Publication detail

The Influence of Solvents and Salts on the Properties of High-Voltage Cathode Materials

KAZDA, T. VONDRÁK, J. SEDLAŘÍKOVÁ, M. GÓMEZ-ROMERO, P. MUSIL, M. ČUDEK, P. STRAKOVÁ FEDORKOVÁ, A. KAŠPÁREK, V.

Original Title

The Influence of Solvents and Salts on the Properties of High-Voltage Cathode Materials

Type

journal article in Web of Science

Language

English

Original Abstract

Lithium - ion batteries play an increasingly important role in the battery industry and they have become the dominant source of energy in the recent years, especially for portable electronic devices due to their high gravimetric energy density. This article examines the influence of mixtures of solvents with different combinations of lithium salts on the stability of two types of high-voltage cathode materials: LiNi0.5Mn1.5O4 and LiCr0.1Ni0.4Mn1.5O4 produced by a solid phase reaction. These materials were combined with several different electrolytes, cycled at various loads and higher temperature. Various combinations of solvents ethylene carbonate (EC), dimethyl carbonate (DMC) and Tetrahydrothiophene 1.1-dioxide (Sulfolane) were used for these measurements. Salts LiPF6 , LiNO3 and LiTFSI were used. The influence of solvents and salts on the properties of high-voltage cathode materials was tested by cycling at different current loads and by cycling at high temperature. It was found out, by LSV analysis, that the addition of Sulfolane increases the stability of electrolyte. The addition of chromium to the cathode material LiNi0.5Mn1.5O4 causes increasing of capacity and stability at high temperature. The combination of the cathode material LiCr0.1Ni0.4Mn1.5O4 with the electrolyte 1.5 M LiPF6 EC:DMC:Sulfolane 1:2:1 w/w/w leads to increased stability in comparison with other electrolytes.

Keywords

Lithium ion battery, LiNi0.5Mn1.5O4, electrolyte, sulfolane

Authors

KAZDA, T.; VONDRÁK, J.; SEDLAŘÍKOVÁ, M.; GÓMEZ-ROMERO, P.; MUSIL, M.; ČUDEK, P.; STRAKOVÁ FEDORKOVÁ, A.; KAŠPÁREK, V.

RIV year

2015

Released

24. 7. 2015

Publisher

ESG

ISBN

1452-3981

Periodical

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

Year of study

10

Number

8

State

Republic of Serbia

Pages from

6288

Pages to

6301

Pages count

14

URL

http://www.electrochemsci.org/papers/vol10/100806288.pdf

Full text in the Digital Library

http://hdl.handle.net/11012/201440

BibTex

@article{BUT115470,
  author="Tomáš {Kazda} and Jiří {Vondrák} and Marie {Sedlaříková} and Pedro {Gómez-Romero} and Michal {Musil} and Pavel {Čudek} and Andrea {Straková Fedorková} and Vít {Kašpárek}",
  title="The Influence of Solvents and Salts on the Properties of High-Voltage Cathode Materials",
  journal="INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE",
  year="2015",
  volume="10",
  number="8",
  pages="6288--6301",
  issn="1452-3981",
  url="http://www.electrochemsci.org/papers/vol10/100806288.pdf"
}