Skip to main content
Skip to main menu Skip to spotlight region Skip to secondary region Skip to UGA region Skip to Tertiary region Skip to Quaternary region Skip to unit footer

Slideshow

Advances in Catalysts for Oxygen Evolution Reaction (OER): Synthesis, Mechanism, and Electrochemical Performance

Portrait of Ali Ahmed, speaker
Date & Time:
-
Location:
Davison Life Sciences Building, Room C120

The seminar will focus on recent advancements in enhancing the efficiency of the Oxygen Evolution Reaction (OER) in water electrocatalysis. Three innovative approaches will be discussed: Se-doped FeOOH electrocatalysts, which demonstrate that selenium doping significantly enhances the OER activity of FeOOH, achieving an industrial-level current output of 500 mA cm⁻² at a low overpotential of 348 mV, and showing a high solar-to-hydrogen efficiency of 18.55%, making it a promising candidate for cost-effective and efficient hydrogen production; atomically dispersed nickel in porous carbon nanosheets, introducing a low-cost electrocatalyst composed of atomically dispersed nickel coordinated with nitrogen and sulfur species in porous carbon nanosheets, exhibiting excellent OER activity and durability with a low overpotential of 1.51 V at 10 mA cm⁻² and a small Tafel slope of 45 mV dec⁻¹, outperforming traditional Ir-based catalysts; and hexagonal boron nitride (hBN) as a co-catalyst, exploring the use of one-atom-thick hexagonal boron nitride as a co-catalyst, which significantly improves OER efficiency by encapsulating various electrocatalytic electrodes with hBN films, resulting in an ultralow Tafel slope of ~30 mV dec⁻¹ and a reaction current of ~2000 mA cm⁻² at an overpotential of ~490 mV, sustained for over 150 hours, with the hBN co-catalysts mass activity surpassing commercial catalysts by up to five orders of magnitude. These studies collectively highlight the potential of novel materials and strategies to develop highly efficient and cost-effective OER electrocatalysts for sustainable hydrogen production.

 

  1. Lu, Y.; Li, B.; Xu, N.; Zhou, Z.; Xiao, Y.; Jiang, Y.; Li, T.; Hu, S.; Gong, Y.; Cao, Y. One-Atom-Thick Hexagonal Boron Nitride Co-Catalyst for Enhanced Oxygen Evolution Reactions. Nature Communications 2023, 14 (1), 6965. https://doi.org/10.1038/s41467-023-42696-3.
  2. Hou, Y.; Qiu, M.; Kim, M. G.; Liu, P.; Nam, G.; Zhang, T.; Zhuang, X.; Yang, B.; Cho, J.; Chen, M.; Yuan, C.; Lei, L.; Feng, X. Atomically Dispersed Nickel–Nitrogen–Sulfur Species Anchored on Porous Carbon Nanosheets for Efficient Water Oxidation. Nature Communications 2019, 10 (1). https://doi.org/10.1038/s41467-019-09394-5.
  3. ‌ (Niu, S.; Jiang, W.-J.; Wei, W.; Tang, T. K.; Ma, J.; Wan, L.-J. Se-Doping Activates FeOOH for Cost-Effective and Efficient Electrochemical Water Oxidation. Journal of the American Chemical Society 2019, 141 (17), 7005–7013. https://doi.org/10.1021/jacs.9b01214.
Ali Ahmed
Department:
Graduate Student, Department of Chemistry
University of Georgia

Support Us

We appreciate your financial support. Your gift is important to us and helps support critical opportunities for students and faculty alike, including lectures, travel support, and any number of educational events that augment the classroom experience. Click here to learn more about giving.

Every dollar given has a direct impact upon our students and faculty.

Got More Questions?

Undergraduate inquiries: chemreg@uga.edu 

Registration and credit transferschemreg@uga.edu

AP Credit, Section Changes, Overrides, Prerequisiteschemreg@uga.edu

Graduate inquiries: chemgrad@uga.edu

Contact Us!

Assistant to the Department Head: Donna Spotts, 706-542-1919 

Main office phone: 706-542-1919 

Main Email: chem-web@franklin.uga.edu

Head of Chemistry: Prof. Jason Locklin