Engineering Multifunctional Bismuth-Based Materials for Sustainable Energy Conversion and Storage
2025/6/18 10:30-11:30
総合研究棟B 310
Dr. Vadivel S MSc, PhD
Former JSPS Fellow (Tokyo Institute of Technology, Japan)
Assistant Professor (Research) | Department of Chemistry
SRM Institute of Science and Technology
Kattankulathur Campus | Chennai – 603203, India
Abstract:
The global push toward sustainable energy technologies necessitates the development of efficient, low-cost materials that can drive electrochemical processes with minimal environmental impact. This talk will highlight recent advances in the design and application of bismuth-based multifunctional materials for electrocatalysis and energy storage, with a focus on three strategically engineered systems.
First, we explore a Ru-minimised Bi₂Ru₂O₇@MOF-801 composite as a highly active catalyst for the oxygen evolution reaction (OER). This hybrid architecture combines the structural robustness of Bi₂Ru₂O₇ with the high surface area and porosity of MOF-801, resulting in superior catalytic activity while significantly reducing the use of noble metals, thereby addressing both performance and scalability. Next, we introduce α-Bi₂Mo₃O₁₂ as a dual-functional electrode material that facilitates both overall water splitting and supercapacitor applications. Its unique crystal structure supports rapid ion/electron transport, high electrochemical stability, and bifunctional catalytic behaviour, making it a strong candidate for integrated energy systems. Finally, we present layered bismuthene-modified Bi₂Te₃, wherein the incorporation of two-dimensional bismuthene layers enhances hydrogen evolution reaction (HER) activity. This design maximises the exposure of active sites, improves electronic conductivity, and demonstrates efficient charge transfer, offering a promising route for HER catalysis using abundant and low-toxicity elements.
These studies highlight the versatility of bismuth-based materials in addressing key challenges in the energy sector, particularly in minimising dependence on noble metals and enabling multifunctional performance. The talk will also discuss mechanistic insights, structure-activity relationships, and future directions for the real-world deployment of these materials.
References:
- P. Sujita, Keshav Gupta, and Sethumathavan Vadivel* et al., Nanoscale, 2025,17, 3714-3720
- P. Sujita and Sethumathavan Vadivel* et al., Chemistry: A European Journal, 2024, 30, e202402645.
- P. Sujita and Sethumathavan Vadivel* et al., Journal of Alloys and Compounds, 1003, 25, 2024, 175483
ホウ化水素研究センター (HBRC)