Densification and charge transport characterization of composite cathodes with single-crystalline LiNi0.8Co0.15Al0.05O2 for solid-state batteries

Nam, Jae Seok; Ran, Weerawat To A; Lee, Seok Hee; Vuong, Thuy Hoai Linh; Jo, Hannah; Lee, Jung-Hun; Hwang, Soo Min; Kim, Young‐Jun

doi:10.1016/j.ensm.2022.01.015

Cited by 16 publications

(8 citation statements)

References 58 publications

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“…41,44 Therefore, our previous study using composite electrodes consisting of single-crystalline NCA and LPSCl reported an additional definition of each semicircle of symmetric cells as (i) Lf -semicircles; by the chemical capacitance of local charge neutrality between Li + and e − ; (ii) Mf -semicircles; by electrostatic capacitance at interparticle-boundary and blocking layers interface with composite electrodes. 23 In contrast to our previous study, it was confirmed that the Mf -semicircle was roughly divided into Mf 1 - and Mf 2 -. As the NCA content increased, the Mf 1 -semicircle was dominant in ion-blocking cells but not in e-blocking cells.…”

Section: Resultscontrasting

confidence: 89%

“…37,38 The volume of 1 g of the composite cathode ( V exp and V theo ) and porosity ( φ ) was expressed as follows:where the ‘Σ j ’ indicates the total summation of each electrode component (NCA, LPSCl, Super-C65, and PTFE). In contrast, when the composite mixture was fabricated to a pellet-type electrode (composite pellet) through a uniaxial pressing method under sufficient uniaxial pressure without PTFE, 23 it showed relatively low electrode density and high porosity. For simplification, a composite pellet was fabricated by applying a uniaxial press of 1500 MPa to a composite mixture in which only NCA and LPSCl were uniformly mixed (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…1c). Since the composite cathode in SSBs shows the characteristics of a mixed ionic-electronic conductor (MIEC), 23,38,39 we constructed an e-blocking symmetric cell that blocks electron ow while allowing only ions to ow and an ion-blocking symmetric cell that allows only electrons to ow while blocking ion ow to avoid complex resistance that occurred by both charge carriers (Li + and e − ). The ion-blocking symmetric cell conguration is [SSkcomposite electrodekSS], and the electron-blocking symmetric cell conguration is [Li foilkLPSClkcomposite elec-trodekLPSClkLi foil], as shown in Fig.…”

Section: Effective Electronic-and Ionic-conductivity Of Composite Cat...mentioning

confidence: 99%

“…[18][19][20] Although numerous studies have identied the issue mentioned above, few have examined the relationship between the improvement in connectivity of particles through densication and the electrochemical characteristics of composite cathodes for SSBs. [21][22][23] Recently, in constructing a composite cathode, the 'dry-lm process' that uses a polytetrauoroethylene (PTFE) binder without solvent has been acknowledged as a viable alternative to the slurry process for better particle contact while maintaining a dense microstructure throughout the electro-chemical performance. 8,[24][25][26][27][28] Due to the problem that the polar solvent accelerates the chemical instability of SSE, a non-polar or lesspolar solvent was applied in a slurry process, and the selection of a binder suitable for the solvent ensured the mechanical properties of an electrode were limited.…”

Section: Introductionmentioning

confidence: 99%

“…18–20 Although numerous studies have identified the issue mentioned above, few have examined the relationship between the improvement in connectivity of particles through densification and the electrochemical characteristics of composite cathodes for SSBs. 21–23…”

Section: Introductionmentioning

confidence: 99%

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Section: Resultscontrasting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Effective Electronic-and Ionic-conductivity Of Composite Cat...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design of densified nickel-rich layered composite cathode via the dry-film process for sulfide-based solid-state batteries

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Progress and Challenges of Ni‐Rich Layered Cathodes for All‐Solid‐State Lithium Batteries

Zheng,

Peng,

Liang

et al. 2024

Adv Funct Materials

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Ni‐rich layered oxides are recognized as one of the most promising candidates for cathodes in all‐solid‐state lithium batteries (ASSLBs) due to their intrinsic merits, such as high average voltage and specific capacity. However, their application is profoundly hindered by sluggish interfacial lithium‐ion (Li+)/electron transfer kinetics, which is primarily caused by surface lithium residues, structural transformation, Li/Ni mixing, H2/H3 phase transition, and microcracks. Furthermore, electro‐chemo‐mechanical failures at the cathode/solid‐state electrolyte (SSE) interface, including interfacial side reactions, space‐charge layer (SCL) formation, and interfacial physical disconnection, accelerate capacity fading. This work provides a systematic overview of these challenges and fundamental insights into utilizing Ni‐rich layered cathodes in ASSLBs. Additionally, several key parameters, such as cost, energy density, pressure, and environmental temperature, are evaluated to meet the specific requirements of ASSLBs for commercial applications. Moreover, the representative modification strategies and future research directions for exploring advanced Ni‐rich layered cathode‐based ASSLBs are outlined. This review aims to provide a comprehensive understanding and essential insights to expedite the application of Ni‐rich layered cathodes in ASSLBs.

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Rethinking the Electrode Multiscale Microstructures: A Review on Structuring Strategies toward Battery Manufacturing Genome

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Huang³

et al. 2023

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The success of liquid/solid‐state batteries is fundamentally determined by the electrode microstructures, which is particularly true for high‐energy‐density electrodes with either thick configuration or high‐capacity active materials. Unfortunately, high‐energy‐density electrodes usually suffer from fast performance degradation due to various challenging issues in microstructures. Therefore, a better understanding of electrode microstructures and the strategies toward optimizing them are in urgent need by the research community and battery industries. In this review, the authors attempt to rethink and comprehensively understand the multiscale microstructures for particularly thick electrodes and to summarize the corresponding structuring strategies. Specifically, in analogy to proteins, the multiscale electrode microstructures are classified into the primary structures of rigid building blocks, the secondary structures of active material microenvironment, and the tertiary structures of electrode architectures. Meanwhile, the design principles and structuring strategies at different levels of microstructures are detailed with consideration given to efficiency, energy consumption, eco‐friendliness, and scalability. Finally, a concept of a battery manufacturing genome based on structuring strategy profile (similar to amino acid profile) is proposed as the forthcoming opportunity for the future connection of machine learning with battery microstructure optimization, which may promote the development of next‐generation on‐demand batteries.

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Densification and charge transport characterization of composite cathodes with single-crystalline LiNi0.8Co0.15Al0.05O2 for solid-state batteries

Cited by 16 publications

References 58 publications

Design of densified nickel-rich layered composite cathode via the dry-film process for sulfide-based solid-state batteries

Design of densified nickel-rich layered composite cathode via the dry-film process for sulfide-based solid-state batteries

Progress and Challenges of Ni‐Rich Layered Cathodes for All‐Solid‐State Lithium Batteries

Rethinking the Electrode Multiscale Microstructures: A Review on Structuring Strategies toward Battery Manufacturing Genome

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