Yury Gogotsi

Yury Gogotsi
Drexel University | DU · Department of Materials Science and Engineering

Ph.D., D.Sc.

About

1,188
Publications
478,876
Reads
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162,650
Citations
Additional affiliations
September 2000 - present
Drexel University
Position
  • Professor (Full)
Education
May 1984 - September 1986
September 1978 - April 1984

Publications

Publications (1,188)
Article
Innovative therapies are urgently needed to combat cancer. Thermal ablation of tumor cells is a promising minimally invasive treatment option. Infrared light can penetrate human tissues and reach superficial malignancies. MXenes are a class of 2D materials that consist of carbides/nitrides of transition metals. The transverse surface plasmons of MX...
Article
Full-text available
Combining nanoparticles in well-designed architecture with complementary properties is an attractive strategy used for developing multi-functional, high-performance materials. Herein, to explore the mechanism of Li-ions uptake and storage potential of layered ternary carbides (MAX phases), we report on the Ti2SC and Ti3SiC2 with two-dimensional (2D...
Article
Ferric vanadate (FeVO4) is a desirable anode candidate for lithium-ion battery (LIB) and sodium-ion battery (SIB) because of its high theoretical capacity, low cost and ease of synthesis. However, its practical application is hindered by its volume expansion during the Li⁺/Na⁺ insertion/extraction and low electronic conductivity. Herein, flexible a...
Article
Cs2AgBiBr6 is considered an emerging candidate for lead-free inorganic double perovskite solar cells (PSCs). However, the photovoltaic performance of Cs2AgBiBr6 is restricted while the reported power conversion efficiencies (PCEs) are almost lower than 3%. Here, we employed D149 indoline dye to sensitize the TiO2 electron transport layer (ETL) and...
Article
The diverse and tunable surface and bulk chemistry of MXenes affords valuable and distinctive properties, which can be useful across many components of energy storage devices. MXenes offer diverse functions in batteries and supercapacitors, including double-layer and redox-type ion storage, ion transfer regulation, steric hindrance, ion redistribut...
Article
Full-text available
Synaptic devices with linear high‐speed switching can accelerate learning in artificial neural networks (ANNs) embodied in hardware. Conventional resistive memories however suffer from high write noise and asymmetric conductance tuning, preventing parallel programming of ANN arrays. Electrochemical random‐access memories (ECRAMs), where resistive s...
Article
Analog Resistive Memories In article number 2109970, Armantas Melianas, Armin VahidMohammadi, Alberto Salleo, Mahiar Max Hamedi, and co‐workers present the world's first electrochemical transistor memory based on 2D materials (MXene). These transistors can be used for neuromorphic computers, where they are a thousand times faster than previous ioni...
Article
The capacitance of the electrochemical interface has traditionally been separated into two distinct types: non-Faradaic electric double-layer capacitance, which involves charge induction, and Faradaic pseudocapacitance, which involves charge transfer. However, the electrochemical interface in most energy technologies is not planar but involves poro...
Article
In a recent work in Science, Cheng’s group at Beihang University demonstrated strong and tough MXene films with excellent conductivity, environmental stability, and electromagnetic interference shielding. Sequential bridging of 2D MXene sheets with sodium carboxymethyl cellulose and borate ions produced multifunctional composites.
Article
Delamination of two-dimensional materials is a requisite step for exploiting their unique properties. Herein, we report on the formation of stable colloidal solutions of Ti3C2 and Mo2Ti2C3 MXene nanosheets by the dispersion and electrostatic exfoliation of stacked multilayer MXenes in the presence of albumin. Delamination of multilayered MXenes int...
Article
In a recent work in Nature Nanotechnology, an international team of scientists offers a strategy for generating rapid ion transport channels in thick but dense films made of 2D flakes of metallic MoS2 quantum sheets. The narrow channels were sub-1.2 nm in width, but very short (∼6 nm) and allowed fast transport of ions, resulting in high volumetric...
