An overview of the Li(Ni,M)O2 systems:: syntheses, structures and properties
An overview of the Li(Ni,M)O2 systems:: syntheses, structures and properties
复制标题
DOI：
10.1016/s0013-4686(99)00208-x
复制
发表时间：
1999-01-01
影响因子：
6.6
通讯作者：
Fournès, L
中科院分区：
文献类型：
--
作者：
Delmas, C;Ménétrier, M;Fournès, L
锂镍氧化物衍生物是下一代锂离子电池极具潜力的正极材料。在这种氧化物家族中，某些阳离子部分取代镍显著地改变了它们的性质，因此是开发一种优化的氧化物电极的有吸引力的途径，该电极满足可充电电池应用的苛刻要求。在本文中，兴趣集中在钴，铁，铝和镁的影响，一般讨论阳离子取代对性能的影响，在我们的实验室取得的结果的基础上，回顾。虽然铁取代在实际应用方面似乎并不有趣，但铁穆斯堡尔光谱允许非常精确的表征，有趣的是了解这类材料的一般行为。为了获得最具电化学活性的材料，我们对合成条件进行了优化。详细讨论了取代阳离子的性质、锂离子位置外源阳离子的存在、电化学行为和电化学循环时氧化还原过程之间的关系。提出了后一点与材料合成过程中形成的阳离子分布之间关系的新观点。1999爱思唯尔科学有限公司版权所有。
Lithium nickel oxide derivatives are promising positive electrode materials for the next generation of lithium-ion batteries. Partial substitution of certain cations for nickel in this family of oxides significantly modifies their properties and is therefore an attractive route to develop an optimised oxide electrode which satisfies the demanding requirements for rechargeable battery applications. In this paper the interest is focused on the effect of cobalt, iron, aluminium and magnesium for a general discussion of the effect of cationic substitution on the properties based on a review of results mostly obtained in our laboratories. Although iron substitution does not seem interesting for the practical aspect, iron Mossbauer spectroscopy allows very precise characterisations, interesting to understand the general behaviour of this family of materials. We deal with the optimisation of the synthesis conditions in order to obtain the most electrochemically active materials. The relations between the nature of the substituting cation, the presence of foreign cations in the lithium site, the electrochemical behaviour and the redox processes upon electrochemical cycling are discussed in detail. A new view of the relation between this latter point and the cationic distribution formed during the material synthesis is proposed. (C) 1999 Elsevier Science Ltd. All rights reserved.