Japanese

 

2015 Research Highlights, Development of Electrode Materials for Next-Generation High-Energy Density Storage Batteries

Points of Interest

Development of next-generation batteries with high energy density that can be used for electric vehicle (EV) applications is highly desired. AIST has developed metal polysulfide materials which display unique electrochemical performance.

Voltage-capacity plots of conventional electrode materials (oxides) in comparison to the newly developed materials (sulfides)
Voltage-capacity plots of conventional electrode materials (oxides)
in comparison to the newly developed materials (sulfides)

It was difficult to enhance the capacity of conventional materials, as only the transition metal cation is responsible for the redox process during the (dis)charge reaction. However, by using the newly-developed polysulfide materials, redox process not only entails the participation of the transition metal (cation) but also sulfur (anion). The cumulative participation of both the metal and sulfur during the redox process in these polysulfide materials is an epoch-making process to achieving high capacities, beyond the conventional materials.

*Part of this work was conducted under the auspices of NEDO RISING project.

Links

Contact

Atsushi Sakuda, Senior Researcher  
Atsushi Sakuda
Senior Researcher
Advanced Electrochemical Device RG, Research Institute of Electrochemical Energy

AIST Kansai, 1-8-31,Midorigaoka,Ikeda,Osaka 563-8577, Japan

E-mail: advecd-ml*aist.go.jp (Please convert "*" to "@".)
TEL: +81-72-751-7932
Web: https://unit.aist.go.jp/riecen/gae/index_en.html


▲ ページトップへ