ACerS Richard M. Fulrath Award Session: Session II
Sponsored by: ACerS
Program Organizers: MS&T Administration, MS&T PCC
Tuesday 9:00 AM
October 11, 2022
Room: 407
Location: David L. Lawrence Convention Center
Session Chair: Junichi Tatami, Yokohama National University; Michael Halbig, NASA Glenn Research Center
9:00 AM Invited
Fabrication and Morphology Control of Advanced Glass-Ceramics for Next-generation All-Solid-State Batteries: Tsuyoshi Honma1; 1Nagaoka University of Technology in Niigata
The glassy state is thermodynamically non-equilibrium and exhibits softening, viscous flow, and crystallization upon reheating. Glass-ceramics are hybrid ceramics that combine the glassy phases with isotropic physical properties with the crystalline phases that exhibit unique properties. The morphology of glass-ceramics can be controlled from nanometer to micrometer range depends on the thermal history (by an electric furnace or laser irradiation). We will talk about our recent progress on phosphate glass-ceramics for sodium-ion-batteries and all-solid-state batteries. Sodium iron phosphate (Na2FeP2O7) was found to be in a glassy state by a conventional melting method, and the crystals formed by recrystallization served as the active cathode material for sodium-ion batteries. The cathode glass-ceramics successfully adhered to a solid electrolyte using a supercooled state above the glass transition temperature. Adhesion of the glass to the solid electrolyte can be effectively achieved by heat treatment in an electric furnace and by local heating by laser irradiation.
9:40 AM Invited
Development of New Process for Mass-producing Nanoparticles and Industrialization of Quantum Dots Materials for Display: Hirokazu Sasaki1; 1Shoei Chemical Inc.
Dry processes such as CVD process, Spray pyrolysis process and PVD process have been developed for mass-production of Ni nanopowders applied to the internal electrode of MLCC at high production rate and low cost. However, the range of particle sizes that dry process can mass-produce is more than 50 nm, so that a development of new process for mass-production of 1-50 nm size nanoparticles are required. Thereby, we have invented a unique method named Flow Cell Reactor (FCR) to synthesize 1-50 nm nanoparticles at low cost with high productivity. In this study, various developments have been conducted to improve size distribution of InP-based QD such as modifying process conditions and optimizing raw material condition with FCR systems. We have successfully achieved InP which has very narrow size distribution and shows narrowest spectrum in the world. This FCR system can be applied also to mass-production of Ni nanopowders for the future generation of MLCC.
10:00 AM Invited
Displays Having FETs with Crystalline Oxide Semiconductor Materials: Kenichi Okazaki1; 1Semiconductor Energy Laboratory Co., Ltd. (SEL)
There is currently a high demand for materials and manufacturing technology which realize high-definition, low-cost, energy-saving displays. Since the 2000s, there has been a shift towards oxide semiconductors as materials for displays’ field-effect transistors (FETs) from conventional silicon-based materials.Leading manufacturers have successfully entered volume production with display FETs fabricated with crystalline oxide semiconductor materials. The materials were discovered by Semiconductor Energy Laboratory Co., Ltd., and using the materials for FETs enables high-definition displays in a variety of form factors. More and more OLED display products carry this technology, and further proliferation is expected. In my presentation, I will introduce the fundamental properties and FET characteristics of crystalline oxide semiconductor materials and report examples of its real-world application.
10:20 AM Break
10:40 AM Invited
Design Paradigm for Sustainable Manufacturing of Ceramics by Analyzing Different Case Studies: Surojit Gupta1; 1University of North Dakota
There is an urgent need for manufacturing advanced materials for biomedical, structural and functional applications. Traditionally, ceramics manufacturing is energy intensive. Smart design paradigm is needed to reduce or mitigate the Carbon footprint. In this presentation, I will present some of the recent development in greening of manufacturing via case studies developed in my research group. Different types of approach will be discussed for greening the ceramics manufacturing from entrepreneurship perspective. A comparison of different types of manufacturing technologies will be presented. It is expected that these novel technologies can be commercialized for further development.