Effects of Tween 80 dispersant on LiFePO4/C cathode material prepared by sonochemical high-temperature ball milling method

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Qing Zhao, Xuetian Li, Zhongbao Shao, Chengjun Liu, Ron Zevenhoven
Förläggare: Springer
Publiceringsår: 2019
Tidskrift: Ionics
Volym: 25
Nummer: 11
Artikelns första sida, sidnummer: 5565
Artikelns sista sida, sidnummer: 5573
eISSN: 1862-0760


Abstrakt

Li-ion batteries have drawn increasing attention because of attractive characteristics such as high operating voltage, high particle density, long cycle life, low self-discharge, and not showing a memory effect. LiFePO4/C cathode material was prepared via a sonochemical high-temperature ball milling method using Tween 80 dispersant. The effects of the Tween 80 on the electrochemical properties of LiFePO4/C were investigated. The experimental results showed that the Tween 80 improved the surface area of LiFePO4/C, and the prepared cathode material showed a better electrochemical performance: it delivered discharge capacities of 159.0 mAh g−1 at 0.1 C and 110.4 mAh g−1 at 10 C, which were higher than for Tween 80-free samples. Moreover, the discharge capacity was 119.6 mAh g−1 at a rate of 5.0 C over 100 cycles while the capacity retention was 94.2%.


Nyckelord

Ball-milling, cathode, dispersant, Lithium-ion battery

Senast uppdaterad 2020-04-06 vid 04:29