High resolution morphology and electrical characterization of aged Li-ion battery cathode

被引：17

作者：

Ramdon, Sanjay ^{[1
]}

Bhushan, Bharat ^{[1
]}

机构：

[1] Ohio State Univ, Nanoprobe Lab Bio & Nanotechnol & Biomimet, Columbus, OH 43210 USA

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 380卷

关键词：

Li-ion; Battery; LiFePO4 cathode degradation; DEGRADATION;

D O I：

10.1016/j.jcis.2012.05.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Understanding the changes that take place in an aged Lithium-ion (Li-ion) battery cathode is vital to improving battery storage capabilities. High resolution imaging using an atomic force microscope (AFM) and current measurement capabilities are used to determine the difference in surface morphology as well as conductance between unaged and aged cathode. Upon aging, agglomeration of LiFePO4 particles with nanocrystalline deposits is observed and the samples show lower conductance and hence increased resistance. The data identifies potential degradation mechanisms which reduce the conductivity of the cathode leading to poor cycling performance of the battery. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：187 / 191

页数：5

共 20 条

[1] Building better batteries [J].

Armand, M. ;

Tarascon, J. -M. .

NATURE, 2008, 451 (7179) :652-657

[2] Nanoscale mapping of ion diffusion in a lithium-ion battery cathode [J].

Balke, N. ;

Jesse, S. ;

Morozovska, A. N. ;

Eliseev, E. ;

Chung, D. W. ;

Kim, Y. ;

Adamczyk, L. ;

Garcia, R. E. ;

Dudney, N. ;

Kalinin, S. V. .

NATURE NANOTECHNOLOGY, 2010, 5 (10) :749-754

[3]

Bhushan B., 2002, Introduction to Tribology

[4] Electron microscopy study of the LiFePO4 to FePO4 phase transition [J].

Chen, GY ;

Song, XY ;

Richardson, TJ .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (06) :A295-A298

[5] Electronically conductive phospho-olivines as lithium storage electrodes [J].

Chung, SY ;

Bloking, JT ;

Chiang, YM .

NATURE MATERIALS, 2002, 1 (02) :123-128

[6] Morphological and Structural Studies of Composite Sulfur Electrodes upon Cycling by HRTEM, AFM and Raman Spectroscopy [J].

Elazari, Ran ;

Salitra, Gregory ;

Talyosef, Yossi ;

Grinblat, Judith ;

Scordilis-Kelley, Charislea ;

Xiao, Ang ;

Affinito, John ;

Aurbach, Doron .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2010, 157 (10) :A1131-A1138

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

Goodenough, John B. .

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

[8] Studies of local degradation phenomena in composite cathodes for lithium-ion batteries [J].

Kerlau, Marie ;

Marcinek, Marek ;

Srinivasan, Venkat ;

Kostecki, Robert M. .

ELECTROCHIMICA ACTA, 2007, 52 (17) :5422-5429

[9] Degradation of LiNi0.8Co0.2O2 cathode surfaces in high-power lithium-ion batteries [J].

Kostecki, R ;

McLarnon, F .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (07) :A164-A166

[10]

Nagpure S. C., 2011, MULTISCALED CHARACTE

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