NameResearch topic
Yuki Orikasa 
Associate ProfessorKen-ichi OkazakiElectrochemistry
Associate ProfessorKeiji ShimodaSolid state chemistry
Assistant ProfessorChengchao ZhongSolid state chemistry
PhD StudentNur ChamidahLithium-ion battery
PhD StudentShintaro Tachibana
Future battery
Graduate StudentRyo MuraokaLithium-ion battery
Graduate StudentYu ShintomiAll-solid-battery
Graduate StudentAika TakezawaPolymer electrolyte fuel cell
Graduate StudentShu TsuchidaLithium-ion battery
Graduate StudentKazuki FujimuraAll-solid-battery
Graduate StudentAyaka WatanabeAll-solid-battery
Graduate StudentZhihao ChenFuture battery
Graduate StudentTailei XuFuture battery
Graduate StudentYukino ItoSolid state chemistry
Graduate StudentAyaka KameiAll-solid-battery
Graduate StudentAyane SugimuraWater electrolysis
Graduate Student Tatsumi SuzukiLithium-ion battery
Graduate StudentAmi SoyamaAll-solid-battery
Graduate StudentSaya HirakawaSolid state chemistry
Graduate StudentMao MatsumotoAll-solid-battery
Graduate StudentKaoruko Morita Polymer electrolyte fuel cell
Graduate StudentRinka YamamotoLithium-ion battery
Graduate StudentYusaku Ikeda 
Graduate StudentZhang Shicong 
Undergraduate Student Yuta Ishiguro 
Undergraduate Student Airi Kato 
Undergraduate Student Yutaro Goto 
Undergraduate Student Takanari Shotai 
Undergraduate Student Sae Takada 
Undergraduate Student Rukiya Hanahara 
Undergraduate Student Shinjiro Hirai 
Undergraduate Student Kei Hirabayashi 
Undergraduate Student Sho Miyagi 
StaffKeiko Ushio
StaffMiho MuramotoSynchrotron
StaffNobuko Watanabe 

Summary of our research

In order to determine the rate-determining reactions achieve higher performance in electrochemical devices such as lithium ion batteries and fuel cells, it is important to understand reaction hierarchies over wide temporal and spatial ranges (from the nanometer to the centimeter scale) that proceed sequentially within the device. Research and development of new advanced analysis technologies to enable operando observation during electrochemical reactions is necessary to understand the structure of these hierarchies. In this study, we established an operando measurement technique that enables analysis of the electrode/electrolyte interface of the reaction site, phase transitions of active materials, and macro reactions within real electrodes over various spatial and temporal scales.  We also provided fundamental knowledge of the dynamic behavior of the lithium ion battery. This analytical technique is a dramatic step forward in that it pioneers a new way of performing kinetic analysis by introducing space and time axes for reaction analyses. It is also applicable to reaction analysis of various types of electrochemical devices. Moreover, we successfully designed and developed materials for innovative batteries by integrating information obtained using this technique.

Yuki ORIKASA Professor



2010          PhD in Human and Environmental Studies

Kyoto University, Japan

Supervised by Prof. Yoshiharu Uchimoto

Due for submission March 2010

Thesis Title: Material Design for Mixed Conducting Perovskite Type Oxide Cathodes of High Temperature Electrochemical Devices

2009          Visitng Student, Electrochemical Energy Lab,

            Massachusetts Institute of Technology  

2007          M.A., Department of Interdisciplinary Environment, Graduate School of Human and Environmental Studies, Kyoto University, Japan

2005          B.A., Faculty of Integrated Human Studies, Kyoto University, Japan


2016-               Associate Professor, Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University

2011-2016           Assistant Professor, Graduate School of Human and Environmental Studies, Kyoto University, Japan

2010-2011           Assistant Professor, Office of Society-Academia Collaboration for Innovation, Kyoto University, Japan

2008-2010           Research Fellow, Japan Society for the Promotion of Science