12th International Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing: Sustainable Manufacturing of Ceramics I
Sponsored by: ACerS Engineering Ceramics Division
Program Organizers: Surojit Gupta, University of North Dakota; Rajiv Asthana, University of Wisconsin; Mritunjay Singh, Ohio Aerospace Institute; Tatsuki Ohji, AIST; Enrico Bernardo, University of Padova; Zhengyi Fu, Wuhan University of Technology; Hisayuki Suematsu, Nagaoka University of Technololgy; Tatami Junichi, Yokohama national university; Yiquan Wu, Alfred University; Allen Apblett, Oklahoma State University
Monday 8:00 AM
November 2, 2020
Room: Virtual Meeting Room 20
Location: MS&T Virtual
Session Chair: Manabu Fukushima, AIST; Bai Cui, UNL; Lan Li, Boise State University
8:00 AM
Introductory Comments: 12th International Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing: Surojit Gupta1; 1University of North Dakota
Introductory Comments
8:05 AM Invited
Manganese Dioxide Compounds for Carbon Capture and Storage: Lan Li1; 1Boise State University
Carbon capture and storage can effectively prevent the release of CO2 into atmosphere, causing air pollution and greenhouse effect. Developing the materials that can separate CO2 from power plant flue or product gases and store it securely is a primary task. Manganese dioxide octahedral molecular sieve (OMS) has demonstrated this potential application. It is comprised of the columns of edge-sharing of MnO6 octahedra with alternating 1 × 1 and m × n tunnels. First-principles density functional theory-based calculations have been applied to study the OMS materials. As the size of the OMS tunnel changes, comprehensive studies have been conducted to reveal its atomic structure, electronic and magnetic properties, and predict CO2 adsorption and diffusion mechanisms in comparison with experimental measurement.
8:45 AM Invited
Effects of Transition Metals and External Field on The Evolution of Polymer-Derived Si-O-C Ceramics: Kathy Lu1; Ni Yang1; Jiaqi Zheng1; 1Virginia Polytechnic Institute and State University
Polymer-derived ceramics (PDCs) represent a relatively new class of materials due to a series of advantages, such as chemical, thermal, and oxidation stability, over classical ceramics. In this study, iron-, cobalt-, and nickel-modified silicon oxycarbides (SiOC) are synthesized at different temperatures. The order of catalytic activity is iron > cobalt > nickel, in agreement with the activation energy calculation. The different phase compositions of the Fe-, Ni-, or Co-activated SiOC materials are rationalized by in-depth understanding of the phase composition and crystallization of the SiOC systems. Electrically conductive C-SiOC-SiC and C-SiC-TiC nanocomposites with a dense and homogenous structure can be obtained upon flash sintering under electric field, Joule heating and electromigration. Through proper precursor and additive selection, as well as thermodynamic and kinetic understanding, in-situ formation of C-SiOC-SiC and C-SiC-TiC nanocomposites is realized via phase separation and carbothermal reaction. High oxidation resistance and thus thermal stability are achieved.
9:25 AM Invited
Pressureless and Spark Plasma Sintering of Lunar Soil Simulants: Bai Cui1; Xiang Zhang1; Mahdieh Khedmati1; Yong-Rak Kim2; Hyu-Soung Shin3; Jangguen Lee3; Young-Jae Kim3; 1University of Nebraska-Lincoln; 2Texas A&M University; 3Korea Institute of Civil Engineering and Building Technology
Densification of lunar soils is considered a core mission to produce various kinds of infrastructure materials that can build structural components on the moon surface. The purpose of this study is to investigate the feasibility of the spark plasma sintering (SPS) process for proper densification of lunar soils, which is compared with pressureless sintering. The effect of SPS conditions, such as temperature and pressure, on the densification behavior, phase transformation, microstructural evolution, and mechanical properties of lunar soil simulants have been examined by conducting the X-ray diffraction test, electron microscopy imaging, and nano/micro indentation testing. The FJS-1 lunar soil simulant was composed of sodian anorthite, augite, pigeonite, and iron titanium oxide. These phases were transformed to sodian anorthite, glass, feather-shaped augite, and dendritic schorlomite at 1000 and 1050 oC during SPS. Mechanical properties of the local phases were represented by the contour maps of elastic modulus and nanohardness.
10:05 AM
Green Process for Recycling of Nickel Hydroxide from End of Life Batteries into Films and Membranes: Allen Apblett1; Dewan Rahman1; Audrey Vecoven1; 1Oklahoma State University
Nickel hydroxides have numerous applications including their use as battery electrodes. It has been found that nickel hydroxide is readily recovered from used nickel metal hydride (NIMH) batteries by extraction as a solution of hexamminenickel(II) hydroxide, [Ni(NH3)6](OH)2. If ammonia is allowed to evaporate from the solution, the dissolution process is reversed and crystalline films of beta-Ni(OH)2 are deposited that consist of closely-packed micron-sized clumps of thin plates. Such films are useful in their own right but can also be converted to nickel oxide by calcination with the advantage that the absence of thermally-stable anions (e.g. chloride, nitrate, or sulfate) allow complete conversion to occur at relatively low temperature. Thus, this solution growth process provides a green method for preparation of both beta-Ni(OH)2 and nickel oxide films. Addition of sodium aluminate to the solution makes it possible to also prepare alpha-nickel hydroxide.
10:45 AM
Thermal Insulators with Macroscopic and Microscopic Anisotropy Created by Gelation Freezing Method with Alumina Platelets and Nano-rods: Manabu Fukushima1; Yu-ichi Yoshizawa1; 1National Institute of Advanced Industrial Science and Technology (AIST)
Thermal insulators have been fabricated by freezing gelatin gels including calcined kaolin with various amounts of hexagonal alumina platelets or nano-rods, followed by sintering. Unidirectional macroscopic porosity by the freezing process could be created with accompanying pore walls composed of the platelet grains or nano-rods microscopically longitudinally oriented. The relationship among different contents of the platelets, microstructures, compressive strength and thermal conductivity was examined. Varying platelet or nano-rod contents in the initial gels were found to be effective for controlling porosity and properties in the resultant insulators. The overall morphology and properties of the insulators prepared by gelation-freezing were investigated.
10:25 AM Invited
Studies on Electrolyte, Anode and Cathode for Developing Safe Sodium-ion Battery Technology: Abhinav Tripathi1; Kang Du1; Markas Law1; Karthikeyan Kavitha1; Lihil Uthpala Subasinghe1; Palani Balaya1; 1National University of Singapore
For centuries, researchers have been trying to solve the energy issue for human civilization. With growing consideration on environmental problems, people are trying to harvest energy from alternative energy resources such as solar, wind and tide, where the energy storage system (ESS) becomes mandatory to address intermittency. Sodium-ion battery (NIB) can be one of the most promising candidates for ESS. In this presentation, a comprehensive study on electrolyte, anode and cathode for an industry-standard non-flammable NIB will be discussed. More specifically, investigations on thermal stability and related solid-electrolyte interphase (SEI) studies on three types of anode material, Na2Ti3O7/C, graphite, hard carbon (HC) and two types of cathode, modified Na3V2(PO4)3 (NVP) and O3-type and P3-type layered oxide will be discussed. We will also present performance of 18650-type commercial cells fabricated using modified NVP as cathode with HC as anode.