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

Mendoza-Hernandez, Omar Samuel; Ishikawa, Hiroaki; Nishikawa, Yuuki; Maruyama, Yuki; Sone, Yoshitsugu; Umeda, Minoru

doi:10.1007/s10008-015-2741-y

Cited by 16 publications

(8 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These peaks can be attributed to structural changes in LiCoO2 during Li ion intercalation/deintercalation. 16,18 By comparing this result with the Raman spectroscopy study of lithium intercalation in LiCoO2, peaks A, B, and C can be explained by the structural phase transitions between hexagonal-I, hexagonal-II, and monoclinic. 19 The structural changes at the characteristic peaks of LiCoO2 are summarized in Table 1.…”

Section: Methodsmentioning

confidence: 72%

“…The capacity ratio of LiCoO2 cathode and graphite anode is 1:1. A polypropylene film (Celgard 2400) was used as the separator (the separators were installed on both sides of lithium reference electrode to ensure that the electrode reactions cannot be affected by lithium reference electrode 16,17 ), and a solution of 1 mol dm -3 LiPF6 dissolved in a mixture of ethylene carbonate and dimethyl carbonate (peaks A', B', and C') during discharge (Fig. 3a).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Peak Attribution of the Differential Capacity Profile of a LiCoO<sub>2</sub>-based Three-electrode Li-ion Laminate Cell

TSUTSUMI

Shironita

et al. 2022

Electrochemistry

Self Cite

View full text Add to dashboard Cite

Analysis of the differential capacity profile (dQ/dV vs. V), which can capture the changes in the electrode structure inside a battery, is an effective electrochemical method for investigating the degradation behavior and mechanism of Li-ion cells. However, the electrode reactions corresponding to the peaks in a dQ/dV vs. V curve are undefined. Hence, it is difficult to qualitatively analyze the mechanism of cell degradation using this curve. In this work, we propose an original method for attributing the peaks in a dQ/dV vs. V curve. Peak attribution is implemented using a three-electrode Li-ion laminate cell with a LiCoO2 cathode, graphite anode, and lithium reference electrode. During charge and discharge, the potential differences (dE) of the LiCoO2-Li and graphite-Li sides and voltage difference (dV) of the LiCoO2-graphite full cell are measured simultaneously. Meanwhile, the Coulomb amounts (dQ) of the LiCoO2-Li and graphite-Li sides are equivalent to that of the LiCoO2graphite full cell at a certain time. By comparing the dQ/dV vs. V curve of the full cell to the dQ/dE vs. E curves of the LiCoO2-Li and graphite-Li sides, the peaks in the differential capacity curve can be attributed to specific structural changes in the electrodes. Importantly, this information is acquired without disassembling the cell, making our proposed analytical method a convenient means of studying cell degradation under various conditions, such as low temperature, high temperature, or high-rate charging.

show abstract

Section: Methodsmentioning

confidence: 72%

Section: Methodsmentioning

confidence: 99%

Peak Attribution of the Differential Capacity Profile of a LiCoO<sub>2</sub>-based Three-electrode Li-ion Laminate Cell

TSUTSUMI

Shironita

et al. 2022

Electrochemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…The other less resolved phenomena at higher potential may be ascribed to the order/disorder transitions usually observed in LCO cathodes. 33,34 The voltage profiles of the cells, reported in Fig. 9c and Fig.…”

Section: Electrochemical Characterization Of Recycled and Reused Lico...mentioning

confidence: 99%

Sorting, characterisation, environmentally friendly recycling and re-use of components from End-of-Life 18650 Li ion batteries

