Fabrication of platinum nanowires by centrifugal electrospinning method for proton exchange membrane fuel cell

Nanofibers have received extensive attention in the fields of biomedicine, energy catalysis, environmental sciences, and filtration owing to their high specific surface area and controllable porosity. Electrospinning and centrifugal spinning are the two most effective methods for fabricating nanofibers. However, the low preparation efficiency of electrospinning limits the use of that technology in the large-scale production of nanofibers. The morphology of nanofibers prepared by centrifugal spinning is slightly inferior to electrospinning. Centrifugal electrospinning has great industrial application potential. It is a new method for fabricating nanofibers formed by combining centrifugal and electrostatic forces. It can efficiently fabricate nanofibers with good alignment. In particular, the use of polymer melt as the spinning precursor for centrifugal electrospinning can effectively address the problem of solvent residue in the fiber. In this review, the working principle and device used for centrifugal electrospinning is introduced, the influence of different components of the spinning device on the spinning process is discussed, and the effects of spinning parameters on fiber properties are explained. Then, some applications of nanofibers fabricated are described by centrifugal electrospinning in various areas, including energy, biomedicine, and filtration. Finally, the challenges of centrifugal electrospinning are summarized, and a perspective on future research is provided.

“…Centrifugal electrospinning is an effective method for the preparation of Pt nanowires. [92] Figure 12. a) schematic diagram of solution hosting spinneret with three compartments.…”

Section: Energy Fieldmentioning

confidence: 99%

Review of the Principles, Devices, Parameters, and Applications for Centrifugal Electrospinning

Chen

et al. 2022

“…Furthermore, Huang et al [101] also used a centrifugal electrospinning method to produce platinum nanowires for use as part of a proton exchange membrane fuel cell (PEMFC). The nanowires were produced from a polymer solution composed of PVP and hexachloroplatinic acid hydrate (Cl 6 H 4 OPt).…”

Section: Centrifugal and Multi-pin Electrospinningmentioning

confidence: 99%

Management of Operational Parameters and Novel Spinneret Configurations for the Electrohydrodynamic Processing of Functional Polymers

Silva

Torres‐Giner

Vicente

et al. 2022

Functional materials have become key drivers in the development of multiple high‐end technologies. Electrohydrodynamic processing (EHDP) is a straightforward method to generate polymer micro‐ and nanostructures that can be applied to the food, pharmaceutical, environmental, and biomedical areas, among others, since these can yield materials with higher performance. Some of the EHDP's advantages over other polymer processing technologies rely on its high versatility, by which the final assembly can be modified in different ways to combine materials with multiple properties and also in different morphological structures, and the use of room processing conditions, meaning that thermolabile ingredients can be incorporated with minimal activity loss. This review provides the historical background, process basics, and the state‐of‐the‐art of the most recent advances achieved in the EHDP technology dealing with the control of its operational parameters to optimize processability and achieve end‐product quality and homogeneity. It also focuses on the newly developed modes of operation and spinneret configurations that can lead to the formation of a wide range of micro‐ and nanostructures with different functionalities and solve some of its current technical limitations. Finally, it also further highlights the potential applications of the resultant hierarchical functional polymer‐based materials obtained by these novel EHDP methods.

“…[ 26 ] After that, CS became the second choice to produce nonwoven fabrics in lab scale without special technical requirements. The challenges of the CS at its early phase included fiber collection and beaded fiber morphologies, which were well addressed as high voltage was introduced, namely electro‐centrifugal spinning (ECS), [ 27–52 ] as shown in Figure 1c.…”

Section: Introductionmentioning

confidence: 99%

A Review on Current Nanofiber Technologies: Electrospinning, Centrifugal Spinning, and Electro‐Centrifugal Spinning

Yagi

Ashour

et al. 2022

Nanofiber‐based products are widely used in the fields of public health, air/water filtration, energy storage, etc. The demand for nonwoven products is rapidly increasing especially after COVID‐19 pandemic. Electrospinning is the most popular technology to produce nanofiber‐based products from various kinds of materials in bench and commercial scales. While centrifugal spinning and electro‐centrifugal spinning are considered to be the other two well‐known technologies to fabricate nanofibers. However, their developments are restricted mainly due to the unnormalized spinning devices and spinning principles. High solution concentration and high production efficiency are the two main strengths of centrifugal spinning, but beaded fibers can be formed easily due to air perturbation or device vibration. Electro‐centrifugal spinning is formed by introducing a high voltage electrostatic field into the centrifugal spinning system, which suppresses the formation of beaded fibers and results in producing elegant nanofibers. It is believed that electrospinning can be replaced by electro‐centrifugal spinning in some specific application areas. This article gives an overview on the existing devices and the crucial processing parameters of these nanofiber technologies, also constructive suggestions are proposed to facilitate the development of centrifugal and electro‐centrifugal spinning.