Textile‐Type Lithium‐Ion Battery Cathode Enabling High Specific/Areal Capacities and High Rate Capability through Ligand Replacement Reaction‐Mediated Assembly (Adv. Energy Mater. 36/2021)

Kwon, Minseong; Nam, Donghyeon; Lee, Seokmin; Kim, Yongju; Yeom, Bongjun; Moon, Jun Hyuk; Lee, Seung Woo; Ko, Yongmin; Cho, Jinhan

doi:10.1002/aenm.202170139

Cited by 4 publications

(12 citation statements)

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“…In Figure , to investigate the electrochemical performance and stability of the composite electrolytes in an all‐solid‐state Li‐metal battery system, EIS, rate capability, and long‐term cycling stability tests were carried out using a LiFePO 4 (LFP) cathode and Li‐metal anode. [ 40,41 ] Owing to the dramatically increased ionic conductivity of CSE‐ITO10, the all‐solid‐state Li/CSE‐ITO10/LFP cells exhibited a lower total resistance (558 Ω) than the Li/SPE/LFP cell (1330 Ω) derived from the EIS data (Figure 5a). Moreover, the Li/CSE‐ITO10/LFP cell has a significantly reduced cathode/electrolyte interfacial resistance (233.6 Ω) compared with that of the Li/SPE/LFP cell (697.3 Ω), indicating favorable charge transfer at the interface of CSE‐ITO10 and the LFP cathode.…”

Section: Resultsmentioning

confidence: 99%

Surface Oxygen Vacancy Inducing Li‐Ion‐Conducting Percolation Network in Composite Solid Electrolytes for All‐Solid‐State Lithium‐Metal Batteries

Yun

Cho

Ryu

et al. 2023

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Composite solid electrolytes (CSEs) are newly emerging components for all‐solid‐state Li‐metal batteries owing to their excellent processability and compatibility with the electrodes. Moreover, the ionic conductivity of the CSEs is one order of magnitude higher than the solid polymer electrolytes (SPEs) by incorporation of inorganic fillers into SPEs. However, their advancement has come to a standstill owing to unclear Li‐ion conduction mechanism and pathway. Herein, the dominating effect of the oxygen vacancy (Ovac) in the inorganic filler on the ionic conductivity of CSEs is demonstrated via Li‐ion‐conducting percolation network model. Based on density functional theory, indium tin oxide nanoparticles (ITO NPs) are selected as inorganic filler to determine the effect of Ovac on the ionic conductivity of the CSEs. Owing to the fast Li‐ion conduction through the Ovac inducing percolation network on ITO NP–polymer interface, LiFePO4/CSE/Li cells using CSEs exhibit a remarkable capacity in long‐term cycling (154 mAh g−1 at 0.5C after 700 cycles). Moreover, by modifying the Ovac concentration of ITO NPs via UV‐ozone oxygen‐vacancy modification, the ionic conductivity dependence of the CSEs on the surface Ovac from the inorganic filler is directly verified.

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Section: Resultsmentioning

confidence: 99%

Surface Oxygen Vacancy Inducing Li‐Ion‐Conducting Percolation Network in Composite Solid Electrolytes for All‐Solid‐State Lithium‐Metal Batteries

Yun

Cho

Ryu

et al. 2023

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“…In this case, the slurry‐coated FCCs (denoted slurry‐FCCs) displayed nonuniform fibril structures with aggregated phases and blocked pores (Figure 3b), which occurred mainly due to the high viscosity of slurries and unfavorable interfacial interactions among electrode components. Particularly, since the aggregates of poorly conductive Fe 3 O 4 NPs and the blocked pores could severely restrict the charge transfer within electrodes and the full utilization of the large surface area of the FCCs, [ 27 ] it was reasonable to expect that the performance of slurry‐FCCs was inferior to that of the (Fe 3 O 4 NP/CCN) 20 ‐FCCs.…”

