Dr. Shoji Hall
Register for Dr. Shoji Hall’s September 14 Webinar
Join the ECS National Capital Section webinar on Thursday, September 14, 2023, from 1200-1300h ET, when Dr. A. Shoji Hall of Johns Hopkins University presents his work on “Atomic-scale Insights into Electrocatalyst Structure and Function.”
Speaker: Dr. A. Shoji Hall
Assistant Professor
Department of Materials Science and Engineering
Johns Hopkins University
Date: September 14, 2023
Time: 1200-1300h ET
Registration Instructions
- The webinar is open to the public.
- Pre-registration through an ECS My Account is required to participate.
- ECS membership is not required.
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Abstract
The development of efficient renewable energy conversion and storage devices to curb climate change is one of the most important challenges of the 21st century. This can be addressed by using renewable electricity to manufacture chemical fuels and synthetic precursors or by generating electricity with carbon-neutral fuel cell devices. However, electrocatalytic processes are hampered by low efficiencies and poor reaction selectivity because of a lack of rational methods available to create controllable catalyst materials with the preferred electrochemical activities. In this seminar, Prof. Hall discusses the use of ordered intermetallic compounds (OICs), which are alloys that display high electrocatalytic activities because their well-defined compositions and long-range atomic scale ordering enable predictable geometric and electronic interactions, in contrast to the more widely studied solid-solution type alloys. However, OIC materials are difficult to synthesize in nanomaterial form as conventional synthesis methods offer poor control over the composition, phase, and morphology. Prof. Hall discusses efforts on the synthesis, stability, and catalytic activity of OICs prepared by electrochemical methods at room temperature and atmospheric pressure. His strategies include the use of electrochemically induced phase transformations, which enable the conversion of a base metal-rich alloy to an OIC richer in nobler metal by removal of the base metal, and the direct production of OIC materials by electrochemical deposition. Also discussed is how the atomically precise configuration of atoms within OICs is leveraged to reveal detailed insights into how a material’s structure regulates its electrochemical properties. Developing new methods for preparing OIC compounds under ambient conditions is essential for designing catalysts for the next generation of renewable energy conversion devices.
Dr. A. Shoji Hall
Anthony Shoji Hall is Assistant Professor in the Department of Materials Science and Engineering at Johns Hopkins University (JHU). The Hall group focuses on developing methods to produce nanostructured ordered intermetallic compounds at room temperature and atmospheric pressure for electrocatalytic applications, interrogating the structure-property relationships of materials for electrocatalytic applications, and understanding how the double-layer structure controls electrochemical reactivity.
Prof. Hall earned a BS in Chemistry at the University of California, Los Angeles in 2014 and PhD in Chemistry at The Pennsylvania State University in 2014. Before joining JHU, he completed a postdoctorate in the Chemistry Department at the Massachusetts Institute of Technology. Dr. Hall’s research has garnered awards including his selection as a Scialog Fellow for Advanced Energy Storage, an NSF CAREER Award, and ECS Toyota Young Investigator Fellowship.
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