A Self-Healing Anode for Li-Ion Batteries by Rational Interface Modification of Room-Temperature Liquid Metal

Huang, Chenghao; Wang, X.D.; Cao, Q.P.; Zhang, Dongxian; Jiang, J.Z.

doi:10.1021/acsaem.1c01951

Cited by 19 publications

(14 citation statements)

References 42 publications

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“…To investigate the reversible alloying process between Li and LM-P NPs, the cyclic voltammetry test was performed for the Li|LM-P@Cu cell at a scan rate of 0.01 mV s –1 in a voltage range of 0–1.5 V (versus Li + /Li) (Figure S7). The result corresponded to previous reports on the alloying of Li–Ga and Li–In. ,, …”

Section: Resultssupporting

confidence: 92%

“…The result corresponded to previous reports on the alloying of Li−Ga and Li−In. 60,65,78 Contact angle measurements revealed the wetting behavior of an ether-based liquid electrolyte on the different Cu substrates (Figure S8). The smallest contact angle (5.3°) was obtained for LM-P@Cu, indicating a low surface tension and good wetting.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Polymer-Stabilized Liquid Metal Nanoparticles as a Scalable Current Collector Engineering Approach Enabling Lithium Metal Anodes

Liu

Zhu

et al. 2022

ACS Appl. Energy Mater.

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Dendrites and dead lithium formation over prolonged cycling have long been challenges that hinder the safe implementation of metallic Li anodes. Herein, we employ polymer-stabilized liquid metal nanoparticles (LM-P NPs) of eutectic gallium indium (EGaIn) to create uniform Li nucleation sites enabling homogeneous lithium electrodeposition. Block copolymers of poly(ethylene oxide) and poly(acrylic acid) (PEO-b-PAA) were grafted onto the EGaIn surface, forming stabilized, well-dispersed NPs. Using a scalable spray coating approach, LM-P NPs were fabricated on copper current collectors, providing lithiophilic PEO sites and interactive carboxyl groups to guide Li deposition. The Li-EGaIn alloying process greatly reduced the Li+ diffusion barrier, enabling fast Li transport through the coating layer, resulting in decreased nucleation overpotential. Therefore, about five times lower Li nucleation overpotential was obtained on the LM-P modified Cu with an optimal composition of the polymers than the bare Cu substrates. DFT computations was used to reveal the binding properties between the LM-P layer and Li. Due to the regulated Li plating/stripping process, as-obtained 30 μm Li anodes paired with LiNi0.8Co0.1Mn0.1O2 (NCM811) with a negative/positive electrode capacity (N/P) ratio ∼ 10 exhibited stable cycling performance at 0.5C for over 250 cycles, with an average Coulombic efficiency of 99.55%. Ultrathin Li (1 μm) anodes with an N/P ratio ∼ 0.6 were also demonstrated in Li|LiFePO4 cells, which examined the stabilization of Li by LM-P NPs and monitored practical loadings of Li anodes that are close to anode-free systems.

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Section: Resultssupporting

confidence: 92%

Section: ■ Results and Discussionmentioning

confidence: 99%

Polymer-Stabilized Liquid Metal Nanoparticles as a Scalable Current Collector Engineering Approach Enabling Lithium Metal Anodes

Liu

Zhu

et al. 2022

ACS Appl. Energy Mater.

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“…EGaIn was prepared by mixing pure Ga and In at an elevated temperature in vacuum. , All EGaIn/PDMS composites were prepared by mixing uncured PDMS (Sylgard 184, Dow Corning) and EGaIn according to a certain volume ratio and adding a certain amount of n-hexane as a solvent. All EGaIn/PDMS samples were made by a Sonics Vibra-Cell Ultrasonic Processor VCX 750 at 50% amplitude inserted a fixed distance (≈1 mm) above the bottom of a beaker.…”

Section: Methodsmentioning

confidence: 99%

Soft and Stretchable Liquid Metal–Elastomer Composite for Wearable Electronics

Huang

Wang

Cao

et al. 2022

ACS Appl. Mater. Interfaces

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Soft devices, especially capacitive stress (or strain) sensors, are important for applications, including wearable medical monitoring, electronic skin, and soft robotics. The incorporation of liquid metal particles (LMPs) into highly deformable elastomers as inclusions ameliorates the mechanical compliance caused by a rigid filler. The high dielectric constant and liquid feature of LMPs are suitable for soft sensors with high sensitivity and a large real-time dynamic detection range. Here, a class of LM−elastomer composites are introduced with elastic and high dielectric properties, making them uniquely suitable for the application of soft stress sensors. The prepared stretchable soft stress sensor can detect the bending degree of the finger, monitor physiological signals in real time, and distinguish the vibration from the pronunciation of different letters. The nanoscale X-ray computational tomography (nano-CT) measurements indeed detect the changes of LMPs under stress, i.e., LMPs in the matrix distribute from uneven to relatively uniform, agglomerate, and even connect each other to have a conduction path in the composition with high LMP contents, which cause the changes in the physical properties of devices under operation. The cognition of LMP changes in composites under stress is instructive for promoting their further applications in the field of soft devices.

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“…applied eutectic GaIn (EGaIn) nanoparticles with modified surface energy as the stable anode of batteries and improved the phenomenon that bulk Ga‐based LM easily falls off from the collector due to its high surface energy. [ 63 ] Meng et al. proposed a LM‐modified nanoporous SiGe (NP‐SIGE) alloy electrode, which can accommodate electrode expansion, mitigate the instantaneous mechanical stress, and repair the electrode surface.…”

Section: Self‐healing Strategies In Electrodementioning

confidence: 99%

Exploration and Application of Self‐Healing Strategies in Lithium Batteries

Wan

Cui

et al. 2023

Adv Funct Materials

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Lithium batteries (LBs) are developed tremendously owing to their excellent energy density as well as cyclic persistence, exhibiting promising applications from portable devices to e‐transportation and grid fields. However, with the ever‐increasing demand for intelligent wearable electronics, more requests are focused on high safety, good durability, and satisfied reliability of LBs. The self‐healing route, which can simulate the ability of organic organisms to repair damage and recover initial function through its intrinsic vitality, is believed to be an efficient strategy to alleviate the unavoidable physical or chemical fatigue and damage issues of LBs, beneficial for the realization of the above mentioned high requests. In this review, the applicability and development of self‐healing materials are summarized in electrodes, electrolytes, and interfacial layers in recent years, focusing on exploring the feasibility of different self‐healing strategies in LBs, discussing the advantages and disadvantages of existing strategies in different parts of batteries, and indicating the possible research directions for beginners who are interested in this field. Finally, the critical challenges and the future research directions as well as opportunities are prospected.

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A Self-Healing Anode for Li-Ion Batteries by Rational Interface Modification of Room-Temperature Liquid Metal

Cited by 19 publications

References 42 publications

Polymer-Stabilized Liquid Metal Nanoparticles as a Scalable Current Collector Engineering Approach Enabling Lithium Metal Anodes

Polymer-Stabilized Liquid Metal Nanoparticles as a Scalable Current Collector Engineering Approach Enabling Lithium Metal Anodes

Soft and Stretchable Liquid Metal–Elastomer Composite for Wearable Electronics

Exploration and Application of Self‐Healing Strategies in Lithium Batteries

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