Research

Enhancing the Durability of Electrode Catalysts for Polymer Electrolyte Fuel Cells

　Polymer Electrolyte Fuel Cells (PEFCs) are at the forefront of clean energy technology, designed for both residential and automotive applications. These cells are recognized as potential game-changers in energy conversion. However, the commercial success of PEFCs hinges on two critical factors: reducing the production costs and enhancing the longevity of the materials used in batteries. The cost of electrode materials alone makes up approximately 40% of the total cost per cell. Therefore, developing electrodes that are not only cost-effective but also highly active and durable is of paramount importance.
　Our laboratory is dedicated to advancing the fundamental understanding of PEFCs. We focus on investigating the degradation mechanisms of Pt alloy catalysts used in cathodes, unraveling the complexities of electrode reaction mechanisms, and pioneering the development of innovative Pt alloy catalysts that minimize the use of platinum. This research is crucial for improving the efficiency and sustainability of fuel cells.

Understanding the Dissolution Mechanisms of Metal Materials at the Nanoscale

　Our lab specializes in the quantitative evaluation of the dissolution rates of metal materials, which is crucial for understanding their breakdown mechanisms and predicting their lifespan. These insights are essential for designing materials that are exceptionally durable. However, detecting this dissolution, particularly at the nano-to-atomic scale, presents significant challenges.
　We primarily study catalysts, biomaterials, and structural materials, utilizing a range of sophisticated techniques. These include electrochemical measurements, solution analyses, electron microscopy, and numerical simulations. Our goal is to develop advanced monitoring methods that can track the process of dissolution degradation at the nanoscale in real-world conditions. Additionally, using the data gathered from these methods, we strive to create guidelines for developing materials with superior corrosion resistance and to pioneer new anti-corrosion technologies

Soil Corrosion of Steel Materials

　In recent years, enhancing the durability of steel materials has become crucial, driven by the need for resource conservation and energy efficiency. Furthermore, the deterioration of infrastructure, which plays a vital role in our daily lives, poses a significant societal challenge. Steel components, such as piles buried in soil and reinforcement bars within concrete, are particularly prone to corrosion, which can lead to catastrophic failures. Unfortunately, these issues are compounded by the difficulty in visually inspecting such buried or embedded materials for signs of wear and damage.
　Our laboratory is committed to addressing these issues by developing advanced corrosion monitoring technologies. We utilize state-of-the-art electrochemical measurement techniques to assess and predict the longevity of steel materials in various environments. This research not only aims to enhance the safety and durability of infrastructure but also contributes to sustainable development practices.