Research

Electrochemistry laboratory is working on fundamental study for applying ionic liquids to various electrochemical processes and devices.

Video (YouTube)

Electrochemistry in ionic liquids

Ionic liquids are defined as liquids composed of ions. Although high temperature molten salts are also included in ionic liquids, liquid melts around ambient temperature are often called ionic liquids in recent years. Species existing in ionic liquids undergo strong coulombic interaction in addition to van der Waals interaction. These interactions have been known to influence electrode reactions in ionic liquids. In this laboratory, electrode reactions of various metal species are investigated in ionic liquids.

Application to rechargeable batteries

Rechargeable lithium-ion batteries use aprotic organic electrolytes, which are volatile and flammable. Thus, organic electrolytes may cause such serious disasters as explosion and combustion in case of accident. Since ionic liquids are generally non-volatile, ionic liquids are expected to improve the safety of rechargeable lithium batteries. This laboratory is working on fundamental research on applying ionic liquids to rechargeable lithium batteries and redox flow batteries.

Application to electrodeposition and plating

It is possible to obtain ionic liquids having high electrochemical stability by combining proper cations and anions. In such ionic liquids, various metals, which are unable to be deposited in aqueous solutions, are expected to be deposited. Electrodeposition of metals is important for electrorefining and plating. In this laboratory, electrodeposition of various metals is investigated in ionic liquids.

Photoelectrochemistry

Photo-assisted electrode reactions are realized using semiconductor electrodes and are utilized for direct conversion of photoenergy to electric or chemical energy. Photovoltaic cells having large electromotive force and long lives are expected to be developed by using ionic liquids, which has wide electrochemical potential window and non-volatility. Variety of photoelectrochemical reactions on semiconductor electrodes are studied in ionic liquids in this laboratory.

