Enhanced electrochemical properties of Li[Ni0.5Co0.2Mn0.3]O2 cathode by surface coating using LaF3 and MgF2

被引：32

作者：

Song, Han Gab ^{[1
]}

Kim, Seuk Buom ^{[1
]}

Park, Yong Joon ^{[1
]}

机构：

[1] Kyonggi Univ, Dept Adv Mat Engn, Suwon 443760, Gyeonggi Do, South Korea

来源：

JOURNAL OF ELECTROCERAMICS | 2012年 / 29卷 / 02期

关键词：

Surface coating; Electrochemical properties; Cathode; Lithium battery; LITHIUM-ION BATTERIES; POSITIVE ELECTRODE; PERFORMANCE; LICO1/3NI1/3MN1/3O2; LINI1/3CO1/3MN1/3O2; LINI0.8CO0.2O2; IMPROVEMENT; STABILITY; CAPACITY;

D O I：

10.1007/s10832-012-9747-y

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

LaF3 and MgF2 were introduced for the surface modification of an Li[Ni0.5Co0.2Mn0.3]O-2 electrode. The rate capability, cyclic performance, phase stability at a high voltage range, and thermal stability of pristine and coated electrodes were characterized. Surface modification with both coating materials, LaF3 and MgF2, enhanced the rate capability and cyclic performance. The LaF3 and MgF2 coatings also suppressed the structural instability during cycling in the high voltage range (4.8-3.0 V). This implies that both fluoride coating layers successfully protected the Li[Ni0.5Co0.2Mn0.3]O-2 electrode from the acidic electrolyte. However, the MgF2 coating improved the thermal stability of the Li[Ni0.5Co0.2Mn0.3]O-2 electrode more effectively than the LaF3 coating.

引用

页码：163 / 169

页数：7

共 37 条

[1] Thermal stability and performance studies of LiCo1/3Ni1/3Mn1/3O2 with phosphazene additives for Li-ion batteries [J].

Ahn, Seyoung ;

Kim, Hyun-Soo ;

Yang, Sunhye ;

Do, Jung Yun ;

Kim, Byung Hwa ;

Kim, Ketack .

JOURNAL OF ELECTROCERAMICS, 2009, 23 (2-4) :289-294

[2]

Cho J, 2001, ANGEW CHEM INT EDIT, V40, P3367, DOI 10.1002/1521-3773(20010917)40:18<3367::AID-ANIE3367>3.0.CO

[3]

2-A

[4] Role of chemical and structural stabilities on the electrochemical properties of layered LiNi1/3Mn1/3Co1/3O2 cathodes [J].

Choi, J ;

Manthiram, A .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (09) :A1714-A1718

[5] Effect of rare earth elements doping on structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 for lithium-ion battery [J].

Ding, Yanhuai ;

Zhang, Ping ;

Jiang, Yong ;

Gao, Deshu .

SOLID STATE IONICS, 2007, 178 (13-14) :967-971

[6] Surface modification of LiNi0.8Co0.2O2 with La2O3 for lithium-ion batteries [J].

Fey, GTK ;

Muralidharan, P ;

Lu, CZ ;

Cho, YD .

SOLID STATE IONICS, 2005, 176 (37-38) :2759-2767

[7] Cathode materials: A personal perspective [J].

Goodenough, John B. .

JOURNAL OF POWER SOURCES, 2007, 174 (02) :996-1000

[8] Comparison of AlPO4- and Co3(PO4)2-coated LiNi0.8Co0.2O2 cathode materials for Li-ion battery [J].

Hu, Guo-Rong ;

Deng, Xin-Rong ;

Peng, Zhong-Dong ;

Du, Ke .

ELECTROCHIMICA ACTA, 2008, 53 (05) :2567-2573

[9] A first principles investigation of new cathode materials for advanced lithium batteries [J].

Jeon, Young-Ah ;

Kim, Sung-Kwan ;

Kim, Yang-Soo ;

Won, Dae-Hee ;

Kim, Byung-Il ;

No, Kwang-Soo .

JOURNAL OF ELECTROCERAMICS, 2006, 17 (2-4) :667-671

[10] Enhancing the rate capability of high capacity xLi2MnO3 • (1-x)LiMO2 (M = Mn, Ni, Co) electrodes by Li-Ni-PO4 treatment [J].

Kang, Sun-Ho ;

Thackeray, Michael M. .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (04) :748-751

← 1 2 3 4 →