Joseph Halim
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View article: Sulfur-Functionalized MXenes Nanosheets for Efficient Electrocatalytic Hydrogen Evolution
Sulfur-Functionalized MXenes Nanosheets for Efficient Electrocatalytic Hydrogen Evolution Open
Two-dimensional MXenes are emerging as promising materials for electrocatalysts owing to their layered structure, metallic conductivity, and abundant catalytically active basal planes. However, achieving coordinated regulation of both reac…
View article: Defect Engineering of Mo<sub>2–<i>x</i></sub>CT<sub><i>z</i></sub> MXenes through Precursor Alloying and Effects on Electrochemical Properties
Defect Engineering of Mo<sub>2–<i>x</i></sub>CT<sub><i>z</i></sub> MXenes through Precursor Alloying and Effects on Electrochemical Properties Open
Defect engineering in the form of the intentional creation of defects has been shown to enhance the properties of two-dimensional materials in various applications. Herein, we systematically explore a simple and reproducible method for int…
View article: Defect engineering and effect of vacancy concentration on the electrochemical performance of V-based MXenes
Defect engineering and effect of vacancy concentration on the electrochemical performance of V-based MXenes Open
Vacancies play a pivotal role in determining the physical and chemical properties of materials. Introducing vacancies into two-dimensional (2D) materials offers a promising strategy for developing high-performance electrode materials for e…
View article: Developing Energy Harvesting Tiles from Footsteps with Battery Management System and Monitoring Application
Developing Energy Harvesting Tiles from Footsteps with Battery Management System and Monitoring Application Open
Renewable energy is energy that will not run out along with its use and the energy can be directly used or stored in an energy storage system. If the pressure from footsteps can be converted into electrical energy, this energy can be obtai…
View article: A Hyperstable Aqueous Zinc‐Ion Battery Based on Mo<sub>1.74</sub>CT<sub>z</sub> MXene
A Hyperstable Aqueous Zinc‐Ion Battery Based on Mo<sub>1.74</sub>CT<sub>z</sub> MXene Open
The sustainable utilization of natural resources and growing demand for various electronic devices have promoted the development of safe, stable, and rechargeable aqueous zinc‐ion batteries (AZIBs). However, a stable cathode material is cr…
View article: Bidirectional Mo<sub>4/3</sub>CT<sub><i>x</i></sub> MXene/Graphene Aerogels for Tailored Microwave Absorption
Bidirectional Mo<sub>4/3</sub>CT<sub><i>x</i></sub> MXene/Graphene Aerogels for Tailored Microwave Absorption Open
Microwave absorbing materials (MAMs) play critical roles in electromagnetic interference (EMI) shielding, stealth technology, and wireless communication systems. This study introduces a bidirectionally grown hybrid aerogel microwave absorb…
View article: Creep Rupture and Thermal Shock Failures of Nickel-based Alloy Reformer Tubes: A Comparative Analysis
Creep Rupture and Thermal Shock Failures of Nickel-based Alloy Reformer Tubes: A Comparative Analysis Open
This paper examines the failures of radiant tubes within a fertilizer plant's steam reforming unit between the creep rupture and thermal shock, encompassing discussions on the characteristics of the failures, microstructural analysis of th…
View article: Defect Engineering: Synthesis and Electrochemical Properties of Two‐Dimensional Mo<sub>1.74</sub>CT<sub><i>z</i></sub> MXene
Defect Engineering: Synthesis and Electrochemical Properties of Two‐Dimensional Mo<sub>1.74</sub>CT<sub><i>z</i></sub> MXene Open
The creation of vacancies and/or pores into two‐dimensional materials, like graphene and MXenes, has shown to increase their performance for sustainable applications. However, a simple and affordable method with controlled and tailorable v…
