Resource Circulation Technology Research Team

Efficient Recovery of Critical Metals for a Zero Emission Society

We seek to develop high-efficiency and environmentally friendly recovery technologies for critical metals that are indispensable for producing lithium-ion secondary batteries (LIBs), rare-earth magnets, catalysts, and other products.

Resource Circulation Technology Research Team

Research themes

  • Simple rare-earth magnet recycling process
  • Recovery of rare-earth elements (REEs) from unconventional sources
  • New critical metal recovery process from waste LIBs
  • Highly efficient technologies to recover platinum group metals

Concept for social contributions and implementation

Our goal is to establish processes for recycling critical metals from urban mines.

Research Team Leader / Greetings

Leader

OISHI Tetsuo

The importance of highly efficient metallurgical and recycling processes is growing even more owing to the recent changes in international trends toward decarbonization and a circular economy. Our research team will contribute to the elimination of metal resource constraints in a zero emission society by establishing processes that can be put to practical use.

OISHI Tetsuo

Members

Principal Research Manager (Resource Circulation Technology Research Team)

NARITA Hirokazu

Planning Officer, Research Planning Office of Zero Emission (Resource Circulation Technology Research Team)

KATASHO Yumi

Member

OKI Tatsuya

Member

HAYASHI Naohito

Invited Senior Researcher

TANAKA Mikiya

Technical Staff

KAYUKAWA Rie

Technical Staff

SAITO Tomoko

Technical Staff

TOMITA Kaoru

Technical Staff

YAGUCHI Miki

Technical Staff

YOSHIOKA Kazuko

We seek to develop high-efficiency and environmentally friendly recovery technologies for critical metals (e.g., Li, Co, Ni, rare earth elements, and platinum group metals (PGM)) that are indispensable for producing lithium-ion secondary batteries (LIBs), rare-earth magnets, PGM catalysts, and other products.

Video

Research

Katasho, Y.; Yaguchi, M.; Oishi, T., In situ Optical Observation and X-ray Transmission Imaging of Mg–Tb Liquid Droplet Formation and Dendritic Tb Metal Growth on Mg Electrodes, J. Electroanal. Chem. 2026, 1017, 120336

Published JUL 01 2026
Mechanism Analysis of RE–Ni Alloying and Dealloying for Rare‑Earth Magnet Recycling (KATASHO Yumi, OISHI Tetsuo)

Mechanism Analysis of RE–Ni Alloying and Dealloying for Rare‑Earth Magnet Recycling (KATASHO Yumi, OISHI Tetsuo)

Katasho, Y.; Oishi, T., In Situ X-ray Diffraction/Fluorescence and Crystal Orientation Analysis for Nd–Ni Electrochemical Alloying and Dealloying in Molten Salt, J. Electrochem. Soc. 2025, 172, 062505

Published JUN 25 2025

Fujiwara, K.; Ito, K.; Kuzuhara, S.; Terakado, O.; Hosoya, N.; Hayashi, H.; Kasuya, R., Development of Fluorine Fixation Processes for the Horizontal Recycling of Lithium, Materials 2025, 18, 2050/1-14

Published APR 30 2025

Highlights

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