Understanding the nature of low-potential Li uptake into high volumetric capacity molybdenum oxides
Understanding the nature of low-potential Li uptake into high volumetric capacity molybdenum oxides
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DOI：
10.1149/1.1390704
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发表时间：
1998-12-01
影响因子：
--
通讯作者：
Nazar, LF
中科院分区：
文献类型：
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作者：
Leroux, F;Goward, GR;Nazar, LF
一种简单的方法来制备（Na0.25MoO3）提供了一种材料，该材料作为锂离子电池的负极显示出非常好的性能。低于300 mV的低电位Li插入与初始结构的显著转变相关，导致非晶材料，其在3.0-0.005 V的电压窗口中表现出优异的循环性，具有940 mA/g的高可逆比容量（4000 mAh/cm（3）的体积容量）。这是第一次，两个互补的工具，Li-7核磁共振和X射线吸收光谱，表明在低电位下插入Li，形成一个复杂的非晶复合材料，由LiMo-低氧化物与氧化锂密切接触组成。(C)1998年电化学学会。S1099-0062（98）02-049-5。All rights reserved.
A simple method to prepare (Na0.25MoO3) provides a material that displays very good properties as negative electrodes in lithium-ion batteries. Low- potential Li insertion below 300 mV is associated with dramatic transformation of the initial structure, leading to an amorphous material which exhibits excellent cyclability with a high reversible specific capacity of 940 mA/g in the voltage window of 3.0-0.005 V (volumetric capacity of 4000 mAh/cm(3)). For the first time, two complementary tools, Li-7 nuclear magnetic resonance and X-ray absorption spectroscopy, demonstrate that on Li insertion at low potential, a complex amorphous composite is formed consisting of a LiMo-suboxide in intimate contact with lithium oxide. (C) 1998 The Electrochemical Society. S1099-0062(98)02-049-5. All rights reserved.