Detail publikace

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.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Rok RIV

2015

Vydáno

24. 7. 2015

Nakladatel

ESG

ISSN

1452-3981

Periodikum

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

Ročník

10

Číslo

8

Stát

Srbská republika

Strany od

6288

Strany do

6301

Strany počet

14

URL

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

Plný text v Digitální knihovně

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"
}