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Basic study of metal ion isolation technology with switchable solvent

Research Project

Project/Area Number 18K18966
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 27:Chemical engineering and related fields
Research InstitutionTohoku University

Principal Investigator

Watanabe Masaru  東北大学, 環境保全センター, 教授 (40312607)

Co-Investigator(Kenkyū-buntansha) SmithRichard Le  東北大学, 環境科学研究科, 教授 (60261583)
Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords水熱酸浸出 / リチウムイオン電池 / リサイクル / 金属単離 / 配位子 / 物性可変溶媒 / アミノ酸 / カーバメート / リチウム / アルカリ金属 / 物性可変性 / アミン / 二酸化炭素 / コバルト / ニッケル / 錯体 / 分離 / 水熱反応 / 金属イオン / 単離濃縮 / リチウム電池リサイクル / 正極材料
Outline of Final Research Achievements

Based on the necessity of green process, we studied the budding technology of metal isolation and concentration process using hydrothermal mixed solvent system, which is defined as a solvent with variable properties, as a wet process contributing to LiB battery recycling technology using only water as a solvent. In the hydrothermal organic acid leaching, it was suggested that Mn could be isolated by selecting the organic acid and conditions. It was also shown that Ni and Co could be concentrated by solid-liquid separation by adding appropriate ligands to aqueous organic acid solutions containing Li, Co, and Ni. Subsequently, Li could be precipitated by mixing phosphoric acid with an aqueous organic acid solution containing Li.

Academic Significance and Societal Importance of the Research Achievements

Sustainable Development Goals(SDGs)に基づき、全ての人々が安心してエネルギーにアクセスできる権利を持つべきとの主張がなされたことにより、リチウムイオン電池(Li-ion battery: LiB)の需要は今後爆発的に高まり、それによる原料の価格高騰と廃棄物量の増大は容易に予想できる。資源量および価格安定には、自国内で流通する資源量を一定以上維持する努力が必要であり、すなわち廃棄されるLiBを二次資源とみなすリサイクル技術の開発が急務となる。本研究は、この社会要請にしたがったものであり、環境低負荷・価格合理的なリサイクル技術の開発を目指した研究である。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2021 2020 2019

All Journal Article (2 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Glycine-Assisted Hydrothermal Leaching of LiCoO2/LiNiO2 Cathode Materials with High Efficiency and Negligible Acid Corrosion Employing Batch and Continuous Flow System2021

    • Author(s)
      Zheng Qingxin、Shibazaki Kensuke、Hirama Seiya、Iwatate Yuta、Kishita Atsushi、Hiraga Yuya、Nakayasu Yuta、Watanabe Masaru
    • Journal Title

      ACS Sustainable Chemistry & Engineering

      Volume: 9 Issue: 8 Pages: 3246-3257

    • DOI

      10.1021/acssuschemeng.0c08703

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Continuous hydrothermal leaching of LiCoO2 cathode materials by using citric acid2020

    • Author(s)
      Zheng Qingxin、Shibazaki Kensuke、Ogawa Tetsufumi、Kishita Atsushi、Hiraga Yuya、Nakayasu Yuta、Watanabe Masaru
    • Journal Title

      Reaction Chemistry & Engineering

      Volume: 5 Issue: 12 Pages: 2148-2154

    • DOI

      10.1039/d0re00286k

    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] レアメタルの浸出方法及びレアメタルの分離方法2020

    • Inventor(s)
      渡邉賢、鄭慶新
    • Industrial Property Rights Holder
      渡邉賢、鄭慶新
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-166322
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] レアメタルの浸出方法、レアメタルの分離方法及びレアメタル抽出用抽出剤2019

    • Inventor(s)
      渡邉賢、柴崎絢介、スミスリチャードリー
    • Industrial Property Rights Holder
      渡邉賢、柴崎絢介、スミスリチャードリー
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-166322
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2018-07-25   Modified: 2022-01-27  

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