Cattaneo

Callegari

Merli

et al. 2023

Preprint

View full text Add to dashboard Cite

The rapid growth in demand for lithium-ion batteries (LIBs) is leading to increasing challenges in: (i) the management of end-of-life (EoL) systems of electric vehicles (EVs) and industrial applications with huge variety in chemistry and design; (ii) the supply of critical raw materials (CRMs), especially Lithium, Cobalt and Nickel, whose ores are known to be conflict resources, and currently under the spotlight in the recycling field. The above-mentioned challenges can be addressed by collecting and recycling spent LIBs through economically and environmentally sustainable processes and enabling the transition to a circular economy vision based on the use of secondary raw materials. These processes involve not only the metallurgic approaches to recover the critical metals, but also the pre-treatment approaches in LIBs recycling that are crucial to enhance the recovery efficiency of other valuable materials (e.g., graphite, fluorinated compounds, binders, electrolyte), and to reduce the energy consumption in the subsequent metallurgic processes. Here, some pre-treatment processes, from the disassembling, opening, and sorting to the component separation, collection, and recovery, are described for the EoL 18650-type commercial Li-ion batteries (4400 mAh) harvested from a laptop module. Additionally, a closed loop of eco-friendly recycling to fully recover the composite cathode (both cathode active material, CAM, and binder) is presented. In the case of CAM, two different processes were explored: (i) soft-solvometallurgy via green solvents based on deep eutectic solvents (DESs); (ii) direct recycling. The recovered materials were used to prepare a new composite cathode that was assembled in a new cell using the recovered separator and characterized to evaluate the effective feasibility of the whole recycling process.

show abstract

“…As mentioned above, EIS is the method of choice to study the electrochemical properties of various battery electrodes as a function of cycling or state of charge [54]. Positive electrode active materials including V6O13 [14,55], LiMn2O4 [56,57] [72,73], LiNi0.5Mn1.5O4 [74], LiNi0.5Mn0.3Co0.2O2 [36,75], and LiNi0.6Mn0.6Co0.2O2 [76], as well as negative electrode active materials, such as carbons [35,60,68,[77][78][79][80], graphite [16,31,[36][37][38]57,[62][63][64][65][66][67][68][69][70][71][72][73][74][75]81,82], Sn-containing composites [82,83], LiTi2(PO4)3 [15], Li4Ti5O12 [61], and Si-containing composites [34,84,85] have...…”

Section: Electrochemical Impedance-based Techniquesmentioning

confidence: 99%

“…In LIBs, the impedance contributions of the positive and negative electrodes can be summed and matched with the full cell impedance ( Figure 10) [16,31,35,60,66,71,72,[76][77][78]81,103,104]. This criterion is widely applied with the intention of validating the cell set-up used for the EIS measurements.…”

Section: Electrochemical Impedance-based Techniquesmentioning

confidence: 99%

Critical Review of the Use of Reference Electrodes in Li-Ion Batteries: A Diagnostic Perspective

2019

View full text Add to dashboard Cite

Use of a reference electrode (RE) in Li-ion batteries (LIBs) aims to enable quantitative evaluation of various electrochemical aspects of operation such as: (i) the distinct contribution of each cell component to the overall battery performance, (ii) correct interpretation of current and voltage data with respect to the components, and (iii) the study of reaction mechanisms of individual electrodes. However, care needs to be taken to ensure the presence of the RE does not perturb the normal operation of the cell. Furthermore, if not properly controlled, geometrical and chemical features of the RE can have a significant influence on the measured response. Here, we present a comprehensive review of the range of RE types and configurations reported in the literature, with a focus on critical aspects such as electrochemical methods of analysis, cell geometry, and chemical composition of the RE and influence of the electrolyte. Some of the more controversial issues reported in the literature are highlighted and the benefits and drawbacks of the use of REs as an in situ diagnostic tool in LIBs are discussed.

show abstract

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

Cited by 16 publications

References 26 publications

Peak Attribution of the Differential Capacity Profile of a LiCoO<sub>2</sub>-based Three-electrode Li-ion Laminate Cell

Peak Attribution of the Differential Capacity Profile of a LiCoO<sub>2</sub>-based Three-electrode Li-ion Laminate Cell

Sorting, characterisation, environmentally friendly recycling and re-use of components from End-of-Life 18650 Li ion batteries

Critical Review of the Use of Reference Electrodes in Li-Ion Batteries: A Diagnostic Perspective

Contact Info

Product

Resources

About