HOME > セミナー

第411回化学システム工学専攻公開セミナー An Integrated Science and Engineering Approach for Next-Generation Battery Materials and Technologies

5号館53号講義室 (BLdg. 5, Rm. 53)
講演題目An Integrated Science and Engineering Approach for Next-Generation Battery Materials and Technologies
講演者Dr. Jie Xiao
Battelle Fellow
PNNL-University of Washington distinguished faculty fellow
Pacific Northwest National Laboratory, Richland, WA99352 USA
概要 Electrochemical energy storage especially lithium-based battery technology enables electrification of the transportation sector and significantly improved stationary grid storage, hence is critical to developing clean-energy economy in the US. Today’s batteries are, however, mostly manufactured outside the US. Developing IP-retaining next-generation battery materials and technologies provides a unique opportunity to establish a strong domestic manufacturing footing. Identifying and addressing material challenges at industry-relevant scales and validation of new battery chemistries under realistic conditions critically determine the timeliness and success of materials development, manufacturing, and technology translation from academic research to industry applications. There remains to be a large gap between academic research, materials scale-up/manufacturing, and device level performance optimization. This talk will review the challenges, opportunities, and approaches for accelerating R&D and manufacturing processes of next generation materials and battery technologies. I will highlight the importance of interdisciplinary research in electrochemical energy storage and emphasize the necessity to identify and address scientific challenges at relevant scales/conditions. Two specific examples will be discussed: (1) an integrated electrochemistry and engineering approach to utilize lithium metal anode and enable high-energy rechargeable lithium metal battery, (2) the study of single crystal Ni-rich cathode for Li-ion and Li metal batteries. Scaling up single crystal cathode will be used as an example to shed some light on the importance of integrated science and engineering methodology for battery materials development and manufacturing.

第410回化学システム工学専攻公開セミナー Simulating multicellular evolution and growth by agent-based stochastic 3D computer models

5号館53号講義室 (Bldg. 5, Rm. 53)
講演題目Simulating multicellular evolution and growth by agent-based stochastic 3D computer models
講演者Prof. Fabrizio CLERI
IEMN, CNRS-University of Lille
(Institute of Electronics, Microelectronics and Nanotechnology)
(Laboratories for International Research on Multi-disciplinary Micro
I will present the mathematical foundations and some different variants of ”agent-based” models (ABM) that we developed in our research group in recent years. The ABM aims at assembling the most relevant biological features of a network of biological cells in a realistic computational platform. The main focus is the virtual modeling of the long-term evolution of cell proliferation under conditions of damage (and repair) to the DNA, as it could occur either because of intrinsic metabolic processes, (e.g. cell duplication stages, or stem-cell reprogramming), or following various types of external toxic chemicals or radiation. However, the computational platform is easily extended to different biological tissues or lab-on-chip artificial models.

Prof. Fabrizio CLERI is currently the Director of the Physics Division, at the CNRS Institute of Electronics and Nanotechnology (IEMN) in Lille, and Distinguished Professor at the Department of Physics, University of Lille. He obtained the title of Doctor in Physics cum laude from the University of Perugia (Italy) in 1984, and the Habilitation in Physics (HDR) from the University “Louis Pasteur” of Strasbourg in 2005. After his research at ENEA, Rome (Italy) and University of Chicago (USA), he moved to Lille and became a professor in the Physics department, where he created the Master School in Biophysics and Medical Physics (2010) for which I am still the acting Director. He was an Editor of “Applied Physics Letters” for 8 years (two terms) until March 2016; since 2012 he is on the editorial board of the European Physical Journal E: Soft Matter and Biological Physics, and in 2018 he also joined the team of Nanomaterials and Nanotechnology. He was a visiting professor at the Institute of Industrial Sciences of the Tokyo University, for several terms between 2007 and now.

第409回化学システム工学専攻公開セミナー 臓器培養への挑戦 ~工学と医学の立場から~

講演題目臓器培養への挑戦 ~工学と医学の立場から~
講演者堺 裕輔
(九州大学大学院工学研究院化学工学部門 准教授)
概要Tissue Engineering(再生医療)が提唱されて30年が経ち、多くの技術が臨床応用されてきた。一方、複雑多岐な構造や機能を持つ立体臓器の培養は発展途上である。本セミナーでは工学と医学の立場から、肝臓をメイントピックとして、細胞周囲微小環境設計による臓器培養と再生医療について説明する。足場やサイトカインといった細胞を制御する要素の供給アプローチや代謝産物を除去する戦略等に焦点を当てると共に、今後の挑戦についても紹介する。
世話人勝田 毅(酒井西川研究室)

第408回化学システム工学専攻公開セミナー 高性能ペロブスカイト太陽電池を先導する物性科学と材料工学

(東京大学大学院総合文化研究科広域科学専攻広域システム科学系 講師)

第407回化学システム工学専攻公開セミナー 相転移を利用した機能化学品設計

Science and Innovation Center

第406回化学システム工学専攻公開セミナー Liquid Sunlight®, Made from CO2

講演題目Liquid Sunlight®, Made from CO2
講演者Prof. Peidong Yang
Department of Chemistry
Department of Materials Science Engineering
University of California, Berkeley 94720
概要Liquid sunlight can be considered as a new form of chemical energy converted and stored in chemical bonds from solar energy. Efficient capture and storage of solar energy can provide unlimited renewable power sources and drive the capture and conversion of greenhouse gases such as CO2 into valuable chemicals. Solar-to-chemical production using a fully integrated system is an attractive goal, but to-date there has yet to be a system that can demonstrate the required efficiency, durability, or be manufactured at a reasonable cost. One can learn a great deal from the natural photosynthesis where the conversion of carbon dioxide and water to carbohydrates is routinely carried out at a highly coordinated system level. There are several key features worth mentioning in these systems: spatial and directional arrangement of the light-harvesting components, charge separation and transport, as well as the desired chemical conversion at catalytic sites in compartmentalized spaces. In order to design an efficient artificial photosynthetic materials system, at the level of the individual components: better catalysts need to be developed, new light-absorbing semiconductor materials will need to be discovered, architectures will need to be designed for effective capture and conversion of sunlight, and more importantly, processes need to be developed for the efficient coupling and integration of the components into a complete artificial photosynthetic system. In this talk I will introduce the original nanowire-based photochemical diode system design, and discuss the challenges associated with fixing CO2 through traditional chemical catalytic means, contrasted with the advantages and strategies that biology employs through enzymatic catalysts to produce more complex molecules at higher selectivity and efficiency. Introducing microorganisms as whole-cell catalysts into the overall photochemical diode system led to the generation of powerful photosynthetic biohybrids capable of converting sunlight, H2O and CO2 into food, fuels, pharmaceuticals, and materials.

第405回化学システム工学専攻公開セミナー Electrochemistry Meets Metal–Organic Frameworks – Toward Energy Conversion and Storage

工学部3号館4F 32号室
講演題目Electrochemistry Meets Metal–Organic Frameworks – Toward Energy Conversion and Storage
講演者Chung-Wei Kung, PhD
Associate Professor
Department of Chemical Engineering
National Cheng Kung University, Taiwan
* Short Bio: https://www.chemsys.t.u-tokyo.ac.jp/wp-content/uploads/2023/12/Short-Bio-CWKung.pdf
概要The development of clean energy has gained more and more attention in recent years, and electrochemical technologies play an important role in a range of clear-energy applications. The design and synthesis of highly active electrode materials, namely, the active thin film modified on the electrode surface that can facilitate the desired electrochemical reaction, are thus crucial for the development of high-performance electrochemical devices toward energy and environmental applications. Metal–organic frameworks (MOFs), also known as porous coordination polymers (PCPs), are thus highly attractive for electrochemical systems owing to their ultrahigh specific surface area, tunable pore structure in the molecular scale, and tunable chemical functionality within the nanopores. However, the electrically insulating nature and relatively poor chemical stability of most MOFs strongly limit the use of pristine MOFs in electrochemical applications [1]. Since 2018, our research group in National Cheng Kung University (NCKU) has worked on the design and synthesis of chemically robust MOFs and their composite materials with electronically and/or ionically conducting properties, aiming for utilizing such highly porous and stable MOF-based materials in electrocatalysis, electroanalysis, and electrochemical energy storage. This talk will cover our cutting-edge findings in the fundamentals and applications of highly water-stable group(IV) metal-based MOFs, including the Zr(IV)-based MOFs and Ce(IV)-based MOFs, toward the use in electrochemical systems. The topics would include the use of postsynthetic modifications to render redox-reaction-based charge hopping for electrocatalytic reactions [2-3], the design of electrically conductive and highly porous MOF-carbon nanocomposites [3-4], and the unique roles of electrochemically “inactive” MOFs in electrochemical systems [5-6].
* Reference shown in the pdf file: https://www.chemsys.t.u-tokyo.ac.jp/wp-content/uploads/2023/12/Talk-title-and-abstract-CWKung.pdf
世話人Vincent Tung(内線28752)

