Striking a Balance: Exploring Optimal Functionalities and Composition of Highly Adhesive and Dispersing Binders for High‐Nickel Cathodes in Lithium‐Ion Batteries

Jeong, Daun; Kwon, Da‐Sol; Kim, Hee Joong; Shim, Jimin

doi:10.1002/aenm.202302845

Cited by 7 publications

(1 citation statement)

References 81 publications

(103 reference statements)

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“…In Table , we compared the long-term cycling performance of cells with NCM811-based active materials after being surface-modified with various metal oxides, polymers, and oligomers. ,,,,− Nevertheless, most coating materials intrinsically have low ionic or/and electronic conductivities, which reduce the ion or/and electron transport of LIBs and cause the irreversible capacity loss of NCM811 host materials to a certain extent. Remarkably, our developed Li-BTJ ion-conductive oligomer exhibits easy preparation, controllable ionic conductivity, suppression of side reactions, and inexpensive raw materials. , Additionally, the excellent electronic conductivity of the PDA-VGCF filler improves the charge transfer kinetics at the interface between the cathode active material and the electrolyte, compensating for the inherent electron-conductive loss of the Li-BTJ oligomer, as demonstrated in Figure S2 (c).…”

Section: Resultsmentioning

confidence: 99%

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Mengesha,

Jeyakumar,

Hendri

et al. 2024

ACS Appl. Mater. Interfaces

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To address the issue that a single coating agent cannot simultaneously enhance Li +ion transport and electronic conductivity of Ni-rich cathode materials with surface modification, in the present study, we first successfully synthesized a LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathode material by a Taylor-flow reactor followed by surface coating with Li-BTJ and dispersion of vaporgrown carbon fibers treated with polydopamine (PDA-VGCF) filler in the composite slurry. The Li-BTJ hybrid oligomer coating can suppress side reactions and enhance ionic conductivity, and the PDA-VGCFs filler can increase electronic conductivity. As a result of the synergistic effect of the dual conducting agents, the cells based on the modified NCM811 electrodes deliver superior cycling stability and rate capability, as compared to the bare NCM811 electrode. The CR2032 coin-type cells with the NCM811@Li-BTJ + PDA-VGCF electrode retain a discharge specific capacity of ∼92.2% at 1C after 200 cycles between 2.8 and 4.3 V (vs Li/Li + ), while bare NCM811 retains only 84.0%. Moreover, the NCM811@Li-BTJ + PDA-VGCF electrode-based cells reduced the total heat (Q t ) by ca. 7.0% at 35 °C over the bare electrode. Remarkably, the Li-BTJ hybrid oligomer coating on the surface of the NCM811 active particles acts as an artificial cathode electrolyte interphase (ACEI) layer, mitigating irreversible surface phase transformation of the layered NCM811 cathode and facilitating Li + ion transport. Meanwhile, the fiber-shaped PDA-VGCF filler significantly reduced microcrack propagation during cycling and promoted the electronic conductance of the NCM811-based electrode. Generally, enlightened with the current experimental findings, the concerted ion and electron conductive agents significantly enhanced the Ni-rich cathode-based cell performance, which is a promising strategy to apply to other Ni-rich cathode materials for lithium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Mengesha,

Jeyakumar,

Hendri

et al. 2024

ACS Appl. Mater. Interfaces

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Functionalized Binders Boost High‐Capacity Anode Materials

Dong,

Wang,

Huang

et al. 2024

Adv Funct Materials

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The burgeoning field of energy storage battery innovation has sparked a relentless pursuit of high‐capacity anode materials to meet the escalating demand for improved energy density. Typically, these materials for batteries experience significant volume changes during cycles, which severely test the structural integrity and lifespan of electrode configurations. High‐performance binders have emerged as a critical component in addressing this challenge. Although they represent a small proportion of the battery's composition, binders play a pivotal role in enhancing electrochemical efficiency, safety, and cost‐effectiveness of batteries. The advancement of high‐capacity anode materials has rendered traditional binders inadequate, prompting the development of functional binders that are increasingly being refined to meet these requirements. This article began by outlining the role and requirements of binders within electrodes, examining cutting‐edge characterization methodologies, and discussing the “structure‐function” paradigm that underpins binder selection. It then showcased the research advancements in identifying suitable binders for high‐capacity anode materials, including silicon (Si), phosphorus (P), tin (Sn), antimony (Sb), and germanium (Ge). In summary, the article contemplated the future direction of binder development and application in high‐capacity electrode materials. The aim is to facilitate the progression of high‐performance, high‐capacity anodes, thereby accelerating the development of high‐energy‐density lithium‐ion and sodium‐ion batteries.

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Recyclable Fluorine‐Free Water‐Borne Binders for High‐Energy Lithium‐Ion Battery Cathodes

Leibetseder,

Xie,

Leeb

et al. 2024

Advanced Energy Materials

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The rapidly increasing demand for lithium‐ion batteries and the fight against climate change call for novel materials that enhance performance, enable eco‐friendly processing, and are designed for efficient recycling. In lithium‐ion batteries, the binder polymer, used for cathode production, constitutes an integral but often overlooked component. The currently used polyvinylidene fluoride is processed with toxic organic solvents and has numerous other disadvantages concerning adhesion, conductivity, and recyclability. A change to aqueous processing using new, multi‐functional, purpose‐built materials that are soluble in water and fluorine‐free would thus constitute an important advance in the battery sector. Herein, four water‐soluble surfactant‐like polymers based on 11‐aminoundecanoic acid, that can be obtained in high purity and at a multigram scale are described. Free radical polymerization allows modification of the polymer with a wide variety of comonomers. The materials presented significantly enhance adhesion, are thermally stable at temperatures up to 350 °C, and are compatible with state‐of‐the‐art high‐energy LiNi0.6Mn0.2Co0.2O2 (NMC 622) cathode materials. It is also shown new recycling pathways made possible by the reversible pH‐dependent water‐solubility of the materials.

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Striking a Balance: Exploring Optimal Functionalities and Composition of Highly Adhesive and Dispersing Binders for High‐Nickel Cathodes in Lithium‐Ion Batteries

Cited by 7 publications

References 81 publications

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Functionalized Binders Boost High‐Capacity Anode Materials

Recyclable Fluorine‐Free Water‐Borne Binders for High‐Energy Lithium‐Ion Battery Cathodes

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Striking a Balance: Exploring Optimal Functionalities and Composition of Highly Adhesive and Dispersing Binders for High‐Nickel Cathodes in Lithium‐Ion Batteries

Cited by 7 publications

References 81 publications

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi0.8Co0.1Mn0.1O2 Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi0.8Co0.1Mn0.1O2 Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Functionalized Binders Boost High‐Capacity Anode Materials

Recyclable Fluorine‐Free Water‐Borne Binders for High‐Energy Lithium‐Ion Battery Cathodes

Contact Info

Product

Resources

About

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries

Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries