Determination of the reversible and irreversible heats of LiNi 0.8Co0.2O2/mesocarbon microbead Li-ion cell reactions using isothermal microcalorimetery

Wenquan Lu; Hui Yang; Jai Prakash

doi:10.1016/j.electacta.2005.06.028

Determination of the reversible and irreversible heats of LiNi _0.8Co_0.2O₂/mesocarbon microbead Li-ion cell reactions using isothermal microcalorimetery

Wenquan Lu, Hui Yang, Jai Prakash

Illinois Institute of Technology

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

61 Scopus citations

Abstract

Cyclic voltammetry (CV) of LiNi_0.8Co_0.2O ₂/Li half-cell and mesocarbon microbead (MCMB)/Li half-cell are studied at very low scan rates. The thermal behaviors of these two half-cells and LiNi_0.8Co_0.2O₂/MCMB full-cell cycled at different current levels are studied with electrochemical-microcalorimeter technique in terms of reversible and irreversible heat generation. The calculated results show excellent agreement with the experimental data at low and moderate current levels (≤C/4). The quantitative heat contributions of the cathode and anode to the overall cell heat generation are also determined.

Original language	English
Pages (from-to)	1322-1329
Number of pages	8
Journal	Electrochimica Acta
Volume	51
Issue number	7
DOIs	https://doi.org/10.1016/j.electacta.2005.06.028
State	Published - 5 Jan 2006
Externally published	Yes

Keywords

Area specific impedance
Entropy change
Heat generation
Isothermal microcalorimeter
Lithium ion batteries

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10.1016/j.electacta.2005.06.028

Cite this

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title = "Determination of the reversible and irreversible heats of LiNi 0.8Co0.2O2/mesocarbon microbead Li-ion cell reactions using isothermal microcalorimetery",

abstract = "Cyclic voltammetry (CV) of LiNi0.8Co0.2O 2/Li half-cell and mesocarbon microbead (MCMB)/Li half-cell are studied at very low scan rates. The thermal behaviors of these two half-cells and LiNi0.8Co0.2O2/MCMB full-cell cycled at different current levels are studied with electrochemical-microcalorimeter technique in terms of reversible and irreversible heat generation. The calculated results show excellent agreement with the experimental data at low and moderate current levels (≤C/4). The quantitative heat contributions of the cathode and anode to the overall cell heat generation are also determined.",

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T1 - Determination of the reversible and irreversible heats of LiNi 0.8Co0.2O2/mesocarbon microbead Li-ion cell reactions using isothermal microcalorimetery

AU - Lu, Wenquan

AU - Yang, Hui

AU - Prakash, Jai

PY - 2006/1/5

Y1 - 2006/1/5

N2 - Cyclic voltammetry (CV) of LiNi0.8Co0.2O 2/Li half-cell and mesocarbon microbead (MCMB)/Li half-cell are studied at very low scan rates. The thermal behaviors of these two half-cells and LiNi0.8Co0.2O2/MCMB full-cell cycled at different current levels are studied with electrochemical-microcalorimeter technique in terms of reversible and irreversible heat generation. The calculated results show excellent agreement with the experimental data at low and moderate current levels (≤C/4). The quantitative heat contributions of the cathode and anode to the overall cell heat generation are also determined.

AB - Cyclic voltammetry (CV) of LiNi0.8Co0.2O 2/Li half-cell and mesocarbon microbead (MCMB)/Li half-cell are studied at very low scan rates. The thermal behaviors of these two half-cells and LiNi0.8Co0.2O2/MCMB full-cell cycled at different current levels are studied with electrochemical-microcalorimeter technique in terms of reversible and irreversible heat generation. The calculated results show excellent agreement with the experimental data at low and moderate current levels (≤C/4). The quantitative heat contributions of the cathode and anode to the overall cell heat generation are also determined.

KW - Area specific impedance

KW - Entropy change

KW - Heat generation

KW - Isothermal microcalorimeter

KW - Lithium ion batteries

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