Synthesis and electrochemical properties of lithium nickel oxysulfide (LiNiSyO2-y)material for lithium secondary batteries

被引：101

作者：

Park, SH

Sun, YK

Park, KS

Nahm, KS

Lee, YS

Yoshio, M

机构：

[1] Hanyang Univ, Coll Engn, Dept Ind Chem, Sungdong Gu, Seoul 133791, South Korea

[2] Chonbuk Natl Univ, Coll Engn, Sch Chem Engn & Technol, Chonju 561756, South Korea

[3] Saga Univ, Dept Appl Chem, Saga 8408502, Japan

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 11期

关键词：

nickel layered oxides; anion substitution; sol-gel chemistry; electrochemical measurements; lithium ion battery; oxisulfide;

D O I：

10.1016/S0013-4686(02)00023-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The layered oxysulfilde LiNiSyO2-y compounds were synthesized and characterized to investigate the effect Of Sulfur on the electrode performance of LiNiO2. LiNO2 precursors were first synthesized by a sol-gel method using adipic acid as a chelating agent and then doped with sulfur powders by a solid-state reaction under the flow of oxygen to prepare LiNiSyO2-y compounds. Pure LiNiO2 electrode showed a gradual decrease of discharge capacity with cycle number, whereas the capacity retention rate of LiNiSyO2-y electrodes significantly improved. The initial discharge capacity of the LiNiSyO2-y cells was lower than that of LiNiO2 cell and decreased with the increasing content of sulfur substituted in LiNiSyO2-y (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1721 / 1726

页数：6

共 23 条

[1] Electrochemical and thermal behavior of LiNi1-zMzO2 (M = Co, Mn, Ti) [J].