Surface modification of Li[Li0.2Ni0.2Mn0.6]O2 nanoparticles with polydopamine-assisted MgF2 coating

被引：18

作者：

Lee, Hye Jin ^{[1
]}

Park, Yong Joon ^{[1
]}

机构：

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

来源：

MATERIALS RESEARCH BULLETIN | 2014年 / 58卷

关键词：

Surfaces; Interfaces; Chemical synthesis; Intercalation reactions; Electrochemical properties; LITHIUM-ION BATTERIES; CATHODE MATERIAL; ELECTROCHEMICAL PROPERTY; SECONDARY BATTERIES; POSITIVE ELECTRODE; IMPROVEMENT; CAPABILITY; PARTICLES; MN; NI;

D O I：

10.1016/j.materresbull.2014.03.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nano-sized Li[Ni0.2Li0.2Mn0.6]O-2 powder is vulnerable to reaction with the electrolyte because it has a wide electrolyte/cathode contact area. In order to avoid this, we modified the surface of the nano-sized Li[Ni0.2Li0.2Mn0.6]O-2 powder by coating it with MgF2. A polydopamine pre-coating layer served as a binding agent for the homogeneous MgF2 coating on the surface of the Li[Ni0.2Li0.2Mn0.6]O-2 nanoparticles. Polydopamine-assisted coating with MgF2 improved the discharge capacity, cyclic performance and thermal stability of the Li[Ni0.2Li0.2Mn0.6]O-2 cathode, possibly by suppressing side reactions between the electrolyte and the cathode. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：169 / 173

页数：5

共 26 条

[1] Nano-sized LiMn2O4 spinel cathode materials exhibiting high rate discharge capability for lithium-ion batteries [J].

Chen, Yingchao ;

Xie, Kai ;

Pan, Yi ;

Zheng, Chunman .

JOURNAL OF POWER SOURCES, 2011, 196 (15) :6493-6497

[2] A breakthrough in the safety of lithium secondary batteries by coating the cathode material with AIPO4 nanoparticles [J].

Cho, J ;

Kim, YW ;

Kim, B ;

Lee, JG ;

Park, B .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (14) :1618-1621

[3] Charge/discharge behavior of Li[Ni0.20U0.20Mn0.60]O2 and Li[Co0.20Li0.27Mn0.53]O2 cathode materials in lithium secondary batteries [J].

Hong, YS ;

Park, YJ ;

Ryu, KS ;

Chang, SH .

SOLID STATE IONICS, 2005, 176 (11-12) :1035-1042

[4] Cyclic deterioration and its improvement for Li-rich layered cathode material Li[Ni0.17Li0.2Co0.07Mn0.56]O2 [J].

Ito, Atsushi ;

Li, Decheng ;

Sato, Yuichi ;

Arao, Masazumi ;

Watanabe, Manabu ;

Hatano, Masaharu ;

Horie, Hideaki ;

Ohsawa, Yasuhiko .

JOURNAL OF POWER SOURCES, 2010, 195 (02) :567-573

[5] Nanomaterials for lithium ion batteries [J].

Jiang, Chunhai ;

Hosono, Eiji ;

Zhou, Haoshen .

NANO TODAY, 2006, 1 (04) :28-33

[6] Interpreting the structural and electrochemical complexity of 0.5Li2MnO3•0.5LiMO2 electrodes for lithium batteries (M = Mn0.5-xNi0.5-xCo2x, 0≤x≤0.5) [J].

Kang, S.-H. ;

Kempgens, P. ;

Greenbaum, S. ;

Kropf, A. J. ;

Amine, K. ;

Thackeray, M. M. .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (20) :2069-2077

[7] 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

[8] Structural modification of Li[Li0.27Co0.20Mn0.53]O2 by lithium extraction and its electrochemical property as the positive electrode for Li-ion batteries [J].

Kumagai, Naoaki ;

Kim, Jung-Min ;

Tsuruta, Syo ;

Kadoma, Yoshihiro ;

Ui, Koichi .

ELECTROCHIMICA ACTA, 2008, 53 (16) :5287-5293

[9] Improvement of electrochemical propertis of Li1.1Al0.05Mn1.85O4 achieved by an AlF3 coating [J].

Lee, Dong-Ju ;

Lee, Ki-Soo ;

Myung, Seung-Taek ;

Yashiro, Hitoshi ;

Sun, Yang-Kook .

JOURNAL OF POWER SOURCES, 2011, 196 (03) :1353-1357

[10] Mussel-inspired surface chemistry for multifunctional coatings [J].

Lee, Haeshin ;

Dellatore, Shara M. ;

Miller, William M. ;

Messersmith, Phillip B. .

SCIENCE, 2007, 318 (5849) :426-430

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