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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F15%3APU114834" target="_blank" >RIV/00216305:26220/15:PU114834 - isvavai.cz</a>

Result on the web

<a href="http://www.electrochemsci.org/papers/vol10/100806288.pdf" target="_blank" >http://www.electrochemsci.org/papers/vol10/100806288.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/LO1210" target="_blank" >LO1210: Energy for Sustainable Development</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

ISSN

1452-3981

e-ISSN

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Volume of the periodical

2015

Issue of the periodical within the volume

8

Country of publishing house

RS - THE REPUBLIC OF SERBIA

Number of pages

14

Pages from-to

6288-6301

UT code for WoS article

000359200400020

EID of the result in the Scopus database

2-s2.0-84941299521