[DGIF연사미리보기 #6] Tetsuya Osaka 교수님과 그의 연구

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에너지공학전공에서는 DGIF 2017에 "Next Generation Batteries"를 주제로 11개의 강연이 준비되어 있습니다. Waseda Univ. Department of Applied Chemistry에서 석좌교수로 재직 중이신 Tetsuya Osaka 교수님의 이번 강연 주제인 Lithium-ion batteries (LIBs)와 관련된 책과 reference들을 모았습니다. Waseda Univ.의 Researcher DB에서 협업할 연구자도 탐색해보고, 내일 이어질 DGIST 연사 두 분의 강연에도 많은 관심 가져주세요!

DGIF 2017: Next G. Batteries


[DGIF 2017] New Materials and Strategies on Future Energy Storages

▶ Date: Nov. 30 2017, 14:00~14:30
▶ Place: 241(2F), E7, DGIST
▶ Speaker: Tetsuya Osaka / Waseda University
▶ Title: New Materials and Strategies on Future Energy Storages
▶ Abstract
In the lecture, new materials and Strategies on energy storages will be surveyed and especially on regarding material development for future lithium batteries. Lithium ion batteries (LIBs) are one of the most promising storage devices because of their high energy density and high-power output. To increase the energy density, it is important to keep the capacity balance of the cathode and anode to be equal; an improved capacity on only either electrode does not contribute to increasing the whole energy density in LIB.1 Therefore, capacities of both anode and cathode should be improved simultaneously. For the anode materials silicon anode 2-4 (theor. cap.: 4200 mAh/g) and Lithium metal and for the cathode materials sulfur cathode 5, 6 (theor. cap.: 1600 mAh/g) would be for next-generation batteries. Furthermore, the all solid LIBs are proposed with the high conductive solid electrolyte for the further target for the final safety LIB system......

연사의 이력(CV)

[Researcher Database] Waseda UniversityWASEDA University Researcher Database

Osaka 교수님은 Waseda Univ.에서 1974년 공학박사학위를 취득한 뒤, Georgetown Univ.에서 박사후과정을 거쳐 현재는 모교의 Department of Applied Chemistry에서 석좌교수로 재직 중이십니다. 
동료인 Prof. Takayuki HOMMA, Prof. Toshiyuki MOMMA와 함께 "Applied Physical Chemistry Laboratory"를 이끌고 계시며, 이번 DGIF 2017 lecture의 주제인 Lithium-ion batteries (LIBs) 외에도 Fuel Cell, Biomedical sensor 등 다양한 에너지 장비 응용기술을 연구하고 계십니다. 
2013-2014년에는 ECS(The Electrochemical Society)의 President를 역임했으며, 현재는 Waseda Univ. Research Organization for Nano & Life Innovation의 프로젝트 연구그룹인 "Research Institute for Life Support Innovation"에서 ultra-small field effect transistor (FET) biosensors를 개발하고 계십니다.

Waseda Univ.에서 제공하는 Researcher Database에서 교수님이 보유한 Energy, Nanotechnology / Materials의 Technology Seed와 관심 협업 분야 등을 확인해보세요!

Tetsuya Osaka's Research

Research Keyword

[Infographic] Research Keywords

지난 2012년 이후의 SCOPUS 등재논문 74편에 대한 내용을 키워드 분석한 내용입니다. 2차 전지가 가장 많이 등장하고, 관련 출판물도 늘어나고 있습니다.

Lecture Reference

[Lecture Reference] DGIF 2017 Meeting Abstract에 제시된 연사 추천 Reference List

# Lecture가 흥미로워 관련 자료를 더 찾아보고 싶거나, 아쉽게 Lecture를 놓쳤다면 아래 문헌들을 리뷰해보세요!

1. Osaka, T., Nara, H., Momma, T., & Yokoshima, T. (2014). New Si–O–C composite film anode materials for LIB by electrodepositionJournal of Materials Chemistry A2(4), 883-896.
2. Nara, H., Yokoshima, T., Momma, T., & Osaka, T. (2012). Highly durable SiOC composite anode prepared by electrodeposition for lithium secondary batteries. Energy & Environmental Science5(4), 6500-6505.
4. Ahn, S., Jeong, M., Miyamoto, K., Yokoshima, T., Nara, H., Momma, T., & Osaka, T. (2017). Development of Areal Capacity of Si-OC Composites as Anode for Lithium Secondary Batteries Using 3D-Structured Carbon Paper as a Current Collector. Journal of The Electrochemical Society164(2), A355-A359.
6. Wu, Y., Yokoshima, T., Nara, H., Momma, T., & Osaka, T. (2017). A pre-lithiation method for sulfur cathode used for future lithium metal free full battery. Journal of Power Sources342, 537-545.
7. Osaka, T., Mukoyama, D., & Nara, H. (2015). Development of Diagnostic Process for Commercially Available Batteries, Especially Lithium Ion Battery, by Electrochemical Impedance Spectroscopy. Journal of The Electrochemical Society162(14), A2529-A2537.
8. Yokoshima, T., Mukoyama, D., Nakazawa, K., Gima, Y., Isawa, H., Nara, H., ... & Osaka, T. (2015). Application of electrochemical impedance spectroscopy to ferri/ferrocyanide redox couple and lithium ion battery systems using a square wave as signal input. Electrochimica Acta180, 922-928.
9. Yokoshima, T., Mukoyama, D., Nara, H., Maeda, S., Nakazawa, K., Momma, T., & Osaka, T. (2017). Impedance Measurements of Kilowatt-Class Lithium Ion Battery Modules/Cubicles in Energy Storage Systems by Square-Current Electrochemical Impedance Spectroscopy. Electrochimica Acta, 246, 800-811

Book #1

[Book] Nanoscale Technology for Advanced Lithium Batteries / Tetsuya Osaka, editor. 

