Revealing the Role of Liquid Metals at the Anode–Electrolyte Interface for All Solid-State Lithium-Ion Batteries

Mo, Fangjie; Ruan, Jiafeng; Fu, Wenbo; Fu, Bishi; Hu, Jun; Lian, Zixuan; Li, Shuyang; Song, Yun; Zhou, Yong‐Ning; Fang, Fang; Sun, Guang; Peng, Shuming; Sun, Dalin

doi:10.1021/acsami.0c11001

Cited by 16 publications

(14 citation statements)

References 40 publications

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“…More comprehensive information could also be found in our previous work. [ 18 ] The Ga metal generated during discharge is often amorphous, and its true phase state is hard to figure out by the ex situ XRD measurement. [ 19 ] To confirm the existence of Ga, TEM and DSC measurements were utilized.…”

Section: Resultsmentioning

confidence: 99%

Could Capacitive Behavior be Triggered in Inorganic Electrolyte‐Based All‐Solid‐State Batteries?

Long

Ruan

et al. 2022

Adv Funct Materials

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Recent studies in all‐solid‐state batteries (ASSBs) based on inorganic solid electrolytes (ISEs) have improved the energy density to a higher level. However, its commercialization is still delayed by many intrinsic limitations, among which the fast‐charging capability is not mentioned enough. Despite few elaborately selected electrolytes coupled with electrodes that can deliver an extremely high rate, the rate improvement strategy is still lacking. Here, a novel and effective strategy of introducing liquid metal is demonstrated to trigger the capacitive behavior in the ASSBs for the first time. Two paramount criteria of inducing capacitive behavior in ASSBs are proposed, and both of them are accomplished by utilizing liquid metal Ga. As a result, the capacitive behavior contribution to total charge storage reaches 73% at 1 mV s−1. Benefitted from the improved kinetics, both an excellent rate of performance (81% specific capacity retained at 5 C) and a good cyclability (0.02% decay per cycle during 800 cycles at 1 C) are delivered. The universality of the liquid metal induced capacitive behavior in ASSBs is further verified in multiple active materials. This work provides a fundamental understanding of the origin of the capacitive behavior and opens a new route for fast‐charging ASSBs.

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Section: Resultsmentioning

confidence: 99%

Could Capacitive Behavior be Triggered in Inorganic Electrolyte‐Based All‐Solid‐State Batteries?

Long

Ruan

et al. 2022

Adv Funct Materials

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“…and GaSb for the TiS 2 j LiBH 4 j GaSb ASSLIBs at 0.5 A g À 1 . [89] (Copyright 2020 American Chemical Society). c) Schematic illustrations showing the interface in ASSLMBs using PEO-based electrolyte and Pt modified electrolyte, and d) the cycling performance of the ASSLMBs at 0.5 C, over 2.5-3.8 V. [90] (Copyright 2020 The Royal Society of Chemistry).…”

Section: Methodsmentioning

confidence: 99%

“…Many Li-alloying materials have rapid Li + conductivity that can be used in the interlayer between a solid electrolyte and lithium metal. Mo et al [89] carried out the in situ generation of liquid metal Ga into Sb, alleviating interface contact and strain accommodation and showing a good rate and cycling performance in half cells (Figure 20a). They created a novel b) cycling performance of SnS 2 -RGO composites using EP-KPF, EP-KFSI, and DGM-KFSI electrolytes at 100 mA g À 1 .…”

Section: Solid-state Electrolytesmentioning

confidence: 99%

Alloy‐Type Anodes for High‐Performance Rechargeable Batteries

et al. 2022

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Alloy‐type anodes are one of the most promising classes of next‐generation anode materials due to their ultrahigh theoretical capacity (2–10 times that of graphite). However, current alloy‐type anodes have several limitations: huge volume expansion, high tendency to fracture and disintegrate, an unstable solid–electrolyte interphase (SEI) layer, and low Coulombic efficiency. Efforts to overcome these challenges are ongoing. This Review details recent progress in the research of batteries based on alloy‐type anodes and discusses the direction of their future development. We conclude that improvements in structural design, the introduction of a protective interface, and the selection of suitable electrolytes are the most effective ways to improve the performance of alloy‐type anodes. Furthermore, future studies should direct more attention toward analyzing their synergistic promoting effect.

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“…Finally, it is worth mentioning an interesting SSBs work adopting a Li-free metal anode revitalized by alloybased interphase. 119 In this work, Mo et al tried to tackle the interface problem between a metal-alloy anode, Sb, and the borohydride-based solid electrolyte LiBH 4 . In the SSBs scenario, Sb, and many other Li alloying anodes, are more susceptible than LMA to various contact issues linked to the volume change during the (de)lithiation.…”

Section: Intermetallic Interphases In Ssbsmentioning

confidence: 99%

Intermetallic interphases in lithium metal and lithium ion batteries

Sun

Peng

2021

InfoMat

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A robust electrode-electrolyte interface is the cornerstone for every battery system, as demonstrated in the meandering history of the development of Li-ion batteries (LIBs). In the thrust to replace the graphite anode with more energetic ones in LIBs, the effectual strategy for stabilizing the original graphiteelectrolyte interface becomes obsolete and a new anode-electrolyte interface needs reconfiguration. Unfortunately, this interface has become the Achilles' heel for those anodes, such as Li-metal anode (LMA) and Si-based anode owing to their excessive reductivity, enormous volume change, and so forth. Encouragingly, in the last decade, impressive progress has been made on taming these extremely unstable interfaces and on the solid-state batteries (SSBs) that are reported to be less susceptible to parasitic reactions. One of the distinguished strategies is the application of artificial Li-alloying intermetallic interphases onto the surface of LMA, via the direct introduction of foreign metals to the Li anode or indirect hetero-cations doping in the electrolyte, to regulate the Li deposition/ stripping behavior, which has markedly improved the stability of the LMAelectrolyte interface. In parallel, the intermetallic interphases are also witnessed to profoundly enhance the anode-solid electrolyte contact and the corresponding charge transfer kinetics in various SSBs. This review will provide a panoramic overview of the application of the intermetallic interphases at the anode-electrolyte interfaces in the lithium metal batteries (LMBs), SSBs, and also derivative works in the conventional LIBs, which will focus on different concepts, methodologies, and understandings from the encircled studies.

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Revealing the Role of Liquid Metals at the Anode–Electrolyte Interface for All Solid-State Lithium-Ion Batteries

Cited by 16 publications

References 40 publications

Could Capacitive Behavior be Triggered in Inorganic Electrolyte‐Based All‐Solid‐State Batteries?

Could Capacitive Behavior be Triggered in Inorganic Electrolyte‐Based All‐Solid‐State Batteries?

Alloy‐Type Anodes for High‐Performance Rechargeable Batteries

Intermetallic interphases in lithium metal and lithium ion batteries

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