Technology Area

Electric Storage Devices

Outline of the area

Tetsuya Osaka
Professor Emeritus, Senior Research Professor, Waseda University

It is requested to further spread Electric Vehicles (EVs) and renewable energy generation for reducing GHG emission. For example, in order to improve the cruising distance of EVs, the electricity storage device has to provide both higher energy density and higher power. In addition, as the power generation based on the renewable energy increases, the stationary electricity storage devices become more necessary for stabilizing the short-term fluctuation load in the electricity system. In this ALCA Tech. Area, we are promoting the R&D for the innovative electricity storage device as the key technologies.

Until now, we have been promoting R&D of various game changing technologies such as the battery, electrical capacitor, and fuel cell. Especially, with regard to the battery, some PIs have been transferred to the ALCA top-down proposal type technology area, “ALCA-SPRING” through the stage gate evaluation. Besides battery technology, we have been promoting research on the structure-property relationship of the carbon-based material which are keys to electricity storage devices such as the battery system, cathode material, anode material, electrolytic solution, graphene, graphene-like graphite, carbon alloy catalyst and so on. We will go forward towards further improvement of the performance of electricity storage devices from now on, considering the property needed in the context of social implementation.


Development of Graphene-Based Carbon Materials for High-Rate Perfomance and High-Capacity Negative Electrode of Lithium Ion Battery

Yoshiaki Matsuo
Associate Professor, University of Hyogo

A novel carbon material "graphene like graphite (GLG)" showing high-rate performance, high capacity and low irreversible capacity will be prepared from the pyrolysis of graphite oxide. When it is used as a negative electrode of lithium ion battery, EV and PHEV will be more widely available, which result in the reduction of CO2 emission.


In-Situ Study of Lithium-Ion (De)Intercalation by Using Interface Ion Conduction Microscope for Creation of High-Performance LiBs

Tomokazu Matsue
Professor, AIMR, Tohoku University

A key challenge for the creation of high-performance lithium-ion batteries (LIBs) is to understand the intrinsic mechanism of the inhomogeneity in lithium-ion transport across the interface between electrode and electrolyte. We apply an interface ion-conductance microscope, a newly-developed electrochemical microscope, for revealing the mechanism. Further, this new analytical technique will contribute to design concept of the battery structure, leading to the creation of high-performance LIBs.

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