Comparative studies on water repellent coatings prepared by spin coating and spray coating methods

Mahadik, Satish A.; Pedraza, F.; Mahadik, Sarika S.

doi:10.1016/j.porgcoat.2016.11.006

Cited by 26 publications

(6 citation statements)

References 30 publications

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“…However, the uniformity of the coating on the substrate surface is poor and the bonding strength to the substrate is poor. 97 A 3D cross-linked network structure is heat-resistant, and dimensionally stable. Such structures have more internal pores for lubricant storage and locking than other porous structures.…”

Section: Fabrication Of Slips Porous Structure Surfaces and Selection...mentioning

confidence: 99%

Recent advances of slippery liquid-infused porous surfaces with anti-corrosion

et al. 2023

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Section: Fabrication Of Slips Porous Structure Surfaces and Selection...mentioning

confidence: 99%

Recent advances of slippery liquid-infused porous surfaces with anti-corrosion

et al. 2023

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“…Spray coating [66,67] is a kind of coating method, which disperses the paint into uniform and mist droplets by spray gun or atomizer, and then spreads them on the surface of materials followed by a curing (chemical cross-linking) process. Spin coating [68,69] includes three steps: batching, high-speed rotation, and film formation by volatilization. The thickness of film formation can be controlled by controlling the rotational speed, the amount of the drop, the concentration and viscosity of the solution.…”

Section: Spray Spin and Dip Coatingmentioning

confidence: 99%

Multifunction of Biomimetic Liquid Infused Systems Derived from SLIPS Theory: A Review

Xia

Zhang

Guo

2023

Adv Materials Inter

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On this basis, two theoretical models appeared to the world. In 1936, Wenzel added a surface roughness factor "r" to Young's equations. [7] In 1944, Cassie and Baxter showed that the composite interface of solid and air can affect the superhydrophobicity. [8] Since then, the theory and analysis of surface has aroused enormous interest among scientists and researchers. In 1997, Barthlott and Neinhuis proposed the "lotus effect," [9] which is a hydrophobic and self-cleaning effect originated from the hierarchical structure of lotus leaves. A flurry of research on superhydrophobic surfaces came after that. Gradually, research on fabrication of surfaces with special wetting property became popular.The commonly used materials for daily applications contain textiles, glass, metal, and their alloys whose surfaces can be protected from being wetted, contaminated, or fouled by water and oil pollutants. Most metal materials will inevitably be oxidized when they encounter common liquid corrosion media, such as water, and the oxide film cannot effectively protect them. If the metal is covered with superhydrophobic surface, the air cushion contained in the micro-nano composite structure on the surface will protect the metal and separate the direct contact between the substrate and the liquid. It makes it difficult for corrosive ions to reach the metal surface, which significantly improves the corrosion resistance of the metal. However, the air cushion is unstable and easily replaced by liquid under external pressure and high temperature, losing its superhydrophobicity and corroded by liquid.At present, there are two main research directions of liquid repelling surfaces: Cassie-Baxter water contact state surfaces and lubricant-liquid contact state surfaces. The Cassie-Baxter contact surface designation was inspired by lotus leaves, butterfly wings and Inaba, mainly included superamphiphobic, superhydrophobic, and superoleophobic surfaces. These artificial surfaces can be combinate by low surface energy substance modification and micro-nano structures. Besides, with the inspiration of Nepenthes, lubricant-liquid contact state surfaces are designed. In 2011, Joanna Aizenberg of Harvard University and her colleagues first introduced "slippery liquid infused porous surface" (SLIPS)-that each consist of a film of lubricating liquid locked in place by a micro/nano porous substrate. [10] Compared with superhydrophobic surface, its air layer is replaced by immiscible liquid layer, which provides a more Slippery liquid infused porous surface (SLIPS) inspired by the microstructure of carnivorous Nepenthes has the potential to be used in a wide range of fields, including nautical, industrial, medical, etc. Due to their excellent optical transparency, self-healing after mechanical injury and controllable wetting properties, SLIPS has attracted extensive research interest. With appropriate lubricants, sufficient performance will be armed to the surface so as to adapt for further requirements. In this review, the first part focuses on the b...

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“…Strategies reported for surface passivation of highly reactive materials mainly include spin coating [ 67 ] and in‐situ coating [ 68‐69 ] via polymerization. However, these coating layers are often quite thick and thus would reduce the energy density of the battery.…”

Section: Surface Passivation Of Li‐carbon Compositementioning

confidence: 99%

Review—Lithium Carbon Composite Material for Practical Lithium Metal Batteries

Zheng

et al. 2023

Chin. J. Chem.

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Comprehensive Summary Lithium (Li) metal is considered ideal for high‐energy‐density batteries due to its extremely high specific capacity and low electrochemical potential. However, uncontrolled Li dendrite growth and interfacial instability during repeated Li plating/stripping have limited the practical applicability of Li metal batteries (LMBs). Over the past decades, substantial efforts have been devoted to solving the challenges associated with Li metal anodes. Our research team has developed several Li‐carbon (Li‐C) microsphere composites in recent years to suppress the formation of Li dendrites and achieve a decent cycle life. In this account, we summarize our advances in the design and application of Li‐C composites, which include the developments in the structure and chemical composition of high‐specific‐capacity Li‐C composites, strategies for surface passivation of the micro‐spherical Li‐C composites, and applications of the Li‐C composite in next‐generation high‐energy‐density Li‐ion, Li‐air, and solid‐state LMBs. Finally, we discuss future perspectives for developing high‐performance Li metal anodes and endeavors to realize the practical applications of LMBs. What is the most favorite and original chemistry developed in your research group? Accurate control of surface chemistry of battery materials in general, and Li metal in particular, with self‐assembled monolayers (SAM). How do you get into this specific field? Could you please share some experiences with our readers? Li metal is an ideal anode material for rechargeable batteries except that it is extremely reactive towards the environment and that the conversion reaction tends to deposit Li metal into dendrites. My group developed a Li‐C composite by infiltrating molten Li into carbon nanotube microspheres. This composite largely alleviated the dendrite growth problem of Li anode, but the reactivity of Li metal caused the Li‐C microsphere impossible to process outside Ar gloveboxes. A passivation method is needed. I recalled the molecular self‐assembly technique I learned and used in my Ph.D. dissertation, where I used the Au‐thiol SAM chemistry to control the surface chemical interactions between atomic force microscopy (AFM) probes and samples. The question is whether we can find the right chemistry between Li metal and self‐assembling molecules. This was how we started the journey of SAM on Li metal, and later further developed the idea to other battery materials such as high‐Ni NCM cathode, etc. How do you supervise your students? Students first need to build their own knowledge base, a set of scientific concepts and theoretical framework they are comfortable with and a set of experimental skills they are confident in. Then we define research directions together. Once we agree on a direction and the student starts to explore the direction with his/her knowledge and skills, here it comes the most enjoyable part of supervising students: I get to ask questions. It is through addressing questions, students learn to practice critical thinking, pol...

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Comparative studies on water repellent coatings prepared by spin coating and spray coating methods

Cited by 26 publications

References 30 publications

Recent advances of slippery liquid-infused porous surfaces with anti-corrosion

Recent advances of slippery liquid-infused porous surfaces with anti-corrosion

Multifunction of Biomimetic Liquid Infused Systems Derived from SLIPS Theory: A Review

Review—Lithium Carbon Composite Material for Practical Lithium Metal Batteries

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