2D Materials: Preparation, Properties, Modeling & Applications: Energy Related Applications
Sponsored by: TMS Functional Materials Division, TMS: Thin Films and Interfaces Committee
Program Organizers: Nuggehalli Ravindra, New Jersey Institute of Technology; Madan Dubey, US Army Research Laboratory; Sufian Abedrabbo, Khalifa University; Hesam Askari, University Of Rochester; Gerald Ferblantier, University of Strasbourg - IUT LP / ICube Laboratory - CNRS; Ramana Chintalapalle, University of Texas at El Paso; Joshua Young, New Jersey Institute of Technology; Adele Carrado, University of Strasbourg; Karine Mougin, Cnrs, Is2m; Heinz Palkowski, Clausthal University of Technology
Wednesday 2:00 PM
March 22, 2023
Room: Aqua AB
Location: Hilton
Session Chair: Hesam Askari, University of Rochester; Madan Dubey, Army Research Laboratory, Sensors and Electron Devices Directorate
2:00 PM Introductory Comments
2:05 PM Invited
Application of Phase Change Materials in the Thermal Management of a LiFePO4 Battery Pack in a Cold Temperatures Environment: Seyed Mojtaba Sadrameli1; Yazdan Azizi2; 1GUTech; 2TMU
The performance and life cycle of lithium-ion batteries are seriously affected by their surface temperatures during charging and discharging processes when a large amount of heat is continuously produced inside the cells causing surface temperature enhancement. One of the applications of phase change materials is to control the surface temperature of thermal processes. These materials absorb extra heat during the charging and discharging process (melting) and release into the environment once the system is turned off (solidification).A composite of a phase change material and aluminum wire mesh plates has been used for the thermal management of a LiFePO4 battery pack in cold temperature environments. Aluminum wire mesh plates have been applied to the PCM for thermal conductivity enhancement and to improve the system's temperature uniformity. Preliminary experimental runs have been performed on the charge and discharge of the batteries at different rates of 1–3 C to obtain the maximum surface temperature of the cells. Due to the page limit of the manuscript, only the discharge results are presented here. The results show that using the PCM and aluminum wire mesh plates between the cells can reduce the surface temperature significantly and causes better performance for the battery pack.
2:30 PM Invited
Bulk Heterojunction Organic Photovoltaic Devices Produced Using Liquid Crystalline Semiconducting Polymer Gel Materials: John Magno1; 1Magno Fibers LLC
Bulk heterojunction organic photovoltaic devices may be produced via a process that involves solvent casting or printing liquid crystalline monomeric materials onto a substrate and then photocrosslinking them. The materials may be photopatterned during crosslinking. The fabrication process involves coating and crosslinbking a liquid crystalline polymer/solvent gel, removing the liquid crystalline solvent to form an aerogel, and then intercalating a second organic semiconductor material into the air-filled voids in the aerogel. In one material combination the liquid crystalline polymer is electron donating and the intercalated material is electron accepting. Liquid crystalline semiconductor materials have multiple advantages over equivalent amorphous organic semiconductors such as higher mobilities and the ability to easily mix multiple semiconducting materials with varying spectral light absorption bands. Current highest performance organic photovoltaic materials may be adapted for use in these devices.
2:55 PM Invited
Spectroscopic Studies on Sulfides and Selenides of Mo and W for Photoabsorbers: Anupama Kaul1; 1University of North Texas
The excitonic and multibody interactions in some semiconducting two-dimensional (2D) crystallites, their strain-dependent properties and pristine atomically flat interfaces, coupled with the ability to solution-process these materials, offer a rich playground to unveil fundamental physical mechanisms for exciting and innovative devices. Amongst these, the transition metal dichalcogenides (TMDCs), such as tungsten diselenide (WSe2) and niobium diselenide (NbSe2) are finding promise in nanoelectronics, optoelectronics, sensors and quantum photonics. In this work, we have analysed the light-matter interactions in superconducting NbSe2 and semiconducting WSe2 toward sensing devices enabled by quantum phenomena. Moreover, solution-processed 2D materials, including lower dimensionality perovskites, have provided a pathway to realize a rich plethora of flexible and bendable sensing devices which will also be discussed.
3:20 PM Break
3:35 PM Invited
Super-capacitor Based on Hybrid Architecture with 2D Materials: Daniel Choi1; 1Khalifa University of Science and Technology
Electrochemical supercapacitors (SCS) show high energy density and very long cyclibility due to high power density. However, the key challenge for further enhanced capacitance of SCS lies in fabricating stable structure which can provide large chemically active surface are of materials for SCS. Two-dimensional (2D) layers in such hybrid structure may come into contact unavoidably, which may lead to ‘aggregation’. We are developing processes for fabrication of hybrid architecture with 2D materials (such as graphene)-based nanocomposite structures for application of novel SCS. Graphene-carbon nanotubes (CNT) nanocomposite hybrid structures are novel materials for SCS which possess: (1) large chemically active surface area for large capacitance; (2) high electrical conductivity in all directions; (3) enabling novel thermal management; and (4) realizing enhanced mechanical and chemical stability of devices. As preliminary results, the average measure capacitance of the hybrid graphene-CNT composite structure was 725µF/cm2 at 10mV/s with a standard rectangular voltammetry curve.
4:00 PM Invited
Electromechanical Coupling of 2D Materials for Energy and Sensing Applications: Jun Liu1; 1University at Buffalo, The State University of New York
Van der Waals heterojunctions consisting of atomically thin 2D materials are promising for future electronic and optoelectronic applications due to their unique and tunable electrical and photoelectrical properties. Particularly, the coupling between the mechanical modulation and electronic and photonic properties of 2D materials is of great interest. By introducing local strain gradient to non-centrosymmetric 2D materials, induced polarization due to lattice asymmetry can give rise to enhanced photocurrent transport known as flexo-photovoltaic effect. Unlike conventional piezoelectricity or triboelectricity with AC output, electronic excitation of electron-hole pairs at a Schottky or P-N sliding contact results in a direct-current generation with 3-4 orders higher current density, which can also couple with photon irradiation manifesting as tribo-photovoltaic effect. In this talk, electromechanical coupling of 2D materials for energy harvesting and sensing application will be discussed.
4:25 PM
Phase-aligned Growth of Nickel Phosphosulfide Nanostructured Arrays: A Promising Electrocatalyst for Efficient Hydrogen Evolution Reaction: Navid Attarzadeh1; Debabrata Das1; Balwant K Singh1; Susheng Tan2; CV Ramana1; 1University of Texas at El Paso; 2University of Pittsburgh
The design and development of cost-efficient electrocatalysts with high durability and high catalytic activity for electrolyzing water to produce hydrogen is desirable to meet the ever-increasing demand for energy. Herein, we report the preparation and assessment of high-performance hydrogen evolution reaction (HER) electrocatalysts based on the sulfidation of nickel phosphide nanostructures. The ternary nanostructure of nickel phosphosulfide exhibits a remarkable performance compared to nickel phosphide catalysts. The prepared catalysts demonstrate notably low overpotentials compared to the current commercial Pt group catalysts, while the stability and durability in acidic solutions are significant. The results confirm that the synergic presence of S and P can optimize the electronic properties and yield nanostructures with highly intrinsic catalytic activities. It is realized that implementing the sulfidation process not only boosts the durability by increasing the oxidation resistivity but also increases the exchangeability of protons at active sites. The results will be presented and discussed.