No Cover Image

Journal article 293 views

A novel conversion anode composite for lithium ion batteries based on MnF2/carbon nanotubes with hierarchical structure

Le Zhang, Anji Munnangi Orcid Logo, Xiu-Mei Lin, Zhirong Zhao-Karger, Maximilian Fichtner

Journal of Alloys and Compounds, Volume: 724, Pages: 1101 - 1108

Swansea University Author: Anji Munnangi Orcid Logo

Full text not available from this repository: check for access using links below.

Abstract

A hierarchically structured MnF2/carbon nanotubes composite (CNTs) was successfully prepared using a novel sol-gel method. The reaction mechanism of this process was investigated by simultaneous thermogravimetric analysis, differential scanning calorimetry and mass spectrometry (TGA-DSC-MS). The com...

Full description

Published in: Journal of Alloys and Compounds
ISSN: 0925-8388
Published: Elsevier BV 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa51573
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: A hierarchically structured MnF2/carbon nanotubes composite (CNTs) was successfully prepared using a novel sol-gel method. The reaction mechanism of this process was investigated by simultaneous thermogravimetric analysis, differential scanning calorimetry and mass spectrometry (TGA-DSC-MS). The composition and morphology were characterized by X-ray diffraction (XRD), Raman spectrometry, and scanning electron microscopy (SEM). The material was built from a bunch of radially arranged nano-rods crystallites with a side length of 40 nm. CNTs were dispersed on the surfaces of MnF2 particles and improved the electrochemical performance. A low discharge plateau around 0.6 V vs. Li/Li+ at 0.2 C was obtained in the first cycle with a reversible discharge capacity of 384 mAh g−1 after 100 cycles. In long-term measurements, a discharge capacity of 203 mAh g−1 at 10 C was delivered after 1000 cycles. Moreover, a first full cell (LiNi1/3Mn1/3Co1/3O2 vs. MnF2) test demonstrates the actual applicability of the MnF2/CNTs composite, as well.
Keywords: manganese fluoride, carbon nanotubes, anode, lithium ion batteries, hierarchical porous structure
College: College of Engineering
Start Page: 1101
End Page: 1108