Meltem Yanılmaz

• Istanbul Technical University

Correction for ‘N-doped carbon nanoparticles on highly porous carbon nanofiber electrodes for sodium ion batteries’ by Meltem Yanilmaz et al., RSC Adv., 2023, 13, 7834–7842, https://doi.org/10.1039/D3RA00635B.

The separator plays a crucial role in determining the safety and performance of lithium‐ion batteries (LIBs) by acting as a mediator between the cathode and anode, preventing electrical contact, and providing channels for ionic transport. Most commercially available LIB separators are polyolefin microporous separators. However, the low melting poin...

Lithium ion batteries are one of the most promising electrochemical energy storage systems. They generally consist of four components: anode, cathode, electrolyte, and separator. The separators are crucial for batteries since they prevent physical contact of electrodes and thus short circuit. In this study, reutilization of aramid fabric was highli...

Carbon nanofibers are promising for various applications such as energy storage, sensors, and biomedical applications; however, the brittle structure of nanofibers limits the usage of carbon nanofibers. For the first time, a facile and effective strategy is reported to fabricate flexible carbon nanofibers via a fast and safe nanofiber fabrication t...

Aquatic environments are being polluted by microplastics primarily originating from the washing of synthetic textiles. Microfibers (MF), which are microplastics in synthetic fibers, are consistently introduced into the environment with each domestic laundry cycle. To address this issue, we developed a specialized MF capture “barbed filter” (BF) by...

The nanostructured carbon materials are promising electrode materials and have been widely studied owing to their tailorable structures, which offer large active sites and reduce the path of transport for mass and charge and thus provide fast pathways for electrons in rechargeable batteries and supercapacitors [...]

Sodium-ion batteries (SIBs) have attracted significant attention because of the abundant resource and low-cost of sodium. Furthermore, flexible and wearable functional electronics have been presented as one of the most important emerging technology. Carbon nanofibers are promising candidates for flexible electrodes due to their high electronic cond...

Germanium has a high theoretical capacity as an anode material for sodium-ion batteries. However, germanium suffers from large capacity losses during cycling because of the large volume change and loss of electronic conductivity. A facile way to prepare germanium anodes is critically needed for next-generation electrode materials. Herein, centrifug...

Nitrogen doped carbon nanoparticles on highly porous carbon nanofiber electrodes were successfully synthesized via combining centrifugal spinning, chemical polymerization of pyrrole and a two-step heat treatment. Nanoparticle-on-nanofiber morphology with highly porous carbon nanotube like channels were observed from SEM and TEM images. Nitrogen dop...

Germanium is a promising anode material for sodium-ion batteries (SIBs) because of its high theoretical specific capacity, high ion diffusivity, and rate capability. However, large volume changes and pulverization deteriorate the cycling performance. In this study, flexible electrospun germanium/carbon nanofibers (Ge/CNFs) were prepared via electro...

Owing to their high electrical conductivity, high surface area, low density, high thermal stability, and chemical stability, carbon nanofibers have been used in many fields, including energy storage, electromagnetic shielding, filtering, composites, sensors, and tissue engineering. Considering the environmental impact of petroleum-based polymers, i...

With the increasing demand for energy storage and the quest to overcome the shortcomings of lithium-ion batteries, various zinc-based batteries are developing rapidly for their high safety, low cost and reliable ecological compatibility. Cellulosic materials made from abundant natural resources are becoming a widespread concern of scientists due to...

Sodium-ion batteries (SIBs) are promising alternatives to lithium-ion batteries as green energy storage devices because of their similar working principles and the abundance of low-cost sodium resources. Nanostructured carbon materials are attracting great interest as high-performance anodes for SIBs. Herein, a simple and fast technique to prepare...

Centrifugal spinning is a fast and safe nanofiber production technique and polyacrylonitrile (PAN) nanofibers have been widely studied for many applications including energy storage, filtration, sensors, and biomedical applications. Nanofiber morphology, specific surface area, porosity and average fiber diameter are important to determine the perfo...

The ever-increasing worldwide energy demand and the limited resources of fossil have forced the urgent adoption of renewable energy sources. Additionally, concerns over CO2 emissions and potential increases in fuel prices have boosted technical efforts to make hybrid and electric vehicles more accessible to the public. Rechargeable batteries are un...

Polyacrylonitrile (PAN)-based carbon precursor is a well-established and researched material for electrodes in energy storage applications due to its good physical properties and excellent electrochemical performance. However, in the fight of preserving the environment and pioneering renewable energy sources, environmentally sustainable carbon prec...

