Electrochemical effects and magnetic properties of B substituted LiCoO2: Improving Li-battery performance
Özet
LiCo(1-x)BxO(2) (x = 0, 0.125, 0.25, 0.375, 0.5, 0.75 and 1) samples were synthesized via solid state reactions. They were characterized by SEM, X-ray powder diffraction, FTIR, Raman, electrical and magnetic measurements. XRD data show impurity phases for x >= 0.25 samples due to boron content. Based on FTIR studies, the peak position of CoO6 shifts with increasing B content. The Raman spectra of LiCoO2 shows the presence of three broad bands, indicating the possible formation of spinel structure. The effective magnetic moments of the samples were calculated using Curie-Weiss law with temperature independent term. The M-H curves of x = 0.375 and 0.5 samples show very weak hysteresis loops. Effects of boron substitution on battery performance are also investigated. x = 0.125 and x >= 0.25 samples give promising results due to their enhanced reversibility of cycling compared to pristine LiCoO2. Capacity retentions for 100 cycles for x = 0, 0.125 and 0.25 samples are 22%, 81% and 83%, respectively. (C) 2015 Elsevier B.V. All rights reserved.
Anahtar kelimeler
Atıf için künye
Öz, E., ALTIN, S., DEMİREL, S., BAYRİ, A., ALTIN, E., Baglayan, O., & AVCI, S. (2016). Electrochemical effects and magnetic properties of B substituted LiCoO2: Improving Li-battery performance. JOURNAL OF ALLOYS AND COMPOUNDS, 657, 835–847. https://doi.org/10.1016/j.jallcom.2015.10.080
BibTeX
@article{oz2016-80069,
author = {Öz, Erdinç and ALTIN, SERDAR and DEMİREL, SONER and BAYRİ, ALİ and ALTIN, EMİNE and Baglayan, O. and AVCI, SEVDA},
title = {Electrochemical effects and magnetic properties of B substituted LiCoO2: Improving Li-battery performance},
journal = {JOURNAL OF ALLOYS AND COMPOUNDS},
year = {2016},
volume = {657},
pages = {835--847},
issn = {0925-8388},
doi = {10.1016/j.jallcom.2015.10.080},
url = {https://akademik.atauni.edu.tr/yayinlar/80069-electrochemical-effects-and-magnetic-properties-of-b-substituted-licoo2}
}