Facile formulation and fabrication of the cathode using a self-lithiated carbon for all-solid-state batteries

Delaporte, Nicolas; Darwiche, Ali; Léonard, Mireille; Lajoie, Gilles; Demers, Hendrix; Clément, Daniel; Veillette, R.; Rodrigue, Lisa; Kim, C.; Zaghib, Karim

doi:10.1038/s41598-020-68865-8

Cited by 6 publications

(4 citation statements)

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“…The components contained in the sample are also confirmed using Energy Dispersive X-ray (EDX), which is presented in table 1. Based on the EDX results, there are impurities in the samples, so it is necessary to do a post-treatment such as re-washing and re-heated to remove the Na content in the sample [16], [17].…”

Section: Resultsmentioning

confidence: 99%

Preparation of Mg-Mn doped LiNiO2 via direct Indonesian Mixed Hydroxide Precipitate Lithiation

Rahmawati

Apriliyani

Paramitha

et al. 2022

ESTA

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<span lang="EN-US">Using local raw materials affects the development of the Li-ion batteries industry in Indonesia, which is highly important for the sustainability of electric vehicles. Cathode material affects around 40-50% of Li-ion batteries production costs. The utilization of cheap and local nickel sources for nickel rich-cathode material is a promising approach for reducing LIBs cell cost. Mixed Hydroxide Precipitate (MHP) which contain significantly high amount of nickel can serve as the nickel source for LiNiO<sub>2</sub> cathode material This article proposes an effective and economical method to obtain nickel rich cathode material via direct high thermal lithiation of MHP. Non negligible amount of Mn and Mg in MHP can be directly used as a dopant. Based on XRD analysis, a mixture of NiO and LNO phase can be detected. The presence of Mg and Mn impurities is not observable. The SEM images confirms the irregular shape of the as-prepared LNO. The FTIR confirm the absence of residual Li. Based on the findings, a pretreatment technique is required to be explored in the future.</span>

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Section: Resultsmentioning

confidence: 99%

Preparation of Mg-Mn doped LiNiO2 via direct Indonesian Mixed Hydroxide Precipitate Lithiation

Rahmawati

Apriliyani

Paramitha

et al. 2022

ESTA

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“…Among these, the last three evidences are more likely to support the mechanism of the proton-cation exchange theory. [34,35] Recently, Hartmann et al used TGA-MS to study the formation rate of surface contaminants of NCM851005 during wet storage, reporting that the observed mass loss was accompanied by the onset of H 2 O evolution at ≈160 °C and that of CO 2 evolution at ≈625 °C. Such mass loss is much greater in the samples exposed to humid air than in the pristine samples, and a significant increase occurs as storage time grows, which further confirms the Li + /H + exchange theory during ambient storage of Ni-rich CAMs.…”

Section: Exchange Of Lithium Ion and Protonmentioning

confidence: 99%

“…[16] For Ni-rich CAMs stored in air, early studies have found that it is not enough for the impurities generated by the reaction of residual lithium on the surface with air to explain the significant decline in battery performance, thus reporting that the top layer may consist of adsorbed hydroxyl, bicarbonate, carbonate, and crystalline Li 2 CO 3 . [35] Liu et al used SEM to observe LiNi 0.8 Co 0.2 O 2 for a long time and found that the transparent substance on the surface of the sample would partly disappear over time after storage. For this reason, they put forward the idea that there are adsorbed substances on the surface.…”

Section: Impurities Formed On the Surfacementioning

confidence: 99%

“…Among these, the last three evidences are more likely to support the mechanism of the proton‐cation exchange theory. [ 34,35 ] Recently, Hartmann et al. used TGA‐MS to study the formation rate of surface contaminants of NCM851005 during wet storage, reporting that the observed mass loss was accompanied by the onset of H 2 O evolution at ≈160 °C and that of CO 2 evolution at ≈625 °C.…”

Section: Evolution and Influence Of Storage Instability Of Ni‐rich Camsmentioning

confidence: 99%

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Air Instability of Ni‐Rich Layered Oxides–A Roadblock to Large Scale Application

