Tin-based amorphous oxide: A high-capacity lithium-ion-storage material
Tin-based amorphous oxide: A high-capacity lithium-ion-storage material
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DOI：
10.1126/science.276.5317.1395
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发表时间：
1997-05-30
期刊：
影响因子：
56.9
通讯作者：
Miyasaka, T
中科院分区：
文献类型：
--
作者：
Idota, Y;Kubota, T;Miyasaka, T
一种金属氧化物形式的高容量储锂材料已被合成，它可以替代目前广泛用作锂离子可充电电池负极（阳极）的碳基锂嵌入材料。这种锡基非晶复合氧化物（TCO）含有Sn(II)-O作为锂嵌入的活性中心以及其他玻璃形成元素，这些元素构成了一个氧化物网络。当与钴酸锂阴极配合时，TCO阳极在充放电循环后仍能保持比碳族材料高50%以上的可逆锂吸附比容量。锂 - 7核磁共振测量证明了在充电状态下锂保持高离子态，在此状态下TCO每摩尔单位可接受8摩尔锂离子。
A high-capacity lithium-storage material in metal-oxide form has been synthesized that can replace the carbon-based lithium intercalation materials currently in extensive use as the negative electrode (anode) of lithium-ion rechargeable batteries. This tin-based amorphous composite oxide (TCO) contains Sn(II)-O as the active center for lithium insertion and other glass-forming elements, which make up an oxide network. The TCO anode yields a specific capacity for reversible lithium adsorption more than 50 percent higher than those of the carbon families that persists after charge-discharge cycling when coupled with a lithium cobalt oxide cathode. Lithium-7 nuclear magnetic resonance measurements evidenced the high ionic state of lithium retained in the charged state, in which TCO accepted 8 moles of lithium ions per unit mole.