Electrochemical effects and magnetic properties of B substituted LiCoO2: Improving Li-battery performance

E. Oz; S. Altin; S. Demirel; A. Bayri; E. Altin; O. Baglayan; S. Avci

doi:10.1016/j.jallcom.2015.10.080

Electrochemical effects and magnetic properties of B substituted LiCoO₂: Improving Li-battery performance

E. Oz
, S. Altin
, S. Demirel
, A. Bayri
, E. Altin
, O. Baglayan
, S. Avci^*

^*Corresponding author for this work

Inonu University
Anadolu University
Istabul Medeniyet University

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

LiCo_1-xB_xO₂ (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.

Original language	English
Pages (from-to)	835-847
Number of pages	13
Journal	Journal of Alloys and Compounds
Volume	657
DOIs	https://doi.org/10.1016/j.jallcom.2015.10.080
Publication status	Published - 5 Feb 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

B substitution
Li-ion batteries
LiCoO
Magnetic properties
Structural properties

Access to Document

10.1016/j.jallcom.2015.10.080

Cite this

@article{fc36940180eb44f7b74b7869577cb963,

title = "Electrochemical effects and magnetic properties of B substituted LiCoO2: Improving Li-battery performance",

abstract = "LiCo1-xBxO2 (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.",

keywords = "B substitution, Li-ion batteries, LiCoO, Magnetic properties, Structural properties",

author = "E. Oz and S. Altin and S. Demirel and A. Bayri and E. Altin and O. Baglayan and S. Avci",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2016",

month = feb,

day = "5",

doi = "10.1016/j.jallcom.2015.10.080",

language = "English",

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T1 - Electrochemical effects and magnetic properties of B substituted LiCoO2

T2 - Improving Li-battery performance

AU - Oz, E.

AU - Altin, S.

AU - Demirel, S.

AU - Bayri, A.

AU - Altin, E.

AU - Baglayan, O.

AU - Avci, S.

PY - 2016/2/5

Y1 - 2016/2/5

N2 - LiCo1-xBxO2 (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.

AB - LiCo1-xBxO2 (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.

KW - B substitution

KW - Li-ion batteries

KW - LiCoO

KW - Magnetic properties

KW - Structural properties

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