Lithium-ion transport in inorganic active fillers used in PEO-based composite solid electrolyte sheets

Song, Young-Woong; Heo, Kookjin; Lee, Jongkwan; Hwang, Dahee; Kim, Minyoung; Kim, Su-Jin; Kim, Jaekook; Lim, Jinsub

doi:10.1039/d1ra06210g

Cited by 18 publications

(5 citation statements)

References 32 publications

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“…Overall, it should be highlighted that the reactivity of the alkali metal counter electrode plays a vital role for the interfacial resistance and capacity retention, which is often not given in a regular LE. However, to decrease the evaluated temperature, which generally triggers irreversible side reactions during cycling, the ionic conductivity along with the mechanical stability of K-based SPEs should be further enhanced through advanced materials design, for example, block-copolymer structures or addition of ceramic fillers (such as Al 2 O 3 , SiO 2 , TiO 2 , and so forth) − that provide boosted cation transport along with structural integrity.…”

Section: Resultsmentioning

confidence: 99%

Poly(ethylene oxide)-Based Electrolytes for Solid-State Potassium Metal Batteries with a Prussian Blue Positive Electrode

Khudyshkina

Morozova

Butzelaar

et al. 2022

ACS Appl. Polym. Mater.

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Potassium-ion batteries are an emerging post-lithium technology that are considered ecologically and economically benign in terms of raw materials' abundance and cost. Conventional cell configurations employ flammable liquid electrolytes that impose safety concerns, as well as considerable degrees of irreversible side reactions at the reactive electrode interfaces (especially against potassium metal), resulting in a rapid capacity fade. While being inherently safer, solid polymer electrolytes may present a solution to capacity losses owing to their broad electrochemical stability window. Herein, we present for the first time a stable solid-state potassium battery composed of a potassium metal negative electrode, a Prussian blue analogue K 2 Fe[Fe(CN) 6 ] positive electrode, and a poly(ethylene oxide)-potassium bis(trifluoromethanesulfonyl)imide polymer electrolyte. At an elevated operating temperature of 55 °C, the solid-state battery achieved a superior capacity retention of 90% over 50 cycles in direct comparison to a conventional carbonatebased liquid electrolyte operated at ambient temperature with a capacity retention of only 66% over the same cycle number interval.

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Section: Resultsmentioning

confidence: 99%

Poly(ethylene oxide)-Based Electrolytes for Solid-State Potassium Metal Batteries with a Prussian Blue Positive Electrode

Khudyshkina

Morozova

Butzelaar

et al. 2022

ACS Appl. Polym. Mater.

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“…These different results in Li/SPE/LFP and Li/CSE‐ITO10/LFP cells are owing to the reduced ohmic polarization and stable Li‐ion flux through the percolation network at the ITO NP–PEO interface. [ 45,46 ] This cyclability of the Li/CSE‐ITO10/LFP is exceptionally superior to previous strategies which aimed to achieve long‐term cycling stability (inset of Figure 5e and Table S4, Supporting Information). [ 47–54 ] Furthermore, we assembled pouch‐type LFP/CSE‐ITO10/Li cell to verify the industrial scale‐up possibility (Figure S12, Supporting Information).…”

Section: Resultsmentioning

confidence: 89%

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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“…It explains that higher loadings induce lower ionic conductivity by decreasing the percolating amount of polymer and increasing the tortuosity of conducting pathways. Moreover, higher loading of fillers leads to aggregation due to a surface energy gap between fillers and polymer [126]. Zheng and Hu [127] have showcased this phenomenon by studying PEO/LiTFSI electrolytes with LLZO from 5 to 50 wt%.…”

Section: Active Fillersmentioning

confidence: 99%

3D printing of solid polymer electrolytes by fused filament fabrication: challenges towards in-space manufacturing

Bourseau,

Grugeon,

Lafont

et al. 2023

J. Phys. Energy

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A new chapter of space exploration is opening with future long-duration space missions toward the Moon and Mars. In this context, the European Space Agency (ESA) is developing out-of-the-earth manufacturing abilities, to overcome the absence of regular supplies for astronauts’ vital needs (food, health, housing, energy). Additive manufacturing is at the heart of this evolution because it allows the fabrication of tailorable and complex shapes, with a considerable ease of process. Fused Filament Fabrication (FFF), the most generalized 3D printing technique, has been integrated into the International Space Station (ISS) to produce polymer parts in microgravity. Filament deposition printing has also a key role to play in Li-ion battery (LIB) manufacturing. Indeed, it could reduce manufacturing cost & time, through one-shot printing of LIB, and improve battery performances with suitable 3D architectures. Thus, additive manufacturing via FFF of LIB in microgravity would open the way to In-Space Manufacturing (ISM) of energy storage devices. However, as liquid and volatile species are not compatible with a space station-confined environment, solvent-free 3D printing of polymer electrolytes is a necessary step to make battery printing in microgravity feasible. This is a challenging stage because of a strong opposition between the mechanical requirements of the feeding filament and electrochemical properties. Nowadays, polymer electrolyte manufacturing remains a hot topic and lots of strategies are currently being studied to overcome their poor ionic conductivity at room temperature. This work firstly gives a state of the art on the 3D printing of Li-ion batteries by FFF. Then, a summary of ionic conduction mechanisms in polymer electrolytes permits to understand the several strategies studied to enhance polymer electrolytes performances. Thanks to the confrontation with the specifications of FFF printing and the microgravity environment, polymer blends and composite electrolytes turn out to be the most suitable strategies to 3D print a lithium-ion polymer battery in microgravity.

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Lithium-ion transport in inorganic active fillers used in PEO-based composite solid electrolyte sheets

Abstract: A lithium ion transport mechanism according to particle size was demonstrated in a PEO-based composite solid electrolyte using inorganic active fillers.

Cited by 18 publications

References 32 publications

Poly(ethylene oxide)-Based Electrolytes for Solid-State Potassium Metal Batteries with a Prussian Blue Positive Electrode

Poly(ethylene oxide)-Based Electrolytes for Solid-State Potassium Metal Batteries with a Prussian Blue Positive Electrode

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

3D printing of solid polymer electrolytes by fused filament fabrication: challenges towards in-space manufacturing

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