第404回化学システム工学専攻公開セミナー 触媒内部構造設計とマイクロ波外場印加の協奏による革新的触媒プロセス開発に向けた基礎的研究

(東京大学大学院工学系研究科化学システム工学専攻 助教)
概要触媒は、グリーン水素を起点とするカーボンニュートラル化学プロセス開発の中心的役割を果たす。求められる触媒反応は、水素貯蔵・運搬のための水素キャリア製造(アンモニア・有機ハイドライド)、およびその脱水素反応、CO2水素化反応による有用化合物製造など多岐にわたる。加えて、触媒反応の駆動方法にも課題があり、従来型のボイラー加熱などから、局所CO2排出の少ない電力駆動への転換(電化)が望まれている。 講演者は、触媒内部のナノレベル精密設計と、触媒外部からのマイクロ波照射による反応駆動によって、反応活性・触媒寿命・電力駆動の三位一体を目指した革新的触媒プロセスの開発に取り組んできた。内部構造設計においては、担持金属ナノ粒子の近傍に層状二次元材料やミクロ多孔体などを用いたナノ空間を創り出すことで、活性・寿命の向上を目指してきた。また、触媒外部からマイクロ波の印加については、単にエネルギー源を電力に置き換えるのみならず、触媒活性点に対してナノ・原子レベルでのエネルギー集中を可能とし、反応活性・選択性すらも向上できることを実証してきた。本講演では、これらの基礎的研究について紹介するとともに、グリーン水素を起点とした触媒プロセス開発についての今後の展望を述べる。

第403回化学システム工学専攻公開セミナー マルチフィジックスモデルによる電気化学デバイスの定量解析

(東京大学大学院工学系研究科化学システム工学専攻 助教)

第402回化学システム工学専攻公開セミナー Ultra Clean Contacts on Two-Dimensional Semiconductors

工学部3号館4F 32号室 (工学部3号館 6C06-6C07号室から変更)
講演題目Ultra Clean Contacts on Two-Dimensional Semiconductors
講演者Prof. Manish Chhowalla
Materials Science & Metallurgy, University of Cambridge, Cambridge, UK

Prof Chhowalla, FREng, is the Goldsmiths’ Professor of Materials Science at the University of Cambridge. His research interests are in the fundamental studies of atomically thin two-dimensional transition metal dichalcogenides (TMDs). In particular, his group studies the optical and electronic properties of different phases of 2D TMDs. He has demonstrated that it is possible to induce phase transformations in atomically thin materials and utilize phases with disparate properties for field effect transistors, catalysis, and energy storage. Prof Chhowalla is a Fellow of the Materials Research Society, Institute of Physics, the Royal Society of Chemistry and Churchill College. He was the founding Editor in Chief of Applied Materials Today and is now the Associate Editor of ACS Nano.
概要Exploitation of fundamental properties of atomically thin (two-dimensional, 2D) semiconductors – particularly those from the transition metal dichalcogenide (TMD) family – for electronics will require ultra-clean contacts with resistances approaching the quantum limit. The lack of high quality, low contact resistance p- and n-type contacts on 2D semiconductors has limited progress in next generation of low power devices such as the tunnel field effect transistors. In this presentation, we summarize strategies and provide guidance for making clean van der Waals (vdWs) contacts on mono-layered semiconductors that can efficiently inject both spins and charges.
世話人Vincent Tung(内線28752)