View article: Computationally Driven Discovery of Quaternary Tantalum-Based MAB-Phases: Ta<sub>4</sub>M″SiB<sub>2</sub> (M″ = V, Cr, or Mo): Synthesis, Characterization, and Elastic Properties
Computationally Driven Discovery of Quaternary Tantalum-Based MAB-Phases: Ta<sub>4</sub>M″SiB<sub>2</sub> (M″ = V, Cr, or Mo): Synthesis, Characterization, and Elastic Properties Open
Out-of-plane chemically ordered transitionmetal boride(o-MAB) phases, Ta4M & DPRIME;SiB2 (M & DPRIME; = V, Cr), and a structurally equivalent disordered solidsolution MAB phase, Ta4MoSiB2, are synthesized.DFT calculations are used …
View article: Synthesis, Characterization, and Modeling of a Chemically Ordered Quaternary Boride, Mo<sub>4</sub>MnSiB<sub>2</sub>
Synthesis, Characterization, and Modeling of a Chemically Ordered Quaternary Boride, Mo<sub>4</sub>MnSiB<sub>2</sub> Open
The recent discovery of chemical ordering in quaternary borides offers new ways of exploring properties and functionalities of these laminated phases. Here, we have synthesized and investigated chemical ordering of the laminated Mo4MnSiB2 …
View article: Experimental and Theoretical Investigations of Out-of-Plane Ordered Nanolaminate Transition Metal Borides: M<sub>4</sub>CrSiB<sub>2</sub> (M = Mo, W, Nb)
Experimental and Theoretical Investigations of Out-of-Plane Ordered Nanolaminate Transition Metal Borides: M<sub>4</sub>CrSiB<sub>2</sub> (M = Mo, W, Nb) Open
We report the synthesis of three out-of-plane chemically ordered quaternary transition metal borides (o-MAB phases) of the chemical formula M4CrSiB2 (M = Mo, W, Nb). The addition of these phases to the recently discovered o-MAB phase Ti4Mo…
View article: Predicting chemical exfoliation: fundamental insights into the synthesis of MXenes
Predicting chemical exfoliation: fundamental insights into the synthesis of MXenes Open
The factors controlling the top-down synthesis of MXenes, by selectively removing the A elements from parent MAX phases, is still under debate. In particular, understanding why some MAX phases can be used for creating MXenes, while others …
View article: A Highly Reversible Aqueous Ammonium‐Ion Battery based on α‐MoO<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub><i>z</i></sub> Anodes and (NH<sub>4</sub>)<sub><i>x</i></sub>MnO<sub>2</sub>/CNTs Cathodes
A Highly Reversible Aqueous Ammonium‐Ion Battery based on α‐MoO<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub><i>z</i></sub> Anodes and (NH<sub>4</sub>)<sub><i>x</i></sub>MnO<sub>2</sub>/CNTs Cathodes Open
Aqueous ammonium‐ion batteries (AAIBs) are appealing due to their relatively low cost and good rate performance. In general, AAIBs are environmentally friendlier than their non‐aqueous counterparts. However, it is still a challenge to achi…
View article: On the Use of Ti<sub>3</sub>C<sub>2</sub><i>T</i><sub><i>x</i></sub> MXene as a Negative Electrode Material for Lithium-Ion Batteries
On the Use of Ti<sub>3</sub>C<sub>2</sub><i>T</i><sub><i>x</i></sub> MXene as a Negative Electrode Material for Lithium-Ion Batteries Open
The pursuit of new and better battery materials has given rise to numerous studies of the possibilities to use two-dimensional negative electrode materials, such as MXenes, in lithium-ion batteries. Nevertheless, both the origin of the cap…
View article: MXene//MnO<sub>2</sub> Asymmetric Supercapacitors with High Voltages and High Energy Densities
MXene//MnO<sub>2</sub> Asymmetric Supercapacitors with High Voltages and High Energy Densities Open
Aqueous asymmetric supercapacitors (AASCs) can have high voltages and high energy densities. However, the rational design of AASCs with proper negative and positive electrodes remains a challenge. Herein, we report on an AASC using Mo 1.33…
View article: Exploring the electrochemical behavior of Mo1.33CTz MXene in aqueous sulfates electrolytes: Effect of intercalating cations on the stored charge
Exploring the electrochemical behavior of Mo1.33CTz MXene in aqueous sulfates electrolytes: Effect of intercalating cations on the stored charge Open