Recent papers

• Nobuyuki Serizawa, Takumi Hisada, and Yasushi Katayama, Electrode Reactions of Copper Species in a Bis(fluorosulfonyl)amide Ionic Liquid, Electrochemistry, 92, 043009 (2024), [DOI:10.5796/electrochemistry.24-69010]
• Sho Okazaki, Nobuyuki Serizawa, and Yasushi Katayama, Formation and Breakdown of the Solid-electrolyte Interphase in a Bis(fluorosulfonyl)amide-based Ionic Liquid in the Presence of Lithium Ion, Electrochemistry, 92, 043006 (2024), [DOI:10.5796/electrochemistry.23-69152]
• Nobuyuki Serizawa, Ryo Yamashita, and Yasushi Katayama, Formation and Aging of the Solid Electrolyte Interphase on Lithium in Bis(fluorosulfonyl)amide-Type Ionic Liquids, J. Phys. Chem. C, 127, 10434 (2023). [DOI: 10.1021/acs.jpcc.3c01482]
• Shodai Kato, Nobuyuki Serizawa, and Yasushi Katayama, Solid-Electrolyte Interphase Formation in Amide-Type Ionic Liquids in the Presence of Different Metal Cations, J. Electrochem. Soc., 170, 056504 (2023). [DOI:10.1149/1945-7111/acd14a]
• Shodai Kato, Nobuyuki Serizawa, and Yasushi Katayama, Redox Reactions of Ag(I)/Ag and Ferrocenium/Ferrocene in 1-Butyl-1-methylpyrrolidinium Bis(fluorosulfonyl)amide Ionic Liquid, J. Electrochem. Soc., 170, 046504 (2023). [DOI:10.1149/1945-7111/acc9e2]
• Nobuyuki Serizawa, Surugu Kuwahara, and Yasushi Katayama, Electrochemical Behavior of Silver Halogenocomplexes in an Amide- Type Ionic Liquid, J. Electrochem. Soc., 169, 092502 (2022). [DOI:10.1149/1945-7111/ac8bac]
• Shodai Kato, Nobuyuki Serizawa, and Yasushi Katayama, Determination of the Formation Potential of Solid-Electrolyte Interphase in Amide-Type Ionic Liquids Containing Lithium Salts, J. Electrochem. Soc., 169, 076509 (2022). [DOI:10.1149/1945-7111/ac7eef]
• Ryota Furuya, Nobuyuki Serizawa, and Yasushi Katayama,Potential Dependence of the Impedance of Solid Electrolyte Interphase in Some Electrolytes, Electrochemistry, 90, 057002 (2022). [DOI:10.5796/electrochemistry.22-00031]
• Ryota Furuya, Tomitaro Hara, Takao Fukunaga, Kiyomoto Kawakami, Nobuyuki Serizawa, and Yasushi Katayama, Deposition and Dissolution of Lithium in 1-Methyl-1- methoxyethylpyrrolidinium Bis(fluorosulfonyl)amide Ionic Liquid Electrolyte with Different Compositions, J. Electrochem. Soc., 168, 100516 (2021). [DOI:10.1149/1945-7111/ac2a7e]
• Hsing-Wen Yeh, Nobuyuki Serizawa, and Yasushi Katayama, Electrochemical Recovery of Cobalt from Cobalt Oxide in an Amide-Type Ionic Liquid with Low-Temperature Carbochlorination, J. Electrochem. Soc., 168, 082502 (2021). [DOI:10.1149/1945-7111/ac180c]
• Kazuki Yoshii, Takuya Uto, Takakazu Onishi, Daichi Kosuga, Naoki Tachikawa, and Yasushi Katayama, Ether-Functionalized Pyrrolidinium-Based Room Temperature Ionic Liquids: Physicochemical Properties, Molecular Dynamics, and the Lithium Ion Coordination Environment, ChemPhysChem, 22, 1584 (2021). [DOI:10.1002/cphc.202100380]
• Marjanul Manjum, Nobuyuki Serizawa, and Yasushi Katayama, "Electrodeposition of Co in an Amide-Type Ionic Liquid under an External Magnetic Field", J. Electrochem. Soc., 168 (2021) 042504. [DOI:10.1149/1945-7111/abf50b]
• Nitaro Yuza, Nobuyuki Serizawa, and Yasushi Katayama,　J. Electrochem. Soc., 168, 036509 (2021). [DOI:10.1149/1945-7111/abe9ce]
• Kazuki Yoshii, Takuya Uto, Naoki Tachikawaa and Yasushi Katayama,"The effects of the position of the ether oxygen atom in pyrrolidinium-based room temperature ionic liquids on their physicochemical properties", Phys. Chem. Chem. Phys., 22, 19480 (2020). [DOI:10.1039/d0cp02662j]
• Nobuyuki Serizawa, Kazuki Kitta, Naoki Tachikawa, and Yasushi Katayama, "Characterization of the Solid-Electrolyte Interphase between a Cu Electrode and LiN(CF₃SO₂)₂-triglyme Solvate Ionic Liquid", J. Electrochem. Soc., 167, 110560 (2020). [DOI:10.1149/1945-7111/aba701]
