Plasma optimized Li7La3Zr2O12 with vertically aligned ion diffusion pathways in composite polymer electrolyte for stable solid-state lithium metal batteries

Yu, Genxi; Wang, Yaping; Li, Kai; Sun, Shangqi; Chen, Jian; Sun, ZhengMing

doi:10.1016/j.cej.2021.132874

Cited by 27 publications

(18 citation statements)

References 50 publications

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“…V F theory is proposed by Cohen et al and developed by Duda et al It is of great significance in studying the diffusion phenomenon in simple polymer systems. − Occupied Volume ( V O ) and V F constitute the Total Volume ( V T ) of the polymer. Free of Volume is the ratio of V F to V T .…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Diffusion Mechanisms of Dissolved Gases in Transformer Oil Influenced with Moisture Based on Molecular Dynamics Simulation

Jiang

Yang

et al. 2022

ACS Omega

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Dissolved Gas Analysis (DGA) of insulating oil is widely used for diagnosing transformer incipient faults. Moisture is a major contaminant and degradation byproduct of transformer insulating oil. In this paper, molecular dynamics simulation was used to study the influence of moisture on the diffusion movement of dissolved gases in the insulating oil. Cycloalkanes (C20H42), alkanes (C20H38), and aromatic hydrocarbons (C20H26) are selected as the basic structural units in the constructed transformer oil simulation system. 0%, 1%, 3%, and 5% moisture molecules are added to insulating oil, respectively, and the insulating oil generates seven kinds of gas molecules through cracking. With an anhydrous model used as a benchmark, we researched the diffusion trajectory, the diffusion coefficient (D), free volume (V F), and the moisture–gas interaction energy of each gas molecule as a function of moisture content. Through this study, we found that the increase of moisture content enlarges the V F value of dissolved gas in insulating oil, which makes the gas in oil easier to diffuse. Besides, the moisture can also alter the mean square displacement (MSD) of dissolved gases; the mutual energy of molecules is mainly affected by the electrostatic interaction energy. This study can contribute to a better understanding of the influence of different moisture contents on the diffusion movement of dissolved gas in transformer oil from the micro level.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Diffusion Mechanisms of Dissolved Gases in Transformer Oil Influenced with Moisture Based on Molecular Dynamics Simulation

Jiang

Yang

et al. 2022

ACS Omega

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“…There are many options when it comes to passive fillers, including ceramics, carbon-based materials, or metal–organic frameworks, each one with distinct effects in the SPE properties. Zeolites are appearing as a promising option because of their ability to stabilize the SPE structure, improving the cyclability of the battery …”

Section: Lithium-ion Batteries: Performance and Sustainabilitymentioning

confidence: 99%

“…40 Further, ether-based electrolytes in situ polymerized by a ring-opening reaction in the presence of aluminum fluoride (AlF 3 ) show promising characteristics to overcome the limited oxidative stability and poor interfacial charge transport of current SPEs. 41 There are many options when it comes to passive fillers, including ceramics, 45 carbon-based materials, 46 or metal− organic frameworks, 47 each one with distinct effects in the SPE properties. Zeolites are appearing as a promising option because of their ability to stabilize the SPE structure, improving the cyclability of the battery.…”

Section: Lithium-ion Batteries: Performance and Sustainabilitymentioning

confidence: 99%

Toward Sustainable Solid Polymer Electrolytes for Lithium-Ion Batteries

2022

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Lithium-ion batteries (LIBs) are the most widely used energy storage system because of their high energy density and power, robustness, and reversibility, but they typically include an electrolyte solution composed of flammable organic solvents, leading to safety risks and reliability concerns for high-energy-density batteries. A step forward in Li-ion technology is the development of solid-state batteries suitable in terms of energy density and safety for the next generation of smart, safe, and high-performance batteries. Solid-state batteries can be developed on the basis of a solid polymer electrolyte (SPE) that may rely on natural polymers in order to replace synthetic ones, thereby taking into account environmental concerns. This work provides a perspective on current state-of-the-art sustainable SPEs for lithium-ion batteries. The recent developments are presented with a focus on natural polymers and their relevant properties in the context of battery applications. In addition, the ionic conductivity values and battery performance of natural polymer-based SPEs are reported, and it is shown that sustainable SPEs can become essential components of a next generation of high-performance solid-state batteries synergistically focused on performance, sustainability, and circular economy considerations.

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“…CSEs can have fillers that are active Li-ion conductors or fillers that are passive. Active fillers that are engineered to have a certain morphology have been reported recently and have conductivities higher than other composites or PEO alone. − A major issue for gaining a higher conductivity with CSEs is nonuniform distribution of the ceramic filler in the polymer matrix or the agglomeration of filler particles. One of the approaches to limit agglomeration of fillers is engineering the filler nanostructure or morphology.…”

Section: Introductionmentioning

confidence: 99%

A Multiscale Hollow Spherical LATP Active Filler Improves Conductivity and Mechanical Strength in Composite Solid Electrolytes for Li Batteries

2022

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Polymer-based electrolytes would be ideal for all-solid-state Li metal batteries due to the superior processability of polymers and their ability to make good interfaces with electrode materials. However, polymer electrolytes have lower room temperature Li+ conductivities than desired. Composite solid electrolytes (CSEs) containing both polymer and ceramic filler have far greater conductivity than the polymer alone, and it is believed this is due to conduction paths along the polymer–ceramic interface. A strategy often pursued for increasing conductivity has been to engineer the filler with a high aspect ratio shape, such as nanorods or interconnected nanofibers. In this work we employ a multiscale hollow spherical filler, which is not directional but achieves similar conductivity to those with fibrous morphologies. The hollow spherical shape avoids agglomeration and provides continuous Li+ transfer channels. We fabricated multiscale hollow spherical ceramic Li1.3Al0.3Ti1.7(PO4)3 (LATP) nanoparticles for use in a poly(ethylene oxide) (PEO) matrix. This network also provided structural support and enhanced the mechanical properties of the polymer matrix, which is important for a battery electrolyte. The resulting CSE membrane had room temperature ionic conductivity of 1.64 × 10–4 S/cm. Li/Li symmetric cells using this CSE showed no short circuits for 500 h cycling at a current density 0.1 mA cm–2. Control cells using standard LATP powder showed higher overpotential and dendrite failure, as did the polymer membrane with no LATP.

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Plasma optimized Li7La3Zr2O12 with vertically aligned ion diffusion pathways in composite polymer electrolyte for stable solid-state lithium metal batteries

Cited by 27 publications

References 50 publications

Diffusion Mechanisms of Dissolved Gases in Transformer Oil Influenced with Moisture Based on Molecular Dynamics Simulation

Diffusion Mechanisms of Dissolved Gases in Transformer Oil Influenced with Moisture Based on Molecular Dynamics Simulation

Toward Sustainable Solid Polymer Electrolytes for Lithium-Ion Batteries

A Multiscale Hollow Spherical LATP Active Filler Improves Conductivity and Mechanical Strength in Composite Solid Electrolytes for Li Batteries

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