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Materials Electrochemistry Lab (Hiroaki Nakano)
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A lab that studies plating and metal smelting and recycling, with electrochemistry at its core.
AboutAbout the lab
Process technology development grounded in electrochemistry
The Materials Electrochemistry Lab (Nakano-Taninouchi Lab) studies process technologies such as plating, non-ferrous metal smelting, and urban mining recycling, based on an understanding of electrochemical phenomena.
Grounded in the fundamentals of electrochemistry, the lab works on wet plating of functional thin films, electrowinning of zinc, copper, and nickel, and wet processing of sulfide minerals.
The lab aims to thoroughly understand the key reaction phenomena and to create highly efficient, environmentally friendly technologies.
Key terms
- Electrochemistry
- The field that deals with redox reactions and the accompanying movement of matter. It underlies the understanding of plating, batteries, and corrosion
- Composite electrodeposition
- A method in which fine particles such as oxides are deposited together with a metal film during plating
- Sacrificial protection
- The action by which zinc protects a steel sheet from corrosion even when the zinc plating is scratched and the steel is exposed
NewsLab news
Paper published on the crystal orientation relationship between Zn and Fe in electrogalvanized steel sheets
Paper published on the molten-salt electrochemistry of palladium (open access)
Paper on Zn-Mg compound composite electrodeposition published in Hyomen Gijutsu (Journal of the Surface Finishing Society of Japan)
ResearchResearch themes
Electrochemistry is the field that deals with redox reactions and the accompanying mass transfer, and it underlies the understanding and control of plating, batteries, corrosion, and the separation and purification of elements. The lab works on wet plating of functional thin films, electrowinning of zinc, copper, and nickel, wet processing of sulfide minerals, and urban mining recycling, aiming to understand reaction phenomena and to create environmentally friendly technologies.
*Illustrative imageComposite Electrodeposition for Corrosion-Resistant Steel Sheets
The lab studies composite electrodeposition, in which metal ions added to an aqueous solution are hydrolyzed and incorporated in situ into a zinc film as fine oxide particles. By varying the oxide content through the film thickness, the lab works on developing highly corrosion-resistant zinc-based plated steel sheets with sacrificial protection capability.
*Illustrative imageDeposition Mechanism of Alloy Plating
In alloys of zinc and iron-group metals, anomalous codeposition occurs, in which zinc, the electrochemically less noble metal, deposits first. The lab is trying to clarify the mechanism by investigating the effects of brighteners and electrodeposition conditions.
*Illustrative imageControlling the Crystal Morphology of Zinc Plating
The appearance, formability, and corrosion resistance of electrogalvanized steel sheets vary with the shape of the zinc crystals. The lab investigates how electrolysis conditions, additives, and other factors affect crystal shape and orientation, aiming to control crystal morphology.
*Illustrative imageEffects of Impurities and Additives in Electrowinning
The lab investigates how impurities and additives in the solution affect the shape of deposits and the current efficiency in the electrowinning of zinc, copper, and nickel. It explores synergistic effects of additive combinations so that processes can cope with the increase in impurities as ore grades decline.
MembersFaculty
The members of the Materials Electrochemistry Lab consist of faculty, administrative assistants, technical staff, laboratory assistants, JSPS Research Fellows, contract researchers, PhD, master's, and undergraduate students, and research students.As of 2026
- ProfessorHiroaki Nakano
- ProfessorYuki Taninouchi
- Assistant ProfessorSatoshi Oe
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Scrap metal recycling facility in Longview, Washington's industrial zone” Quintin Soloviev / CC BY 4.0 (cropped)
- Composite Electrodeposition for Corrosion-Resistant Steel Sheets: “Alan WorkShop For selling Galvanized Plain Sheets ^ making tanks water ^ oil Steel has been fabricating sheet metal products in Sulaymaniyah, Iraq since Owner, Raza Abdullah - panoramio” ASSAN Steel company / CC BY 3.0 (cropped)
- Deposition Mechanism of Alloy Plating: “Barrel Plating For Small Parts” Encik Tekateki / CC BY-SA 4.0 (cropped)
- Controlling the Crystal Morphology of Zinc Plating: “Galvanized surface” The original uploader was Splarka at English Wikipedia. / Public domain (cropped)
- Effects of Impurities and Additives in Electrowinning: “INSPIRATON CONSOLIDATED COPPER CO.'S ELECTROWINNING REFINING PLANT. PART OF ARIZONA'S EXTENSIVE COPPER INDUSTRY - NARA - 544026” Cornelius M. Keyes / Public domain (cropped)
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