• Marjanul Manjum, Nobuyuki Serizawa, Adriana Ispas, Andreas Bund and Yasushi Katayama, "Electrochemical Preparation of Cobalt-Samarium Nanoparticles in an Aprotic Ionic Liquid", J. Electrochem. Soc., 167, 042505 (2020). [DOI:10.1149/1945-7111/ab79a8]
• Keita Ando, Naoki Tachikawa, Nobuyuki Serizawa, and Yasushi Katayama, "Electrochemical Behavior of a Ni Chlorocomplex in a Lewis Basic Ionic Liquid Containing Chloride Ion", J. Electrochem. Soc., 167, 062505 (2020). [DOI:10.1149/1945-7111/ab7f21]
• Nobuyuki Serizawa, Kojiro Wada, Naoki Tachikawa, and Yasushi Katayama, "Redox Reaction of 2,2,6,6,-Tetramethylpiperidine-1-oxyl in Lithium Bis(trifluoromethylsulfonyl)amide-tetraglyme Solvate Ionic Liquid", J. Electrochem. Soc., 167, 046510 (2020). [DOI: 10.1149/1945-7111/ ab77a4]
• Marjanul Manjum, Naoki Tachikawa, Nobuyuki Serizawa, and Yasushi Katayama, "Electrochemical Behavior of Samarium Species in an Amide-Type Ionic Liquid at Different Temperatures", J. Electrochem. Soc., 166, D483 (2019). [DOI: 10.1149/2.0141912jes]
• Maoko Sano, Naoki Tachikawa, Kazuki Yoshii, Nobuyuki Serizawa, Yasushi Katayama, "Electrodeposition of Tin in an Amide Type Ionic Liquid Containing Chloride Ion", Electrochemistry, 86, 260 (2018). [DOI:10.5796/electrochemistry.18-00033]
• Nobuyuki Serizawa, Yo Kobayashi, Hajime Miyashiro, Yasushi Katayama, "Deposition and Dissolution of Copper on a Quartz Crystal Resonator in Contact with a Separator", Electrochemistry,86, 250 (2018). [DOI:10.5796/electrochemistry.18-00035].
• Shimul Saha, Naoki Tachikawa, Kazuki Yoshii, Nobuyuki Serizawa, Yasushi Katayama, "Electrodeposition of Cadmium from Lewis Basic Hydrophobic Room-temperature Ionic Liquid", Electrochemistry, 86, 229 (2018). [DOI:10.5796/electrochemistry.18-00011]
• Nobuyuki Serizawa, Katsuhito Takei, Tokujiro Nishikiori, Yasushi Katayama, Yasuhiko Ito, Infrared Spectra of N–H Compounds in LiCl-KCl-CsCl Molten Salts Using the Diffuse Reflectance Optical System, Electrochemistry, 86, 88 (2018). [DOI:10.5796/electrochemistry.17-00084]
• Naoki Tachikawa, Ryo Haruyama, Kazuki Yoshii, Nobuyuki Serizawa, Yasushi Katayama, Redox Reaction of Tris(acetylacetonato)iron(III) Complex in an Amide-type Ionic Liquid, Electrochemistry, 86, 32 (2018). [DOI:10.5796/electrochemistry.17-00080]
• Yasushi Katayama, Takumi Wakayama, Naoki Tachikawa, Kazuki Yoshii, Nobuyuki Serizawa, Electrochemical Study on Aluminum Speciation in Lewis Acidic Chloroaluminate-Bis(trifluoromethylsulfonyl)amide Mixed Ionic Liquids, Electrochemistry, 86, 42 (2018). [DOI:10.5796/electrochemistry.17-00077]
• Hiroki Sato, Shimul Saha, Naoki Tachikawa, Kazuki Yoshii, Nobuyuki Serizawa, Yasushi Katayama, Electrochemical Formation of Selenium Nanoparticle in an Amide-type Ionic Liquid, Electrochemistry, 86, 57 (2018). [DOI:10.5796/electrochemistry.17-00076]
• 芹澤信幸，片山　靖，「電気化学QCMによるイオン液体中における金属析出・溶解反応の解析」，表面技術, 69, 10 (2018).
• Naoki Takchikawa, Rie Kasai, Kazuki Yoshii, Masayoshi Watanabe, and Yasushi Katayama, "Electrochemical Deposition and Dissolution of Lithium on a Carbon Fiber Composite Electrode in a Solvate Ionic Liquid", Electrochemistry, 85, 667 (2017). [DOI:10.5796/electrochemistry.85.667]
• Yasushi Katayama, Hiroyuki Murakami, Kazuki Yoshii, and Naoki Tachikawa, "Electrochemical formation of a cesium–tin alloy in an amide-type ionic liquid", Electrochem. Commun., 84, 61 (2017). [DOI:10.1016/j.elecom.2017.10.006]
• Sharmin Sultana, Naoki Tachikawa, Kazuki Yoshi, KazunobuToshima, Luca Magagnin, Yasushi Katayama, "Electrochemical Preparation of Platinum Nanoparticles from Bis(acetylacetonato)platinum(II) in Some Aprotic Amide-type Ionic Liquids", Electrochim. Acta, 249, 263 (2017). [DOI:10.1016/j.electacta.2017.08.021]
