Electrochemical impedance spectroscopy study of C/Li2MnSiO4 composite cathode material at different states of charge

被引：8

作者：

Swietoslawski, M. ^{[1
]}

Molenda, M. ^{[1
]}

Grabowska, M. ^{[1
]}

Wach, A. ^{[1
]}

Kustrowski, P. ^{[1
]}

Dziembaj, R. ^{[1
]}

机构：

[1] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland

来源：

SOLID STATE IONICS | 2014年 / 263卷

关键词：

Li-ion batteries; Carbon coating; Electrochemical impedance spectroscopy; Dilithium manganese orthosilicate; State of charge; LI2MNSIO4/C CATHODE; PERFORMANCE; LI2FESIO4; CARBON; POLYMORPH; FE;

D O I：

10.1016/j.ssi.2014.05.005

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：

C/Li2MnSiO4 nanocomposite material obtained by sol-gel synthesis was studied in initial charge/discharge cycle. Electrochemical impedance spectroscopy (EIS) analysis in different states of charge (SOC) allowed to describe changes in electrochemical properties of C/Li2MnSiO4. The activation process of carbon coating was analyzed. and the stability of carbon coating confirmed. XPS measurement was used to prove range and reversibility of electrochemical charging/discharging process. Strong influence of Li2MnSiO4 amorphization on its electronic and ionic conductivity was observed. (C) 2014 Elsevier B.V. All tights reserved.

引用

页码：99 / 102

页数：4