Electrochemical properties of mixed cathode consisting of μm-sized LiCoO2 and nm-sized Li[Co0.1Ni0.15Li0.2Mn0.55]O2 in lithium rechargeable batteries

被引：12

作者：

Kim, Kwang Man ^{[1
]}

Lee, Sang Hyo ^{[1
]}

Kim, Sanghyo ^{[2
]}

Lee, Young-Gi ^{[1
]}

机构：

[1] ETRI, Res Team Next Generat Energy Technol, Taejon 305700, South Korea

[2] Kyungwon Univ, Coll Bionanotechnol, Songnam 461701, Gyeonggi, South Korea

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2009年 / 39卷 / 09期

关键词：

Electrochemical properties; Rechargeable lithium batteries; Mixed cathode material; Electrode packing density; ION BATTERIES; LAYERED LI(NI1/3CO1/3MN1/3)O-2; PERFORMANCE; TEMPERATURE; CAPACITY; KINETICS; DENSITY; CELLS;

D O I：

10.1007/s10800-009-9828-z

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In order to enhance the utilization of active cathode material in lithium rechargeable batteries, physical mixtures of mu m-sized LiCoO2 (LCO) and nm-sized Li[Co0.1Ni0.15Li0.2Mn0.55]O-2 (LCMNO) were prepared by varying the LCO content, and the physical and electrochemical properties of lithium half-cells utilizing the mixed cathodes were characterized. Our main concern is the packing state between the microparticles and nanoparticles within the electrode, which influences the determination of the electrode density. We found that the electrode composed of 80 wt.% LCO and 20 wt.% LCMNO shows the best performance in capacity retention ratio and high-rate capability, which are comparable to those of LCMNO, due to the superior density in the electrode's packing state over other samples.

引用

页码：1487 / 1495

页数：9

共 20 条

[1] Cobalt dissolution in LiCoO2-based non-aqueous rechargeable batteries [J].

Amatucci, GG ;

Tarascon, JM ;

Klein, LC .

SOLID STATE IONICS, 1996, 83 (1-2) :167-173

[2] Synthesis and characterization of high-density non-spherical Li(Ni1/3Co1/3Mn1/3)O2 cathode material for lithium ion batteries by two-step drying method [J].

Chang, Zhaorong ;

Chen, Zhongjun ;

Wu, Feng ;

Tang, Hongwei ;

Zhu, Zhihong ;

Yuan, Xiao Zi ;

Wang, Haijiang .

ELECTROCHIMICA ACTA, 2008, 53 (20) :5927-5933

[3] Improving the capacity retention of LiCoO2 cycled to 4.5 V by heat-treatment [J].

Chen, ZH ;

Dahn, JR .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (01) :A11-A14

[4] Structural and electrochemical properties of (1-x) Li[Ni0.2Li0.20Mn0.60]O2-xLi[Co0.50Li0.167Mn0.333]O2 for lithium secondary batteries [J].

Hong, YS ;

Park, YJ ;

Ryu, KS ;

Chang, SH ;

Shin, YJ .

JOURNAL OF POWER SOURCES, 2005, 147 (1-2) :214-219

[5] A study on electrochemical characteristics of LiCoO2/LiNi1/3Mn1/3Co1/3O2 mixed cathode for Li secondary battery [J].

Kim, Hyun-Soo ;

Kim, Sung-Il ;

Kim, Woo-Seong .

ELECTROCHIMICA ACTA, 2006, 52 (04) :1457-1461

[6] XAS investigation of inhomogeneous metal-oxygen bond covalency in bulk and surface for charge compensation in li-ion battery cathode Li[Ni1/3Co1/3Mn1/3]O2 material [J].

Kim, MG ;

Shin, HJ ;

Kim, JH ;

Park, SH ;

Sun, YK .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (07) :A1320-A1328

[7] Crystal and electronic structures of superstructural Li1-x[Co1/3Ni1/3Mn1/3]O2 (0≤x≤1) [J].

Koyama, Y ;

Tanaka, I ;

Adachi, H ;

Makimura, Y ;

Ohzuku, T .

JOURNAL OF POWER SOURCES, 2003, 119 :644-648

[8] Effect Of Co3(PO4)2 coating on Li[Co0.1Ni0.15Li0.2Mn0.55]O2 cathode material for lithium rechargeable batteries [J].

Lee, Sang Hyo ;

Koo, Bon Keup ;

Kim, Jin-Chul ;

Kim, Kwang Man .

JOURNAL OF POWER SOURCES, 2008, 184 (01) :276-283

[9] A mixture of LiNi1/3Co1/3Mn1/3O2 and LiCoO2 as positive active material of LIB for power application [J].

Liu, Xingjiang ;

Zhu, Guangyan ;

Yang, Kai ;

Wang, Jiqiang .

JOURNAL OF POWER SOURCES, 2007, 174 (02) :1126-1130

[10] Synthesis, structure, and electrochemical behavior of Li[NixLi1/3-2x/3Mn2/3-x/3]O2 [J].

Lu, ZH ;

Beaulieu, LY ;

Donaberger, RA ;

Thomas, CL ;

Dahn, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (06) :A778-A791

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