Section: Resultsmentioning

confidence: 99%

“…[ 26 ] Besides, when porous FCCs are utilized as 3D current collectors, conventional coating methods have much trouble uniformly depositing highly concentrated and viscous slurries on entire regions ranging from the exterior to the interior of the FCCs. [ 27 ] In this case, the aggregation and segregation of electrode components due to unfavorable interfacial interactions can block the numerous voids of the porous FCCs.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanocluster‐Mediated Nanoblending Assembly for Binder‐Free Energy Storage Electrodes with High Capacities and Enhanced Charge Transfer Kinetics

et al. 2023

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The effective spatial distribution and arrangement of electrochemically active and conductive components within metal oxide nanoparticle (MO NP)-based electrodes significantly impact their energy storage performance. Unfortunately, conventional electrode preparation processes have much difficulty addressing this issue. Herein, this work demonstrates that a unique nanoblending assembly based on favorable and direct interfacial interactions between high-energy MO NPs and interface-modified carbon nanoclusters (CNs) notably enhances the capacities and charge transfer kinetics of binder-free electrodes in lithium-ion batteries (LIBs). For this study, carboxylic acid (COOH)-functionalized carbon nanoclusters (CCNs) are consecutively assembled with bulky ligand-stabilized MO NPs through ligand-exchange-induced multidentate binding between the COOH groups of CCNs and the surface of NPs. This nanoblending assembly homogeneously distributes conductive CCNs within densely packed MO NP arrays without insulating organics (i.e., polymeric binders and/or ligands) and prevents the aggregation/segregation of electrode components, thus markedly reducing contact resistance between neighboring NPs. Furthermore, when these CCN-mediated MO NP electrodes are formed on highly porous fibril-type current collectors (FCCs) for LIB electrodes, they deliver outstanding areal performance, which can be further improved through simple multistacking. The findings provide a basis for better understanding the relationship between interfacial interaction/structures and charge transfer processes and for developing high-performance energy storage electrodes.

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“…In general, the rough and porous nature facilitates the loading of active materials and the transport of ions. [153,154] For example, the multilayer composite electrode fabricated via the assembling of NH 2 -and COOH-functionalized CNT and dioleamidestabilized LiFePO 4 nanoparticles (DA-LFP NPs) onto the surface of cellulose textiles (C-textiles) using LbL displayed a remarkable specific capacitance of 196 mAh g −1 and high rate capability; this electrode displayed highly flexible mechanical properties since the large area surface of porous textile prevents the agglomeration or precipitation of active materials, and the excellent interface design provides better charge transfer kinetics, [20] as shown Figure 11c-f. However, the thin film structures with minimum possible defects (tens to hundreds of nanometers) are necessary to facilitate the desired charge transport, like sliver mirror reaction [155] and optoelectronic materials [156,157] onto paper.…”

Section: Cnf Sheetsmentioning

confidence: 99%

mentioning

confidence: 99%

Advanced Functionalized Materials Based on Layer‐by‐Layer Assembled Natural Cellulose Nanofiber for Electrodes: A Review

Du,

Zhang,

Zhang

et al. 2023

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The depletion of fossil fuel resources and its impact on the environment provide a compelling motivation for the development of sustainable energy sources to meet the increasing demand for energy. Accordingly, research and development of energy storage devices have emerged as a critical area of focus. The electrode materials are critical in the electrochemical performance of energy storage devices, such as energy storage capacity and cycle life. Cellulose nanofiber (CNF) represents an important substrate with potentials in the applications of green electrode materials due to their environmental sustainability and excellent compatibility. By utilizing the layer‐by layer (LbL) process, well‐defined nanoscale multilayer structure is prepared on a variety of substrates. In recent years, increasing attention has focused on electrode materials produced from LbL process on CNFs to yield electrodes with exceptional properties, such as high specific surface area, outstanding electrical conductivity, superior electrochemical activity, and exceptional mechanical stability. This review provides a comprehensive overview on the development of functional CNF via the LbL approach as electrode materials.

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Textile‐Type Lithium‐Ion Battery Cathode Enabling High Specific/Areal Capacities and High Rate Capability through Ligand Replacement Reaction‐Mediated Assembly (Adv. Energy Mater. 36/2021)

Cited by 4 publications

References 0 publications

Surface Oxygen Vacancy Inducing Li‐Ion‐Conducting Percolation Network in Composite Solid Electrolytes for All‐Solid‐State Lithium‐Metal Batteries

Surface Oxygen Vacancy Inducing Li‐Ion‐Conducting Percolation Network in Composite Solid Electrolytes for All‐Solid‐State Lithium‐Metal Batteries

Carbon Nanocluster‐Mediated Nanoblending Assembly for Binder‐Free Energy Storage Electrodes with High Capacities and Enhanced Charge Transfer Kinetics

Advanced Functionalized Materials Based on Layer‐by‐Layer Assembled Natural Cellulose Nanofiber for Electrodes: A Review

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