MXenes have been introduced as a high energy and power density electrochemical supercapacitor material owing to their high specific capacitance and electrochemical stability. The operating potential window and, in turn, energy density of M…
View article: High-Entropy Laminate Metal Carbide (MAX Phase) and Its Two-Dimensional Derivative MXene
High-Entropy Laminate Metal Carbide (MAX Phase) and Its Two-Dimensional Derivative MXene Open
High-entropy (HE) ceramics, by analogy with HE metallic alloys, are an emerging family of multielemental solid solutions. These materials offer a large compositional space, with a corresponding large range of properties. Here, we report th…
View article: MXene-based symmetric supercapacitors with high voltage and high energy density
MXene-based symmetric supercapacitors with high voltage and high energy density Open
MXene-based aqueous symmetric supercapacitors (SSCs) are attractive due to their good rate performances and green nature. However, it remains a challenge to reach voltages much over 1.2 V, which significantly diminishes their energy densit…
View article: Investigation of 2D Boridene from First Principles and Experiments
Investigation of 2D Boridene from First Principles and Experiments Open
Recently, a 2D metal boride – boridene – has been experimentally realized in the form of single‐layer molybdenum boride sheets with ordered metal vacancies, through selective etching of the nanolaminated 3D parent borides (Mo 2/3 Y 1/3 ) 2…
View article: Source Data.xlsx
Source Data.xlsx Open
Data for the figures in the article "Recovery of Oxidized Two-Dimensional MXenes Through High Frequency Nanoscale Electromechanical Vibration" and its supplementary information.
View article: Colorless-to-colorful switching of electrochromic MXene by reversible ion insertion
Colorless-to-colorful switching of electrochromic MXene by reversible ion insertion Open
Electrochromic (EC) materials that change color with voltage have been widely studied for use in dynamic windows. However, colorless-to-colorful switching with high contrast ratio is generically unattainable, especially for colorless-to-bl…
View article: Aqueous Electrolytes, MXene‐Based Supercapacitors and Their Self‐Discharge
Aqueous Electrolytes, MXene‐Based Supercapacitors and Their Self‐Discharge Open
Significant efforts have been dedicated to developing Ti 3 C 2 T z ‐based MXene aqueous supercapacitors (SCs) with improved energy and power densities. Notably less research has been devoted to an equally important characteristic of aqueou…
View article: Out‐Of‐Plane Ordered Laminate Borides and Their 2D Ti‐Based Derivative from Chemical Exfoliation
Out‐Of‐Plane Ordered Laminate Borides and Their 2D Ti‐Based Derivative from Chemical Exfoliation Open
Exploratory theoretical predictions in uncharted structural and compositional space are integral to materials discoveries. Inspired by M 5 SiB 2 (T2) phases, the finding of a family of laminated quaternary metal borides, M ′ 4 M ″SiB 2 , w…
View article: Acoustomicrofluidic Synthesis of Pristine Ultrathin Ti<sub>3</sub>C<sub>2</sub>T<sub><i>z</i></sub> MXene Nanosheets and Quantum Dots
Acoustomicrofluidic Synthesis of Pristine Ultrathin Ti<sub>3</sub>C<sub>2</sub>T<sub><i>z</i></sub> MXene Nanosheets and Quantum Dots Open
The conversion of layered transition metal carbides and/or nitrides (MXenes) into zero-dimensional structures with thicknesses and lateral dimensions of a few nanometers allows these recently discovered materials with exceptional electroni…
View article: Mixed MXenes: Mo1.33CTz and Ti3C2Tz freestanding composite films for energy storage
Mixed MXenes: Mo1.33CTz and Ti3C2Tz freestanding composite films for energy storage Open
MXenes are a class of 2D materials with outstanding properties, including high electronic conductivity, hydrophilicity, and high specific capacitance. In particular, Mo1.33CTz MXene has a high specific capacitance, whereas films of Ti3C2Tz…