A SuperLEphilic/Superhydrophobic and Thermostable Separator Based on Silicone Nanofilaments for Li Metal Batteries

Yang, Yanfei; Li, Bucheng; Li, Lingxiao; Seeger, Stefan; Zhang, Junping

doi:10.1016/j.isci.2019.06.010

Cited by 40 publications

(30 citation statements)

References 62 publications

(114 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A key role of tuned separators is to affect the electrolyte wetting characteristics of the membranes, in turn affecting the contact angle of the electrolyte with the current collector/metal anode. [127][128][129][130][131] This is another mechanism by which ion flux homogenization occurs. A poorly electrolyte wetted separator may translate to poor electrolyte wetting of the collector.…”

Section: Understanding the Functionality Of Membranesmentioning

confidence: 99%

Review of Emerging Concepts in SEI Analysis and Artificial SEI Membranes for Lithium, Sodium, and Potassium Metal Battery Anodes

Liu

Mitlin

2020

Advanced Energy Materials

349

250

View full text Add to dashboard Cite

Lithium metal batteries (LMBs), sodium metal batteries (SMBs), and potassium metal batteries (KMBs) are receiving extensive attention in scientific literature. [1,2] The specific capacity of lithium, sodium, and potassium metal anodes is 3861 − , 1165 − , and 678 mAh g −−1 , which is substantially higher than that of graphite or hard carbons employed for ion battery anodes. For all three metal battery systems, achieving long-term stable and safe metal anode performance would be potentially transformative. However, growth of dendrites is a ubiquitous problem for each system, to date inhibiting wide scale commercial application of LMBs, SMBs, and KMBs in rechargeable cells. [3-6] The well-known risk is that dendrites will penetrate the separator and reach the cathode, resulting in a short circuit, potentially causing thermal runaway, burning, and even explosions. This is largely why Li metal anodes were originally abandoned in favor of graphite. [2,7] Less dramatically, dendrites result in a severe cell impedance increase, pouch swelling, as well as electrolyte drying. [3,8] The science around Li, Na, and K metal anodes is rapidly advancing. It is recognized that the structure of the solid electrolyte interface (SEI) plays a crucial role in determining the cyclability of metal anodes. [4,5] The SEI serves multiple roles, including limiting further side-reactions between the metal and the electrolyte, as well as promoting uniform metal deposition by regulating the solid-state ion flux. An ideal SEI layer has properties along the following: High cation conductance but also high electrical resistance, stable thickness close to a few nanometers, high mechanical toughness (combination of strength and ductility) leading to a tolerance to charginginduced volumetric changes, insolubility in the electrolyte, and stability over a wide range of operating temperatures and voltages. A stable SEI is an accepted prerequisite for safe battery performance, be it with a metal or an ion insertion anode. [6] The characteristics of SEI growth, gradual and uniform versus rapid and heterogeneous, is a key indicator whether or not dendrites form. [9-11] The dominant focus of many reports is on the spatially averaged SEI chemistry. [12,13] However recent progress brings fourth site-specific concepts in the SEI analysis, Anodes for lithium metal batteries, sodium metal batteries, and potassium metal batteries are susceptible to failure due to dendrite growth. This review details the structure-chemistry-performance relations in membranes that stabilize the anodes' solid electrolyte interphase (SEI), allowing for stable electrochemical plating/stripping. Case studies involving Li, Na, and K are presented to illustrate key concepts. "Classical" versus "modern" understandings of the SEI are described, with an emphasis on the new structural insights obtained through novel analytical techniques, including in situ liquid-secondary ion mass spectroscopy, titration gas chromatography, and tip-enhanced Raman spectroscopy. This Review highlights diver...

show abstract

Section: Understanding the Functionality Of Membranesmentioning

confidence: 99%

Review of Emerging Concepts in SEI Analysis and Artificial SEI Membranes for Lithium, Sodium, and Potassium Metal Battery Anodes