Article
MXenes are an emergent class of two-dimensional materials with a very wide spectrum of promising applications. The synthesis of multiple MXenes, specifically solid-solution MXenes, allows fine tuning of their properties, expands their range of applications, and leads to enhanced performance. The functionality of solid-solution MXenes is closely rel...
Article
Reversible electrochemical intercalation of cations into the interlayer space of 2D materials induces tunable physical and chemical properties in them. In MXenes, a large class of recently developed 2D carbides and nitrides, low intercalation energy, high storage capacitance, and reversible intercalation of various cations have led to their improve...
Article
Full-text available
MXenes are a large class of 2D materials that consist of few‐atoms‐thick layers of transition metal carbides, nitrides, or carbonitrides. The surface functionalization of MXenes has immense implications for their physical, chemical, and electronic properties. However, solution‐phase surface functionalization often leads to structural degradation of...
Article
By using a battery of experimental and theoretical methods, it is shown that ion intercalation into the electrode material birnessite is mediated by structural water.
Article
Achieving pseudocapacitive intercalation in MXenes with neutral aqueous electrolytes and driving reversible redox reactions is scientifically appealing and practically useful. Here, we report that the partial oxidation of MXene intensifies pseudocapacitive Li+ intercalation into Ti3C2Tx MXene from neutral water-in-salt electrolytes. An in situ X-ra...
Article
Full-text available
Since their discovery in 2011, the number of 2D transition metal carbides and nitrides (MXenes) has steadily increased. Currently more than 40 MXene compositions exist. The ultimate number is far greater and in time they may develop into the largest family of 2D materials known. MXenes’ unique properties, such as their metal‐like electrical conduct...
Article
Full-text available
MXenes In article number 2103393, Michael Naguib, Michel W. Barsoum, and Yury Gogotsi present a brief historical overview of the first 10 years of MXene research and a perspective on their synthesis and future development. The cover shows a colored SEM image of a multilayer Ti3C2 MXene particle with an accordion-like morphology, which is produced b...
Article
Full-text available
Soft bioelectronic interfaces for mapping and modulating excitable networks at high resolution and at large scale can enable paradigm-shifting diagnostics, monitoring, and treatment strategies. Yet, current technologies largely rely on materials and fabrication schemes that are expensive, do not scale, and critically limit the maximum attainable re...
Preprint
Full-text available
Neural networks are one of the first major milestones in developing artificial intelligence systems. The utilisation of integrated photonics in neural networks offers a promising alternative approach to microelectronic and hybrid optical-electronic implementations due to improvements in computational speed and low energy consumption in machine-lear...
Article
The development of high capacitance materials with high packing density and low viscosity in suspension electrodes is critical for progressing towards high-efficiency, low-footprint electrochemical flow capacitors (EFCs). Here, we report on the first electrochemical and rheological characterization of MXene-based suspension electrodes, using multil...
Article
MXenes are a large family of two-dimensional materials that are attractive for energy storage due to their high-rate charging capabilities as well as for electrochemical actuators, water purification, and many other technologies. Ion intercalation during electrochemically driven charge and discharge processes is the fundamental process associated w...
Article
Understanding cellular electrical communications in both health and disease necessitates precise subcellular electrophysiological modulation. Nanomaterial-assisted photothermal stimulation was demonstrated to modulate cellular activity with high spatiotemporal resolution. Ideal candidates for such an application are expected to have high absorbance...
Article
Identifying and understanding charge storage mechanisms is important for advancing energy storage. Well-separated peaks in cyclic voltammograms (CVs) are considered key indicators of diffusion-controlled electrochemical processes with distinct Faradaic charge transfer. Herein, we report on an electrochemical system with separated CV peaks, accompan...