In this review, the recent developments on centrifugal spinning and characteristics of centrifugally-spun fibers are reviewed. In recent years, there have been great efforts to develop high performance materials for different applications including energy storage, tissue engineering, drug delivery and aerosol filtration. The performance of these ma...

Lithium–sulfur (Li–S) batteries are the most promising energy storage systems owing to their high energy density. However, shuttling of polysulfides detracts the electrochemical performance of Li–S batteries and thus prevents the commercialization of Li–S batteries. Here, TiO2@porous carbon nanofibers (TiO2@PCNFs) are fabricated via combining elect...

Lithium–sulfur (Li–S) batteries have attracted great interest owing to their high energy density. However, shuttling of polysulfides deteriorates the electrochemical performance of Li–S batteries and prevents their practical applications. Placing a conductive and porous interlayer structure between the cathode and the separator limits the shuttling...

Free-standing [email protected]2@porous carbon nanofiber ([email protected]2@PCNF) supercapacitor electrodes were fabricated through the electrodeposition of MnO2 nanoparticles onto electrospun PCNFs and subsequent chemical polymerization of aniline on the MnO2@PCNF composite. The introduced [email protected]2@PCNF electrodes combined the high pseu...

Flexible polyaniline-carbon nanofiber (PANI-CNF) composites were fabricated and evaluated for use as supercapacitor electrodes. Sol-gel and electrospinning techniques were employed to produce flexible carbon nanofibers and polyaniline coating was applied via in-situ chemical polymerization to further improve the electrochemical properties of the el...

Electrospun PVA/SiO2 separator membranes were presented and their electrochemical performance was evaluated for use in Li-ion batteries. Polyvinyl alcohol (PVA) was used to prepare nanofiber based membranes due to advantages such as low cost, water solubility, and biodegradability. Sol gel technique was employed to introduce SiO2 in PVA nanofibers....

Nylon 6,6 nanofiber membranes were produced by electrospinning technique and mechanical properties of the nylon 6,6 membranes prepared with different solvent systems were investigated. Nylon 6,6 solutions were prepared by dissolving nylon 6,6 in the solvent system of formic acid/trifluoroethyl alcohol with the ratios of 50/50, 75/25 and 100/0 (v/v)...

Electrospun nylon 6,6 composite nanofiber membranes containing TiO2 or SiO2 nanoparticles were fabricated, and their physical and electrochemical properties were assessed for use as high-strength, thermally stable separators for lithium-ion batteries. Experimental results demonstrated that TiO2/nylon 6,6 and SiO2/nylon 6,6 nanofiber membranes not o...

Nanofiber structured Na2Ti3O7 was synthesized via electrospinning process which was further used as an anode material for sodium-ion batteries for the first time. One-dimensional construction of Na2Ti3O7 composite could contribute to better electrochemical activity. It was demonstrated that the capacity of Na2Ti3O7 nanofibers was significantly impr...

SnO2 microfibers were prepared using a newly developed centrifugal spinning technology with subsequent thermal treatment. The as-prepared SnO2 microfibers were further treated with chemical vapor deposition (CVD) of acetylene using different durations of 30, 60, and 90 min. The surfaces of the CVD-treated SnO2 microfibers are covered with thin carb...

Glass fiber (GF) membrane is evaluated as a potential separator for lithium-sulfur batteries. It is found that GF membrane has a highly porous structure with superior thermal stability, resulting in high liquid electrolyte uptake and enhanced electrochemical performance. Li-S cells using GF membrane as the separator can retain a capacity of 617 mAh...

SnO2 microfibers were synthesized by a novel centrifugal spinning technology and were evaluated as the anode in sodium-ion batteries. The as-prepared SnO2 microfibers are composed of interconnected nanoparticles with small interparticle opening. The 1-demensional fibrous morphology, fine particle size and open pore structure together result in redu...

Electrospun nanofiber membranes have been extensively studied as separators in Li-ion batteries due to their large porosity, unique pore structure, and high electrolyte uptake. However, the electrospinning process has some serious drawbacks, such as low spinning rate and high production cost. The centrifugal spinning technique can be used as a fast...

Centrifugal spinning is a fast, cost-effective and safe alternative to the electrospinning technique, which is commonly used for making fiber-based separator membranes. In this work, SiO2/polyacrylonitrile (PAN) membranes were produced by using centrifugal spinning and they were characterized by using different electrochemical techniques for use as...

Polyaniline (PANI)–porous carbon nanofiber (PCNF) composites were generated by in situ polymerization of aniline on PCNFs for use as flexible, binder-less electrodes for high-performance supercapacitors. The effect of polymerization time on the electrode performance was studied by using symmetric cell configuration. Because of the high faradic curr...

