Electrochemical impedance study of LiCoO2 cathode reactions in a lithium ion cell incorporating a reference electrode

The thermal behavior of a commercial lithium-ion cell with the cathode material LiNi0.6Mn0.2Co0.2O2 (NMC622) was investigated during the cycling process using a Tian-Calvet calorimeter (C80, SETARAM Instrumentation, France). Various current flows of 42.5, 85, and 170 mA corresponding to charging rates of 0.5, 1, and 2 C, respectively, were applied in the measurements. The corresponding heat flow rates were measured by the C80 calorimeter at 30 °C. The reversible heat effect due to the reversible electrochemical reaction was quantified by the entropy change measurement. The irreversible heat effect due to internal resistances was determined by the electrochemical impedance spectroscopy (EIS) and the galvanostatic intermittent titration technique (GITT). The results were compared with the direct measurement of the heat effect by calorimetry during electrochemical cycling.

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A study on the impact of lithium-ion cell relaxation on electrochemical impedance spectroscopy

Journal of Power Sources ◽

10.1016/j.jpowsour.2015.01.097 ◽

2015 ◽

Vol 280 ◽

pp. 74-80 ◽

Cited By ~ 82

Author(s):

Anup Barai ◽

Gael H. Chouchelamane ◽

Yue Guo ◽

Andrew McGordon ◽

Paul Jennings

Keyword(s):

Electrochemical Impedance Spectroscopy ◽

Impedance Spectroscopy ◽

Electrochemical Impedance ◽

Lithium Ion ◽

Lithium Ion Cell ◽

The Impact

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The Electrochemical Stability of Starch Carbon as an Important Property in the Construction of a Lithium-Ion Cell

Entropy ◽

10.3390/e23070861 ◽

2021 ◽

Vol 23 (7) ◽

pp. 861

Author(s):

Beata Kurc ◽

Marita Pigłowska ◽

Łukasz Rymaniak

Keyword(s):

Activation Energy ◽

Electrochemical Impedance ◽

Lithium Ion ◽

Interface Layer ◽

Cell System ◽

Electrochemical Stability ◽

Lithium Ion Cell ◽

Cell Element ◽

Different Temperatures ◽

Anode Electrode

This paper shows use of starch-based carbon (CSC) and graphene as the anode electrode for lithium-ion cell. To describe electrochemical stability of the half-cell system and kinetic parameters of charging process in different temperatures, electrochemical impedance spectroscopy (EIS) measurement was adopted. It has been shown that smaller resistances are observed for CSC. Additionally, Bode plots show high electrochemical stability at higher temperatures. The activation energy for the SEI (solid–electrolyte interface) layer, charge transfer, and electrolyte were in the ranges of 24.06–25.33, 68.18–118.55, and 13.84–15.22 kJ mol−1, respectively. Moreover, the activation energy of most processes is smaller for CSC, which means that this electrode could serve as an eco-friendly biodegradable lithium-ion cell element.

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A novel parameters acquisition method based on electrochemical impedance spectroscopy mathematical model in lithium ion cell

2017 Prognostics and System Health Management Conference (PHM-Harbin) ◽

10.1109/phm.2017.8079135 ◽

2017 ◽

Author(s):

Chao Lyu ◽

Wei Cong ◽

Haiyang Liu ◽

Lulu Zhang

Keyword(s):

Mathematical Model ◽

Electrochemical Impedance Spectroscopy ◽

Impedance Spectroscopy ◽

Electrochemical Impedance ◽

Lithium Ion ◽

Lithium Ion Cell ◽

Acquisition Method

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Electrochemical Performance of AA Size MCMB/LiCoO2 Lithium-Ion Battery Using Three-Electrode Cell

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.502 ◽

2007 ◽

Vol 336-338 ◽

pp. 502-504 ◽

Cited By ~ 1

Author(s):

Fang Lian ◽

Zhong Bao Yu ◽

Sheng Wen Zhong ◽

Li Hua Xu ◽

Qing Guo Liu

Keyword(s):

Voltage Drop ◽

Reference Electrode ◽

Lithium Ion ◽

Discharge Voltage ◽

Electrode Cell ◽

Cathode Structure ◽

Voltage Plateau ◽

Li Ion ◽

The Individual ◽

Licoo2 Cathode

AA size Li-ion batteries using LiCoO2, MCMB and lithium metal as cathode, anode and reference electrode respectively were assembled, in order to study the individual effect of anode and cathode on the cyclic and overcharge performances. The experimental results showed that the LiCoO2 cathode was the main electrode related to the capacity decay and discharge voltage drop. Increasing polarization of the LiCoO2 cathode, especially at overcharge situation, and the irreversible change of cathode structure led to reduction of discharge capacity and voltage plateau of batteries.

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(Invited) Effect of Position of Reference Electrode on Electrochemical Impedance in Laminated Lithium-Ion Rechargeable Batteries

ECS Meeting Abstracts ◽

10.1149/ma2016-02/23/1714 ◽

2016 ◽

Keyword(s):

Electrochemical Impedance ◽

Reference Electrode ◽

Lithium Ion ◽

Rechargeable Batteries

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Electrospun Separation Material for Lithium-Ion Batteries: Synthesis and Study of Physical and Electrochemical Properties

Energies ◽

10.3390/en13010018 ◽

2019 ◽

Vol 13 (1) ◽

pp. 18

Author(s):

Semen V. Makhov ◽

Aleksandr V. Ivanishchev ◽

Arseni V. Ushakov ◽

Dmitry V. Makhov

Keyword(s):

Electrochemical Properties ◽

Polyvinylidene Fluoride ◽

Electrochemical Impedance ◽

Reference Electrode ◽

Lithium Ion ◽

Physicochemical Characteristics ◽

Synthesis Conditions ◽

Electrochemical Tests ◽

Working Electrode ◽

Wide Range

The paper presents a comprehensive study of the physicochemical and electrochemical properties of a new nano-microporous non-woven composite separation material for a lithium-ion battery based on nano- and microfibers of polyvinylidene fluoride (PVDF) and its copolymer with polytetrafluoroethylene (PTFE), obtained by capillary-less electrospinning. A technique for the synthesis of separation material was developed, and the composition of the polymeric solution and the electrospinning conditions were optimized to produce polymer nano-microfibers with the required physicochemical characteristics. The optimal synthesis conditions for the separation material were determined. Higher porosity of the separation material and increased wettability in the most common electrolyte compositions contribute to the higher conductivity of the obtained separation material in comparison with the widely used commercial separation materials based on polypropylene (PP). The working characteristics of the separation material were studied in laboratory half-cells with a working electrode based on Li4Ti5O12, as well as a lithium metal counter electrode and a reference electrode. Charge-discharge tests of cells were performed in a wide range of variation of currents: From 0.1 to 25 C. A decrease in the total polarization of the working electrode and an increase in the cycled capacity at comparable currents in comparison with a cell with a PP-based separator were noted. The state of the electrodes and the separator in the cell was monitored using electrochemical impedance spectroscopy: The polarization resistances of the electrodes in different frequency ranges were determined, and the diffusion coefficient of lithium ions in the Li4Ti5O12 electrode was estimated in various lithiation states and at different stages of electrochemical tests, which were in the interval of 10−10 to 10−9 cm2·s−1.

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