• Yasushi Katayama, Shota Nakayama, Naoki Tachikawa, and Kazuki Yoshii, "Electrochemical Behavior of Tris(2,2'-bipyridine)Cobalt Complex in Some Ionic Liquids", J. Electrochem. Soc., 164, H5286 (2017). [DOI:10.1149/2.0431708jes]
• Sharmin Sultana, Naoki Tachikawa, Kazuki Yoshii, Luca Magagnin, Kazunobu Toshima and Yasushi Katayam, "Electrochemical Behavior of Bis(acetylacetonato)platinum(II) Complex in an Amide-Type Ionic Liquid", J. Electrochem. Soc., 163, D401 (2016). [DOI:10.1149/2.0581608jes]
• Shimul Saha, Naoki Tachikawa, Kazuki Yoshii, and Yasushi Katayama, "Electrodeposition of Selenium in a Hydrophobic Room-Temperature Ionic Liquid", J. Electrochem. Soc., 163, D259 (2016). [DOI: 10.1149/2.1241606jes]
• Naoki Tachikawa, Ryota Furuya, Kazuki Yoshii, Masayoshi Watanabe, Yasushi Katayama, "Deposition and Dissolution of Lithium through Lithium Phosphorus Oxynitride Thin Film in Lithium Bis(trifluoromethylsulfonyl)amide-Glyme Solvate Ionic Liquid", Electrochemistry, 83, 846 (2015). [doi:10.5796/electrochemistry.83.846]
• Hirotsugu Hirayama, Naoki Tachikawa, Kazuki Yoshii, Masayoshi Watanabe, and Yasushi Katayama, "Ionic Conductivity and Viscosity of Solvate Ionic Liquids Composed of Glymes and Excess Lithium Bis(Trifluoromethylsulfonyl)Amide, Electrochemistry, 83, 824 (2015). [doi:10.5796/electrochemistry.83.824]
• Nobuyuki Serizawa, Kumi Shono, Yo Kobayashi, Hajime Miyashiro, Yasushi Katayama, Takashi Miura, Electrochemical quartz crystal microbalance measurement of a Li₄Ti₅O₁₂ composite electrode in a carbonate electrolyte, J. Power Sources, 295, 162 (2015). [doi: 10.1016/j.jpowsour.2015.06.148]
• Ryota Furuya, Naoki Tachikawa, Kazuki Yoshii, Yasushi Katayama, and Takashi Miura, Deposition and Dissolution of Lithium through Lithium Phosphorus Oxynitride Thin Film in Some Ionic Liquids, J. Electrochem. Soc., 162, H634 (2015). [doi:10.1149/2.0471509jes]
• Shimul Saha, Takuho Taguchi, Naoki Tachikawa, Kazuki Yoshii, Yasushi Katayama, "Electrochemical Behavior of Cadmium in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Room-temperature Ionic Liquid", Electrochim. Acta, 183, 42 (2015). [doi:10.1016/j.electacta.2015.05.018].
• Yasushi Katayama, Mami Yoshihara, and Takashi Miura, "Electrochemical Reaction of Tris(1,10-phenanthroline)iron Complexes in Some Amide-Type Ionic Liquids", J. Electrochem. Soc., 162, H501 (2015). [doi:10.1149/2.0091508jes]
• 立川直樹, 吉井一記, 片山　靖, "金属の酸化還元電位に基づく1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amideイオン液体のドナー性の評価", 分析化学, 64, 211 (2015). [doi: 10.2116/bunsekikagaku.64.211]
• Yasushi Katayama, Yosuke Oshino, Naoaki Ichihashi, Naoki Tachikawa, Kazuki Yoshii, and Kazunobu Toshima, "Electrochemical preparation of palladium nanoparticles in bis(trifluoromethylsulfonyl)amide ionic liquids consisting of pyrrolidinium cations with different alkyl chain lengths", Electrochim. Acta, 183, 37 (2015). [doi:10.1016/j.electacta.2015.02.211]
• Kazuki Yoshii, Yosuke Oshino, Naoki Tachikawa, Kazunobu Toshima, and Yasushi Katayama, "Electrodeposition of palladium from palladium(II) acetylacetonate in an amide-type ionic liquid", Electrochem. Commun., 52, 21 (2015). [doi:10.1016/j.elecom.2015.01.003]
• Yasushi Katayama, Yuichi Toshimitsu, and Takashi Miura, "Electrode Kinetics of the Redox Reaction of Tris(2,2'-bipyridine)nickel Complexes in an Ionic Liquid", Electrochim. Acta, 131, 36 (2014). [doi: 10.1016/j.electacta.2013.12.087]
• Yan-Li Zhu, Yasushi Katayama, and Takashi Miura, "Effects of coumarin and saccharin on electrodeposition of Ni from a hydrophobic ionic liquid", Electrochim. Acta, 123, 303 (2014). [doi: 10.1016/j.electacta.2013.12.181]
• Yasushi Katayama, Tomoyuki Endo, Takashi Miura, and Kazunobu Toshima, "Electrodeposition of Gold in an Amide-Type Ionic Liquid", J. Electrochem. Soc., 161, D87 (2014). [doi: 10.1149/2.010403jes]