Zhang

Yuan

Zhu

et al. 2022

Advanced Energy Materials

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Benefiting from the excellent lithium ions diffusion kinetics and considerable discharge specific capacity, Ni‐rich layered oxides have become the preferred selection cathode active materials (CAMs) for high energy density Li‐ion batteries. However, due to the distinctive electronic structure of nickel ions (Ni2+/3+/4+) and the strict criteria for sintering conditions, the Ni‐rich CAMs inherently suffer from notorious deterioration when in contact with the ambient air. This review provides a comprehensive and critical overview of air instability for Ni‐rich CAMs, a neglected but critical issue for large‐scale application. The fundamental understanding of derivation of air instability and characterizations is first given, followed by a discussion of evolution behaviors and the corresponding negative influence on fabricating properties of electrodes and electrochemical/safety performance of batteries. Afterward, various material modification strategies for improving air storage stability including pre‐treatment by doping and coating and post‐treatment by gas, wash, and heat are overviewed. Finally, some perspectives for further exploration to address the air instability issue and pave ways toward Ni‐rich CAMs’ practical applications are also proposed.

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Cathodes Coating Layer with Li‐Ion Diffusion Selectivity Employing Interactive Network of Metal‐Organic Polyhedras for Li‐Ion Batteries

Kim

et al. 2022

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200 mAh g −1 of the cathode due to the Ni 2+ / 4+ redox reaction at a high working voltage; this is regardless of restraining at the top of the O 2− 2p band and eventually leads to a high energy density of the cell. [3] However, NLCs have a poor cycling life, particularly at the highly delithiated state, owing to severe degradation by side reactions (electrolyte decomposition) on the cathode surface. High-valence Ni ions (Ni 3+ , Ni 4+ ) at the highly delithiated state promote the formation of the unwanted disordered rock salt phase near the surface and resistive cathode-electrolyte interphase (CEI) layer. This phase aggravates stability and charge transfer between active materials, thereby degrading cell performance. [4] Therefore, the surface stabilization of NLCs to prevent degradation and interfacial side reactions is essential for acquiring high energy density and long-term stability.Studies have demonstrated the protection of NLCs by surface coating. Dense coating layers passivate the cathode surface against electrolyte side reactions but nonporous insulating materials hinder Li + transport across the electrode and electrolyte, and electron transfer via the coating layer from/to conductive carbon and current collectors. Metal-organic frameworks (MOFs), a type of porous material, are considered coating materials due to their i) exceptional porosity (> 1000−10000 m 2 g -1 ), ii) stable and rigid structure formed by the coordination of metal ions and organic ligands, and iii) flexibility controlled by functional groups. [5] Although multiple attempts have been made to introduce MOFs as a bifunctional coating agent for cathode protection and selective Li ion transport pathways, it has not been feasible because i) their microcrystals prevent the formation of a homogeneous film on the cathode [6] and ii) large MOF particles form a thick layer impeding charge transfer and decreasing volumetric energy density.Metal-organic polyhedra (MOP), a class of emerging porous materials, are a potential substitute for MOF since they have similar pore structures. However, each pore in MOP can be isolated by removing the electrostatic interaction between their unit cells. [7] MOP unit cells interact with surfactants and increase their interaction with the aqueous medium. They are homogeneously dispersed in volatile solvents and uniformly deposited to form a thin film by the solution-based spray Surface modification of cathodes using Ni-rich coating layers prevents bulk and surface degradation for the stable operation of Li-ion batteries at high voltages. However, insulating and dense inorganic coating layers often impede charge transfer and ion diffusion kinetics. In this study, the fabrication of dual functional coating materials using metal-organic polyhedra (MOP) with 3D networks within microporous units of Li-ion batteries for surface stabilization and facile ion diffusion is proposed. Zr-based MOP is modified by introducing acyl groups as a chemical linkage (MOPAC), and MOPAC layers are homogenously coated by simple sp...

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Facile formulation and fabrication of the cathode using a self-lithiated carbon for all-solid-state batteries

Cited by 6 publications

References 50 publications

Preparation of Mg-Mn doped LiNiO2 via direct Indonesian Mixed Hydroxide Precipitate Lithiation

Preparation of Mg-Mn doped LiNiO2 via direct Indonesian Mixed Hydroxide Precipitate Lithiation

Air Instability of Ni‐Rich Layered Oxides–A Roadblock to Large Scale Application

Cathodes Coating Layer with Li‐Ion Diffusion Selectivity Employing Interactive Network of Metal‐Organic Polyhedras for Li‐Ion Batteries

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