Article
Pseudocapacitive materials offer high charge storage capacities at high rates with charging time scales of tens of seconds to a few minutes. Voltammetry methods are extensively employed in understanding complex charge storage processes in pseudocapacitive materials. In this study, three-dimensional (3D) Bode analysis is employed in investigating ch...
Preprint
Full-text available
Identifying and understanding charge storage mechanisms is important for advancing energy storage, especially when new materials and electrolytes are explored. Well-separated peaks in cyclic voltammograms (CVs) are considered key indicators of diffusion-controlled electrochemical processes with distinct Faradic charge transfer. Herein, we report on...
Preprint
Identifying and understanding charge storage mechanisms is important for advancing energy storage, especially when new materials and electrolytes are explored. Well-separated peaks in cyclic voltammograms (CVs) are considered key indicators of diffusion-controlled electrochemical processes with distinct Faradic charge transfer. Herein, we report on...
Article
MXenes are promising pseudocapacitive materials with ultrahigh specific capacitance. Currently, more than 30 stoichiometric MXene compositions and about 20 solid solutions have been experimentally synthesized. However, most studies focus on Ti3C2Tx or a few other single-M MXenes, and little is known about the electrochemical properties of solid-sol...
Article
A decade after the first report, the family of two-dimensional (2D) carbides and nitrides (MXenes) includes structures with three, five, seven, or nine layers of atoms in an ordered or solid solution form. Dozens of MXene compositions have been produced, resulting in MXenes with mixed surface terminations. MXenes have shown useful and tunable elect...
Article
Full-text available
The propensity of Li to form irregular and nonplanar electrodeposits has become a fundamental barrier for fabricating Li metal batteries. Here, a planar, dendrite‐free Li metal growth on 2D Ti3C2Tx MXene is reported. Ab initio calculations suggest that Li forms a hexagonal close‐packed (hcp) layer on the surface of Ti3C2Tx via ionic bonding and the...
Article
Two-dimensional transition metal carbides, carbonitrides, and nitrides, called MXenes, exhibit high metallic conductivity, ion intercalation capability, and reversible redox activity, prompting their applications in energy storage and conversion, electromagnetic interference (EMI) shielding, and electronics, among many other fields. It has been sho...
Article
MXenes occupy a leading position among materials capable of providing lightweight shielding against electromagnetic interference (EMI) owing to their outstanding metallic conductivity, low density, tunable surface chemistry, and easy solution processing. In this work, we demonstrate that multiple interfaces of segregated structures in MXene composi...
Article
MXenes have shown record-breaking redox capacitance in aqueous electrolytes, but in a limited voltage window due to oxidation under anodic potential and hydrogen evolution under high cathodic potential. Coupling Ti3C2Tx MXene negative electrode with RuO2 or carbon-based positive electrodes expanded the voltage window in sulfuric acid electrolyte to...
Preprint
Full-text available
Low and selective infrared emission materials are necessary for next generation thermal technologies, including passive heating, infrared identification, and photothermal conversion. Here, we report on the intrinsic infrared radiation properties of three MXenes: Ti3C2Tx, Ti3CNTx, and V4C3Tx. The infrared emissivity of 200 nm thick Ti3C2Tx coating i...
Article
One of the primary factors limiting further research and commercial use of the two-dimensional (2D) titanium carbide MXene Ti3C2, as well as MXenes in general, is the rate at which freshly made samples oxidize and degrade when stored as aqueous suspensions. Here, we show that including excess aluminum during synthesis of the Ti3AlC2 MAX phase precu...
Preprint
Full-text available
Synaptic devices with linear high-speed switching can accelerate learning in artificial neural networks (ANNs) embodied in hardware. Conventional resistive memories however suffer from high write noise and asymmetric conductance tuning, preventing parallel programming of ANN arrays as needed to surpass conventional computing efficiency. Electrochem...
Article
Decreasing the size of portable, wearable, and integrated electronics requires subsequent reduction in the accompanying energy storage devices. To further decrease the size of supercapacitors without compromising device performance, adequate materials are required as well as appropriate device design. Traditionally, carbon nanomaterials have been u...
