Air-stable dopamine-treated garnet ceramic particles for high-performance composite electrolytes

Jia, Mengyang; Bi, Zhijie; Shi, Chuan; Zhao, Ning; Guo, Xiangxin

doi:10.1016/j.jpowsour.2020.229363

Cited by 60 publications

(44 citation statements)

References 45 publications

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“…The AgNWs were deposited directly on the LLZTO pellets. During preparation, the deposition of AgNWs in the aqueous solution leads to the formation of Li 2 CO 3 on the LLZTO surfaces . This causes the strong signal of Li 2 CO 3 during the FT-IR measurement.…”

Section: Resultsmentioning

confidence: 99%

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O₂ Batteries

Wang

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

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All-solid Li−O 2 batteries have been constructed with Ag nanowire (AgNW) cathodes coated on Au-buffered garnet ceramic electrolytes and Li anodes on the other sides. Benefiting from the clean contacts of Li + , e − , and O 2 on the AgNWs, the surface pathway reactions are demonstrated. Upon discharge, two types of Li 2 O 2 morphologies appear. The film-like Li 2 O 2 forms around the smooth surfaces of AgNWs, and hollow disk-like Li 2 O 2 forms at the joints in between the AgNWs as well as at the garnet/AgNW interfaces. The formation of films and hollow disks is in accordance with the process of O 2 + Li + + e − → LiO 2 and 2LiO 2 → Li 2 O 2 + O 2 , indicating that the disproportionation of LiO 2 occurs at the solid interfaces. During the initial charge, decomposition occurs below the potential of 3.5 V, indicating the process of Li 2 O 2 → LiO 2 + Li + + e − and LiO 2 → Li + + e − + O 2 rather than Li 2 O 2 → 2Li + + 2e − + O 2 . The Li 2 O 2 decomposition starts at the AgNWs/Li 2 O 2 interfaces, causing the film-like Li 2 O 2 to shrink and the gas to release, followed by the collapse of hollow disk-like Li 2 O 2 . The results here clearly disclose the Li−O 2 reaction mechanism at the all-solid interfaces, facilitating a deep understanding of key factors influencing the electrochemical performance of the solid-state Li−O 2 batteries. KEYWORDS: solid-state Li−O 2 batteries, all-solid interfaces, carbon-free cathodes, Li 2 O 2 growth and decomposition, environmental TEM characterization

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Section: Resultsmentioning

confidence: 99%

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O₂ Batteries

Wang

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

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“…In 2014, F I G U R E 5 Diagrammatic sketch and performance of garnets with coating layers: (A) concept graph of air-stable mechanism of garnet@PDA; the XRD pattern (B), Raman spectra (C) and FT-IR spectra (D) of untreated (Aged) and treated with PDA (DA) LLZTO (Reproduced with permission. 90 Copyright 2021, Elsevier); (E) concept graph of air-stable mechanism of garnet@h-BN (Reproduced with permission. 91 Copyright 2020, American Chemical Society); (F) concept graph of air-stable and Li freedendrite mechanism of garnet@LPO (Reproduced with permission.…”

Section: Sulfide-based Ssesmentioning

confidence: 99%

“…Compared with untreated LLZTO, the air stability of LLZTO protected by PDA shell was greatly improved (Figure 5A). 90 As a result, H 2 O and CO 2 invalidly attacked the garnet ceramic particle. No Li 2 CO 3 was formed on PDA‐treated LLZTO, which was confirmed by XRD patterns, FT‐IR spectra, and Raman spectra (Figure 5B–D).…”

Section: The Strategy Toward Air‐stable Inorganic Ssesmentioning

confidence: 99%

“…No Li 2 CO 3 was formed on PDA‐treated LLZTO, which was confirmed by XRD patterns, FT‐IR spectra, and Raman spectra (Figure 5B–D). 90 Moreover, Arava et al 91 used hexagonal boron nitride (h‐BN) nanosheets as a coating layer to modify the surface of Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZT). With a high dielectric constant and Young's modulus, h‐BN was able to protect the garnet SSEs from the attack of Li.…”

Section: The Strategy Toward Air‐stable Inorganic Ssesmentioning

confidence: 99%

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Air‐stable inorganic solid‐state electrolytes for high energy density lithium batteries: Challenges, strategies, and prospects

