院分区：
文献类型：
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作者：
Li, GH;Azuma, H;Tohda, M
橄榄石 LiMnPO4 采用新的合成方法生产。在 4.1 V（相对于锂）的电压下，锂可逆地萃取和插入到橄榄石 LiMnPO4 中，这表明该材料是锂离子电池阴极的有前途的候选材料。当充电至 4.5 V 时，大约。第一次充电期间，每个配方单元可提取 0.94 Li。当充电至 4.8 V 时，第一次放电时输出 152 mAh/g。室温下的总可逆容量达到140 mAh/g。确定了一个平坦的两相区域，其开路电压类似于 4.1 V。通过热重分析和差示扫描量热法评估带电阴极的热稳定性。 (C) 2002 年电化学协会。
Olivine LiMnPO4 has been produced using a new synthetic method. Reversible extraction and insertion of lithium into olivine LiMnPO4 at 4.1 V vs. lithium demonstrated that this material is a promising candidate for the cathode in lithium-ion batteries. When charged to 4.5 V, ca. 0.94 Li per formula unit can be extracted during the first charge. When charged to 4.8 V, 152 mAh/g was delivered in the first discharge. An overall reversible capacity of 140 mAh/g has been attained at room temperature. A flat two-phase region with open-circuit voltage similar to4.1 V was identified. The thermal stability of the charged cathode was evaluated by thermogravimetric analysis and differential scanning calorimetry. (C) 2002 The Electrochemical Society.