Novel silicon/silica/carbon (Si/SiO 2 /C) composite nanofibers were synthesized by electrospinning and subsequent heat-treatment of a mixture of Si nanoparticles, sol-gel tetraethyl orthosilicate solution, and aqueous polyvinyl alcohol solution. These Si/SiO 2 /C nanofiber composites were also coated with amorphous carbon by chemical vapor depositi...

Novel silicon/silica/carbon (Si/SiO2/C) composite nanofibers were synthesized by electrospinning and subsequent heat-treatment of a mixture of Si nanoparticles, sol-gel tetraethyl orthosilicate solution, and aqueous polyvinyl alcohol solution. These Si/SiO2/C nanofiber composites were also coated with amorphous carbon by chemical vapor deposition (...

In this paper, the recent developments and their characteristics of membrane separators for lithium-ion batteries are reviewed. In recent years, there have been intensive efforts to develop advanced battery separators for rechargeable lithium-ion batteries for different applications such as portable electronics, electric vehicles, and energy storag...

Silicon is a promising high capacity (4200 mA h g(-1)) anode material for lithium ion batteries but the significant volume change (over 300%) of silicon during lithiation/delithiation remains a challenge in terms of silicon pulverization and solid-electrolyte-interphase (SEI) accumulation in the silicon composite electrode. To alleviate the volumet...

Si/C–C core–shell nanofiber structure was designed by dual nozzle coaxial electrospinning and subsequent carbonization. This core–shell nanofiber structure has Si/C composite as the core and carbon as the shell. Used as an anode in lithium-ion batteries, the carbon shell can help buffer the large volume expansion/contraction of the Si/C core during...

SiO2/polyvinylidene fluoride (PVDF) composite nanofiber-coated polypropylene (PP) nonwoven membranes were prepared by electrospinning of SiO2/PVDF dispersions onto both sides of PP nonwovens. The goal of this study was to combine the good mechanical strength of PP nonwoven with the excellent electrochemical properties of SiO2/PVDF composite nanofib...

In this work, a new method, consists of synthesis of urethane acrylate (UA) followed by in situ polymerization of pyrrole using cerium (IV) as an oxidant and UV‐curing of the composites, for preparing polypyrrole–UA (PPy–UA) composite films was described. It appeared that dielectric constants of the composites increased with increasing the PPy cont...

In this study, a factorial experimental design was used to study the effects of process parameters on nanofibre diameters, the voltage applied and the distance from the tip to collector. Nanofibres were produced using 10% concentration solution of polyurethane-tetrahydrofuran. The effects of solution parameters on the diameters of nanofibres are kn...

In this study, it was aimed to investigate the relationship between different knitted structures and some thermo-physiological comfort parameters. Wetting, wicking and drying properties of single jersey, 1 × 1 rib, 2 × 2 rib and interlock knitted fabrics made out of acrylic yarns were studied and experimental wicking height, wicking weight, transfe...

Polyurethane (PU)–polypyrrole (PPy) composite films and nanofibers were successfully prepared for the purpose of combining the properties of PU and PPy. Pyrrole (Py) monomer was polymerized and dispersed uniformly throughout the PU matrix by means of oxidative polymerization with cerium(IV) [ceric ammonium nitrate Ce(IV)] in dimethylformamide. Film...

The aim of this study is to investigate effects of some process parameters on the morphology, diameter and diameter distributions of the resulting electrospun polyurethane nanofibers. The electrospinning of polyurethane was carried out using the same polymer solvent system, varying the applied voltage and tip to collector distance. The morphology o...

There is a growing interest in development of textiles with electrical conductivity due to the variety of applications including electromagnetic interference shielding, electrostatic dissipating, antistatic applications, microwave reduction, gas sensors, biomechanical sensors. Polypyrrole is one of the most promising conductive polymers due to its...

In this study, the polyurethane based composites were prepared by solvent casting from dimethylformamid (DMF) solutions of Polyurethane-Polypyrrole (PU-PPy) in order to obtain the polyurethane based composites with enhanced dielectric properties for smart textile applications. From this research, it can be concluded that Glass Transition Temperatur...

Polyurethane/polypyrrole composites were prepared by the oxidative polymerization of pyrrole in polyurethane matrix. PU/PPy composite nanofibers were characterized by spectroscopic (Fourier Transform Infrared Spectroscopy in the Attenuated Total Reflection Mode by (FTIR-ATR)) and morphological (SEM) methods. The effects of pyrrole concentration on...