Chen

Guan

Chu

et al. 2021

InfoMat

104

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Solid-state batteries have been considered as promising next-generation energy storage devices for potentially higher energy density and better safety compared with commercial lithium-ion batteries that are based on organic liquid electrolytes. However, in terms of indispensable solid-state electrolytes, there are remaining issues to be solved before entering the market. Most solid-state electrolytes are air-sensitive, which causes a complex and expensive cell assembly and impressible interface. Therefore, the solid-state electrolytes are expected to be atmosphere-stable, which will undoubtedly bring significant benefits to solid-state battery manufacturing. This review covers air-stabilityrelated issues of different types of inorganic solid-state electrolytes and the corresponding strategies. First, we provide an overview of solid-state electrolytes and solid-state batteries, including their history and advantages/disadvantages. Then, different types of solid-state electrolytes are selected as examples to illustrate the unfavorable interactions in air and the corresponding adverse effects. Next, according to recent advances, we summarize the effective strategies of constructing different types of air-stable inorganic solid-state electrolytes. Finally, perspectives on designing accessible air-stable solid-state electrolytes are provided, aiming to achieve the assembly of high-performance solid-state batteries in the atmosphere.

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“…The lithium-metal anode (LMA) is considered to be the most promising anode as it has the lowest electrochemical potential (−3.04 V vs SHE) and the highest theoretical capacity (3860 mA·h/g). − Batteries coupled with an LMA have been widely used, particularly, batteries with energy densities greater than 400 W h/kg. − However, the LMA suffers from uneven Li deposition and formation of dendrites, which usually leads to a short circuit and eventually battery failure . Moreover, uncontrolled side reactions between metallic Li and organic electrolytes also lead to performance degradation. ,− Fortunately, solid-state electrolytes, including inorganic ceramic electrolytes and polymer electrolytes, demonstrate significant advantages in addressing the aforementioned challenges, including the formation of Li dendrites and consumption of liquid organic electrolytes. − Ceramic electrolytes, which exhibit a higher Li + transference number, a wide electrochemical window, and a higher shear modulus, endow the utilization of LMAs with improved safety performance. , However, the poor interface compatibility and large interface resistance between ceramic electrolytes and the electrode continue to present huge challenges for their practical application. − Although the enhanced interface wettability could relieve the contact resistance, poor mechanical strength and instability under higher potentials (lower than 4.0 V) prohibit the direct practical utilization of polymer electrolytes. − …”

Section: Introductionmentioning

confidence: 99%

Immobilizing Ceramic Electrolyte Particles into a Gel Matrix Formed In Situ for Stable Li-Metal Batteries

Chang

et al. 2021

ACS Appl. Mater. Interfaces

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Hybrid solid/gel electrolytes (SGEs) have generated much research attentions because of their capability to suppress Li dendrite growth and improve battery safety. However, the interfacial compatibility of the electrode/electrolyte or polymer/inorganic ceramics within hybrid electrolytes remains challenging for practical applications. Herein, an SGE is fabricated by confining ceramic particles (Li 7 La 3 Zr 2 O 12 ; LLZO) into in situ formed tetraethylene glycol dimethyl ether (G4)-based gel electrolytes within assembled cells. A hierarchical layered structure is formed when LLZO settles near the Li anode within the liquid electrolyte during the gradual gelatinization process. Good interfacial compatibility is obtained from good contact with the liquid G4 component. The LLZO layer also serves as an ionic sieve to redistribute the Li deposition. This SGE endows stable Li stripping/plating cycling over 800 h at 0.5 mA/cm 2 (60 °C). Moreover, Li-metal batteries with an SGE coupled with LiFePO 4 and an air cathode both exhibit superior cycling performance. This work presents a promising strategy for hierarchically layered SGEs for high-performance Li-metal batteries.

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Air-stable dopamine-treated garnet ceramic particles for high-performance composite electrolytes

Cited by 60 publications

References 45 publications

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O₂ Batteries

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O₂ Batteries

Air‐stable inorganic solid‐state electrolytes for high energy density lithium batteries: Challenges, strategies, and prospects

Immobilizing Ceramic Electrolyte Particles into a Gel Matrix Formed In Situ for Stable Li-Metal Batteries

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Air-stable dopamine-treated garnet ceramic particles for high-performance composite electrolytes

Cited by 60 publications

References 45 publications

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O2 Batteries

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O2 Batteries

Air‐stable inorganic solid‐state electrolytes for high energy density lithium batteries: Challenges, strategies, and prospects

Immobilizing Ceramic Electrolyte Particles into a Gel Matrix Formed In Situ for Stable Li-Metal Batteries

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Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O₂ Batteries

Clear Representation of Surface Pathway Reactions at Ag Nanowire Cathodes in All-Solid Li–O₂ Batteries