Article
High throughput manufacturing of regenerable nanomaterial-based flexible electronics represents an extreme challenge. Here we demonstrate a rapid and eco-friendly assembly and regeneration of nanomaterial networks (films) on a hydrophobic polymer substrate (i.e., polydimethylsiloxane) from a sonicated dispersion of hydrophobic nanoparticles in wate...
Preprint
Full-text available
Soft bioelectronic interfaces for mapping and modulating excitable networks at high resolution and at large scale can enable paradigm-shifting diagnostics, monitoring, and treatment strategies. Yet, current technologies largely rely on materials and fabrication schemes that are expensive, do not scale, and critically limit the maximum attainable re...
Article
As the scaling down of integrated circuits continues, there is a growing interest in electrically conductive materials with high current-carrying capacity for next-generation on-chip interconnects. Here, we report very high breakdown current density in Ti 3C 2T x MXene, an emerging two-dimensional material. We performed electrical measurements of i...
Article
Two-dimensional transition metal carbides/carbonitrides known as MXenes are rapidly growing as multimodal nanoplatforms in biomedicine. Here, taking SARS-CoV-2 as a model, we explored the antiviral properties and immune-profile of a large panel of four highly stable and well-characterized MXenes - Ti3C2Tx, Ta4C3T x , Mo2Ti2C3T x and Nb4C3T x . T...
Article
The unique properties of MXenes that arise from terminated functional groups and oxidization of MXenes make them attractive for application in photovoltaic devices like perovskite solar cells (PSCs). Here, oxidation of Ti3C2Tx hydrocolloid was carried out to tune its properties desirable for an electron transport layer (ETL) in low-temperature proc...
Technical Report
Isotopes like these are extremely valuable for a wide variety of applications like medical imaging and radiopharmaceuticals. This is the case with 18O, which makes up only 0.2 percent of the oxygen on earth. But generating pure 18O is very expensive, driving up the costs of medical applications. New research reported in Nature Communications intro...
Article
Full-text available
Isotopes of heavier gases including carbon (13C/14C), nitrogen (13N), and oxygen (18O) are highly important because they can be substituted for naturally occurring atoms without significantly perturbing the biochemical properties of the radiolabelled parent molecules. These labelled molecules are employed in clinical radiopharmaceuticals, in studie...
Article
Control of surface functionalization of MXenes holds great potential, and in particular, may lead to tuning of magnetic and electronic order in the recently reported magnetic Cr2TiC2Tx. Here, vacuum annealing experiments of Cr2TiC2Tx are reported with in situ electron energy loss spectroscopy and novel in situ Cr K‐edge extended energy loss fine st...
Article
The effective control of microbial and metabolically derived biological toxins which negatively impact physical health remains a key challenge for the 21st century. 2-dimensional graphene and MXene nanomaterials are relatively new additions to the field of biomedical materials with superior external surface areas suited to adsorptive remediation of...
Article
Full-text available
Highly integrated, flexible, and ultrathin wireless communication components are in significant demand due to the explosive growth of portable and wearable electronic devices in the fifth‐generation (5G) network era, but only conventional metals meet the requirements for emerging radio‐frequency (RF) devices so far. Here, it is reported on Ti3C2Tx...
Preprint
Full-text available
Control of surface functionalization of MXenes holds great potential, and in particular, may lead to tuning of magnetic and electronic order in the recently reported magnetic Cr2TiC2Tx. Here, vacuum annealing experiments of Cr2TiC2Tx are reported with in situ electron energy loss spectroscopy and novel in situ Cr K-edge extended energy loss fine st...
Article
Nano-hydroelectric technology utilizes hydraulic flow through electronically conducting nanomaterials to generate electricity in a simple, renewable, ubiquitous, and environmentally friendly manner. Up to date, several designs of nano-hydroelectric devices have...