Reinforcement of binder adhesion for nickel-rich layered oxide in lithium-ion batteries using perfluorinated molecular surface modification

Jeong, Seonghun; Park, So Young; So, Bihong; Lee, Kyu‐Tae; Park, Yeong Don; Mun, Junyoung

doi:10.1016/j.cej.2022.137654

Cited by 8 publications

(11 citation statements)

References 37 publications

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“…The Ni-rich material undergoes a significant volume change while charging, and volume shrinkage occurs after 4.0 V vs. Li/Li + , indicating a significant volume change. [3,27,36,37] During the discharging, the volume is secured as lithium re-enters, and the deterioration of the electrode binding force is mitigated. However, the physcial stress by charge process still remain after the discharging process.…”

Section: Resultsmentioning

confidence: 99%

“…Replacing Co with Ni in LiCoO 2 results in a higher energy density and lower cost. [3][4][5] The use of metal ions other than Co, such as Ni, Mn, and Al, is being actively pursued to further increase the energy density and stability of the batteries. Esepcially, the recent commerialization of Ni-rich materials as cathode active materials for LIBs is a significant step towards improving the energy density and competitiveness of LIBs.…”

Section: Introductionmentioning

confidence: 99%

“…Also, Jeong reported a surface modification of Ni-rich layered oxide by perfluorinated molecular functional coating to enhance adhesive force between PVDF binder and active material surface. [3,29] In this study, the aim is to improve the binding force of the PVDF binder commonly used in conventional battery production. A very small amount, 2 wt.%, of PVDF was used to response the manufacturing process for high energy density of LIBs.…”

Section: Introductionmentioning

confidence: 99%

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Booster Adhesion of Crystalline Poly(vinylidene fluoride) Binder by Heat Treatment for Ni‐rich Layered Oxide Cathode in Lithium‐ion Batteries

et al. 2023

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High energy density of lithium‐ion batteries is crucial for highly efficient battery systems. Ni‐rich layered oxide cathode materials with a high specific capacity have garnered considerable interest. Ni‐rich cathode materials exhibit rather large volume fluctuations during charging and discharging, unlike traditional cathode materials. This study investigated the electrochemical performance of a Ni‐rich cathode with a focus on controlling binder adhesion of poly(vinylidene fluoride) (PVDF), which is the most feasible cathode binder for battery manufacturing, to mitigate the failure mode of volume changes. A simple heat treatment of 200 °C over melting point is effective to enhance binding force by altering nanoscale alignment of PVDF. The study evaluates the electrochemical properties of the Ni‐rich cathode with different levels of binder adhesion to determine the optimal binder conditions for high performance.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Booster Adhesion of Crystalline Poly(vinylidene fluoride) Binder by Heat Treatment for Ni‐rich Layered Oxide Cathode in Lithium‐ion Batteries

et al. 2023

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“…In general, interfacial accessibility is not a serious concern in common electrochemical cells containing liquid electrolytes, as the liquid easily penetrates a porous electrode comprising active materials, a conducting agent, and a binder in the case of LIBs. 22,23 The mechanism of typical liquid LIB interfacial resistance is centered on the passivation film and proceeds by electrochemical decomposition of the electrolyte rather than physical interfacial resistance. Conversely, it is difficult to establish a wide ionictransport interface where the SE and active materials are in contact with ASSBs.…”

Section: Introductionmentioning

confidence: 99%

“…ASSBs have a more complicated interfacial resistance among the components than ordinary LIBs. In general, interfacial accessibility is not a serious concern in common electrochemical cells containing liquid electrolytes, as the liquid easily penetrates a porous electrode comprising active materials, a conducting agent, and a binder in the case of LIBs 22,23 . The mechanism of typical liquid LIB interfacial resistance is centered on the passivation film and proceeds by electrochemical decomposition of the electrolyte rather than physical interfacial resistance.…”

Section: Introductionmentioning

confidence: 99%

Advances of sulfide‐type solid‐state batteries with negative electrodes: Progress and perspectives

Jeong

Sim

et al. 2023

EcoMat

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All-solid-state battery (ASSB) technology is the focus of considerable interest owing to their safety and the fact that their high energy density meets the requirements of emerging battery applications, such as electric vehicles and energy storage systems (ESSs). In light of this, current research on high-energy ASSBs harnesses the benefits of solid-state battery systems by employing anode materials with high energy densities. Owing to the excellent physical safety of solid electrolytes, it is possible to build a battery with high energy density by using high-energy negative electrode materials and decreasing the amount of electrolyte in the battery system. Sulfide-based ASSBs with high ionic conductivity and low physical contact resistance is recently receiving considerable attention. This review provides a summary on various anode materials for ASSBs operating under electrochemically reducing conditions from the perspective of electrochemical and physical safety. The electrochemical and physical properties of sulfide electrolytes used for lithium (Li) metal and particle-type anode materials are presented, as well as strategies for mitigating interfacial failures in solid-state cells through interlayer and electrode design.

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Effective dual‐layer fabrication solution for the lateral axial failure of the electrode in lithium‐ion batteries

Kang

Kim

Park

et al. 2022

Intl J of Energy Research

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Lithium-ion batteries (LIBs) necessitate well-balanced performance characteristics, high energy/power density, and cyclability. In order to optimize them, several types of active materials are mixed in the electrode. In this study, LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM333) with long cycle life and LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) with high energy density are controlled as a dual layer or a mixture to improve the electrochemical performance of the electrode. We discovered that during cycling, the active materials in the surface layer facing the electrolyte have less polarization. The state of charge is greater than the average value of the whole electrode. In this regard, the electrode's dual-layer coating, which consists of a top layer of NCM333 and a bottom layer of NCM811, is the optimal structure among the various NCM811 and NCM333 combinations used in electrodes. As the charging current increases, this lateral failure mode accelerates.

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Reinforcement of binder adhesion for nickel-rich layered oxide in lithium-ion batteries using perfluorinated molecular surface modification

Cited by 8 publications

References 37 publications

Booster Adhesion of Crystalline Poly(vinylidene fluoride) Binder by Heat Treatment for Ni‐rich Layered Oxide Cathode in Lithium‐ion Batteries

Booster Adhesion of Crystalline Poly(vinylidene fluoride) Binder by Heat Treatment for Ni‐rich Layered Oxide Cathode in Lithium‐ion Batteries

Advances of sulfide‐type solid‐state batteries with negative electrodes: Progress and perspectives

Effective dual‐layer fabrication solution for the lateral axial failure of the electrode in lithium‐ion batteries

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