History

Electrochemistry laboratory has a long history from the beginning of Faculty of Science and Technology, Keio University. More than 500 persons of alumni and alumna are active in the world.

Successive professors.

FUJIOKA, Tadahito (1946-1949)

1896 Born in Aomori
1919 Graduated Tokyo Imperial University
1939 Professor of Seoul Imperial University
1943 Received Doctor of Engineering
1946 Professor of Keio University
1949.4.9 Passed away by angina

TAKEI, Takeshi (1952-1969)

1899 Born in Saitama
1920 Graduated Tokyo Institute of Technology
1927 Graduated Tohoku Imperial University
1927 Research associate of Tohoku Imperial University
1929 Associate professor of Tokyo Institute of Technology
1930 Invented ferrite
1932 Receive Doctor of Science
1936 Professor of Tokyo Institute of Technology
1952 Received Medal with Blue Ribbon
1952 Professor of Keio University
1969 Received Fukuzawa award
1969 Retired Keio University
1969 Emeritus professor of Keio University
1970 Received The Order of the Rising Sun, Gold and Silver Star
1977 Hold the fist international conference on ferrite
1978 Emeritus professor of Tokyo Institute of Technology
1978 Person of Cultural Merits
1992.3.12 Passed away by respiratory failure

NAGAI, Takashi (1967-1986)

1920 Born in Tokyo
1944 Graduated Fujiwara Institute of Technology
1948 Research associate of Keio University
1950 Lecturer of Keio University
1952 Associate professor of Keio University
1960 Received Ph.D. (Engineering)
1961-62 Visiting researcher in Aachen University
1962 Received Excellent Paper Award of ECSJ
1967 Professor of Keio University
1974 Visiting professor of Technical University of Berlin
1986 Retired Keio University
1986 Emeritus professor of Keio University
1987 Professor of Iwaki Meisei University
1999.12.13 Passed away by pneumonia

KISHI, Tomiya (1980-2001)

1936 Born in Tokyo
1959 Graduated Keio University
1964 Research associate of Keio University
1966 Received Ph.D. (Engineering)
1966-7 Visiting researcher of Aachen University
1969 Lecturer of Keio University
1972 Associate professor of Keio University
1980 Professor of Keio University
1997-8 President of ECSJ
2000-1 President of SFJ
2001 Retired Keio University
2001 Emeritus professor of Keio University
2021 Passed away

MIURA, Takashi (1996-2014)

1948 Born in Tokyo
1972 Graduated Keio University
1974 Research associate of Keio University
1977 Received Ph.D. (Engineering)　
1979-81 Visiting researcher of Aachen University
1983 Lecturer of Keio University
1990 Associate professor of Keio University
1996 Professor of Keio University
2007-9 Vice-president of ECSJ
2014 Retired Keio University
2014 Emeritus professor of Keio University