Liu

Mitlin

2020

Advanced Energy Materials

349

250

View full text Add to dashboard Cite

show abstract

“…The most widely used commercially available separator in Li secondary batteries is the microporous polyolefin. Due to their performance 97,100 such as good chemical stability, uniform pore structure and distribution, and low cost, 101,102 polyethylene (PE), polypropylene (PP) and their hybrids are becoming the most representative separator materials in this field. However, there are plenty of factors that limit their extensive development—their poor wettability and absorbability in liquid electrolytes, causing low conductivity and high impedance of Li ions in liquid electrolyte.…”

Section: Strategiesmentioning

confidence: 99%

“…The addition of silicon nanomaterials also enhances the properties of polymer membranes. For example, Li et al were first to report silicon nanowires (SNFs) grown on the surface of the PE membrane (Celgard 2400) leading to the fabrication of superlephilic/superhydrobic separators (Figure 11(B)) 100 . In such a design, the wettability, Li ion conductivity and thermal stability of the membrane are significantly improved due to the addition of the SNFs.…”

Section: Strategiesmentioning

confidence: 99%

“…Modification of the traditional polyolefin membrane has been well developed and studied; however, these modifications can come at a cost. According to Yang et al, there are defects can arise due to the modification of the polyolefin membrane, such as; blocking the ion transport channels and increasing thickness, and reducing Li + conductivity shown to increase the impedance of the batteries 100,109,110 . As can be clearly shown in Figure 10, modifying the surface of polyolefin membrane, leads to thickening of the membrane.…”

Section: Strategiesmentioning

confidence: 99%

Section: Strategiesmentioning

confidence: 99%

See 2 more Smart Citations

Strategies to anode protection in lithium metal battery: A review

Zhao

Liu

et al. 2021

InfoMat

166

View full text Add to dashboard Cite

Lithium metal batteries (LMBs) are considered the most promising energy storage devices for applications such as electrical vehicles owing to its tremendous theoretical capacity (3860 mAh g−1). However, the serious safety issues and poor cycling performance caused by the dendritic crystal growth during deposition are concerned for any rechargeable batteries with a lithium metal anode. To make widespread adoption a possibility, considerable efforts have been devoted to suppressing lithium (Li) dendrite growth. In this review, the recent strategies to developing dendrite free Li anode, including constructing an artificial solid electrolyte interface, current collector modification, separator film improvement, and electrolyte additive, are summarized. The merits and shortcomings for different strategies are reviewed and a general summary and perspective on the next generation rechargeable batteries are presented.

show abstract

Preparation of Stable Superhydrophobic Coatings on Complex‐Shaped Substrates

Zhang

Wei

Zhang

et al. 2022

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

Superhydrophobic surfaces have potential applications in many fields, but are seriously hindered by their complicated preparation methods and low mechanical stability. Thus, novel strategies for efficient preparation of robust superhydrophobic surfaces on various substrates are highly desired. Here, the preparation of stable superhydrophobic coatings on complex‐shaped substrates by the combination of phase separation and dip‐coating is reported. The coatings show excellent superhydrophobicity for both water and other frequently used liquids, superior impalement resistance, and high stability. Moreover, this strategy can make diverse complex‐shaped substrates superhydrophobic, outperforming the conventional methods. The strategy also has many other merits such as simple, fast (<1 min), scalable (50 kg stock solution per batch and large superhydrophobic samples), and low cost (7.8 CNY m−2 or 1.2 UDS m−2). The superhydrophobic coatings may find applications in many fields including anticorrosion and antiicing, and the findings here will inspire straightforward preparation of robust superhydrophobic coatings on diverse substrates.

show abstract

A SuperLEphilic/Superhydrophobic and Thermostable Separator Based on Silicone Nanofilaments for Li Metal Batteries

Cited by 40 publications

References 62 publications

Review of Emerging Concepts in SEI Analysis and Artificial SEI Membranes for Lithium, Sodium, and Potassium Metal Battery Anodes

Review of Emerging Concepts in SEI Analysis and Artificial SEI Membranes for Lithium, Sodium, and Potassium Metal Battery Anodes

Strategies to anode protection in lithium metal battery: A review

Preparation of Stable Superhydrophobic Coatings on Complex‐Shaped Substrates

Contact Info

Product

Resources

About