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锂离子电池层状结构三元正极材料的研究进展
(中山大学化学与化学工程学院
广州
510275
?/p>
摘要
为改进锂离子电池的性能,化学家们一直致力于电极材料的研究。其中,正极材料
的研究更是重中之重,各种正极材料层出不穷,而层状结构三元正极材?/p>
LiNi
x
Co
y
Mn
1-x-y
O
2
因为具有较高的可逆容量、循环性能好、结构稳定性、热稳定性和相对较低的成本等优点?/p>
近年来成为研究热点?/p>
本文主要简介其结构特点与电化学特性,
并综述其制备方法的改良和
改性手段,并分析该材料目前存在的问题和对其未来发展做一个设想?/p>
关键?/p>
锂离子电?/p>
层状结构
LiNi
x
Co
y
Mn
1-x-y
O
2
研究进展
Research progress in layered structural
ternary cathode
materials for lithium ion batteries
Abstract
To improve the properties of Li-ion Battery, the chemist have been
working
for
suitable
electrode
materials.
Among
them,
the
study
of
cathode
materials
is a top priority. There are a variety of cathode material. And in recent years,
Layered
Structural
LiNi
x
Co
y
Mn
1-x-y
O
2
as a
cathode has been a hot topic, because it has
a lot of advantages, such as, it has a high reversible capacity, good cycle
performance,
structural
stability,
thermal
stability
and
relatively
low
cost,
etc.
This
paper
is
about
the
introduction
of
its
structural
features
and
electrochemical
characteristics, as well as a review of the improvement and modification means of
their preparation. Finally, there are analysis of the existing problems of the
materials and a vision of its future development.
Key words
lithium ion batteries; layered structure; LiNi
x
Co
y
Mn
1-x-y
O
2
; research
progress
1.
引言
锂离子电池的具有工作电压高、能量密度高、自放电效率低、循环寿命长、无记忆?/p>
应和环保等优点,因此广泛应用于生产生活中。但同时,锂离子电池也存在快充放电性能
差、大电流放电特性不理想、价格偏高、过充放电较危险等缺点,为解决上述问题,科学
家们一直专注于电池材料的研究?/p>