 - DGIST Library has full text access to this content
▶ Editors: Tetsuya Osaka, Zempachi Ogumi
▶ Title: Nanoscale Technology for Advanced Lithium Batteries
▶ Publisher: Springer 2014.
▶ Page: VIII, 273 p. 
▶ ISBN: 9781461486749
▶ Keyword: #Lithium-ion Batteries(LIBs) #Electrochemical Nanotechnology #Future Energy Storages

Book chapter

[Wiley Online Library] Modern Electroplating, Fifth EditionModern Electroplating, Fifth Edition - Wiley Online Library

 - DGIST Library has full text access to this content
Editor(s): Mordechay Schlesinger, Milan Paunovic
▶ Published Online: 24 FEB 2011
▶ Page: 363 p.
▶ ISBN: 9780470167786(Print) / 9780470602638(Online)
▶ DOI: 10.1002/9780470602638
▶ About this Book
The definitive resource for electroplating, now completely up to date
A must-have for anyone in electroplating, including technicians, platers, plating researchers, and metal finishers, Modern Electroplating, Fifth Edition is also an excellent reference for electrical engineers and researchers in the automotive, data storage, and medical industries.
▶ Prof. Osaka's work

Book #2

[Book] Electrochemistry at the nanoscale소장자료

 - DGIST Library has full text access to this content
도서관 5층 자료실에서 대출하실 수 있습니다!
▶ Editors: Patrik Schmuki, Sannakaisa Virtanen
▶ Title: Electrochemistry at the nanoscale
▶ Publisher: Springer 2009.
▶ Page: X, 471 p. 
▶ ISBN: 9780387735818
▶ Keyword: #Electrochemistry #Nanochemistry

DGIST Speaker

Yong Chan Choi

[Meeting Abstract] Developments on Hybrid Solar Cells Based on Solution-Processed Sb-Related Light Absorbers

Yong Chan Choi
DGIST, Convergence Research Center for Solar Energy
Dec. 1 09:00~09:30

Sb-related chalcogenides, such as Sb2S3, Sb2Se3, and Sb2(S,Se)3, are of particular interest as light absorbers for solar cells because of their excellent optical properties including easily tunable band-gaps by adjustable composition, high molar extinction coefficients, and large intrinsic dipole moments. Recently, the high efficiency of ~ 7.5 % in the Sb2S3-sensitized devices was achieved via a thioacetamide-assisted post-surface-treatment [1]. In addition, different methods have been suggested for improving device performance as well as reproducibility [1–5]. However, the photovoltaic performances is still restricted by strong charge recombination (low open circuit voltage VOC) and insufficient light-harvesting (low short circuit current density JSC). In this talk, I will introduce recent developments in several types of solar cells based on Sb-Chs, i.e. Sb2S3, Sb2Se3, and graded Sb2(S,Se)3. The materials are fabricated by different solutions methods, such as chemical bath deposition, single source precursor method, complex solution method, and combined method. The material properties and their device performances are highly dependent on the methods used. I will show the correlation of fabrication methods and materials with photovoltaic performances. Finally, I will briefly introduce new light absorbers of Sb chalcohalides and their application to solar cells [6]. This talk may give some clues for further efficiency improvements and enlightens us to find proper methods and potential absorbers.

[1] Choi et al., Adv. Funct. Mater. 24, 3587 (2014).
[2] Choi et al., Angew. Chem. Int. Ed. 53, 1329 (2014).
[3] Choi et al., Adv. Energy Mater. 4, 1301680 (2014).
[4] Choi et al., Adv. Funct. Mater. 25, 2892 (2015).
[5] Sung and Kim et al., J. Ind. Eng. Chem. in press (2017).
[6] Seok and Choi et al., Adv. Energy Mater. in press (2017).

Seung-Tae Hong

[Meeting Abstract]  Post Li-ion Battery Materials Based on Divalent-Ion (Mg, Zn, Ca) Intercalation Chemistry

Seung-Tae Hong
DGIST, Department of Energy Science and Engineering
Dec. 1 10:00~10:30

Li ion batteries (LIBs) are one of the most successful energy storage devices for portable electronics application, electrical vehicles, and utility grids. However, there are still strong needs for higher energy density and lower price materials than what the LIB systems can provide. Environmental friendliness, reliability, safety and plentiful sources could be typical advantages of magnesium, zinc and magnesium materials over the lithium. A rechargeable battery utilizing intercalation of divalent ions such as Mg2+, Zn2+ and Ca2+ could be one of the strategies to overcome capacity limit of LIBs, and/or to produce lower price batteries. Mg rechargeable batteries have received attention since the reversible Mg intercalation into the Chevrel phase, Mo6S8, was demonstrated in 2000. Very recently, zinc- or calcium-based rechargeable batteries have also received attention. However, only a limited number of materials have been reported for the successful host materials that can intercalate such divalent ions reversibly. The electrochemical intercalation chemistry is one of emerging research fields for future batteries. In the conference, a recent progress in our exploration for new intercalation chemistry of such divalent ions into various host materials will be presented, utilizing aqueous electrolytes as well as non-aqueous electrolytes.

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