Ryan T. Hannagan

2.0k total citations · 2 hit papers
37 papers, 1.6k citations indexed

About

Ryan T. Hannagan is a scholar working on Materials Chemistry, Renewable Energy, Sustainability and the Environment and Catalysis. According to data from OpenAlex, Ryan T. Hannagan has authored 37 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Materials Chemistry, 18 papers in Renewable Energy, Sustainability and the Environment and 12 papers in Catalysis. Recurrent topics in Ryan T. Hannagan's work include Catalytic Processes in Materials Science (21 papers), Electrocatalysts for Energy Conversion (18 papers) and Catalysis and Oxidation Reactions (8 papers). Ryan T. Hannagan is often cited by papers focused on Catalytic Processes in Materials Science (21 papers), Electrocatalysts for Energy Conversion (18 papers) and Catalysis and Oxidation Reactions (8 papers). Ryan T. Hannagan collaborates with scholars based in United States and United Kingdom. Ryan T. Hannagan's co-authors include E. Charles H. Sykes, Georgios Giannakakis, Maria Flytzani‐Stephanopoulos, Michail Stamatakis, Romain Réocreux, Yicheng Wang, Julia Schumann, Angelos Michaelides, Prashant Deshlahra and Phillip Christopher and has published in prestigious journals such as Science, Chemical Reviews and Journal of the American Chemical Society.

In The Last Decade

Ryan T. Hannagan

34 papers receiving 1.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Single-Atom Alloy Catalysis

2020 777 citations Ryan T. Hannagan, Georgios Giannakakis et al. profile →
First-principles design of a single-atom–alloy propane dehydrogenation catalyst

2021 299 citations Ryan T. Hannagan, Georgios Giannakakis et al. Science profile →

Peers

Countries citing papers authored by Ryan T. Hannagan

Since Specialization

Citations

This map shows the geographic impact of Ryan T. Hannagan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryan T. Hannagan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryan T. Hannagan more than expected).

Fields of papers citing papers by Ryan T. Hannagan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan T. Hannagan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryan T. Hannagan. The network helps show where Ryan T. Hannagan may publish in the future.

Co-authorship network of co-authors of Ryan T. Hannagan

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan T. Hannagan. A scholar is included among the top collaborators of Ryan T. Hannagan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryan T. Hannagan. Ryan T. Hannagan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Diagnosing mechanisms to mitigate anion exchange ionomer degradation during impure water electrolysis 2025 ·Energy & Environmental Science ·(unknown), Ryan T. Hannagan, (unknown), Sang‐Won Lee, Nicolas Tran, Kyra M. K. Yap, (unknown), Daniela H. Marin, (unknown), Michaela Burke Stevens, Thomas F. Jaramillo, Adam C. Nielander	0
2	In Situ Techniques to Understand the Potential- and pH-Dependent Dynamics of Cobalt, Cobalt Nitride, and Mixed Cobalt–Antimony Thin Film Catalysts for Electrochemical Oxygen Reduction 2025 ·ACS Applied Energy Materials ·(unknown), (unknown), Gaurav A. Kamat, Aniket S. Mule, Ryan T. Hannagan, (unknown), Michaela Burke Stevens, Thomas F. Jaramillo	1
3	On-line Inductively Coupled Plasma Mass Spectrometry Reveals Material Degradation Dynamics of Au and Cu Catalysts during Electrochemical CO₂ Reduction 2025 ·Journal of the American Chemical Society ·(unknown), Sang‐Won Lee, Kyra M. K. Yap, Aniket S. Mule, Ryan T. Hannagan, (unknown), Gaurav A. Kamat, Dong Un Lee, Michaela Burke Stevens, Adam C. Nielander, Thomas F. Jaramillo	10
4	Durable, pure water–fed, anion-exchange membrane electrolyzers through interphase engineering 2025 ·Science ·Shujin Hou, (unknown), (unknown), (unknown), Juhyun Oh, (unknown), (unknown), Ryan T. Hannagan, (unknown), Anthony C. Ekennia, Hui Duan, Michael J. Zachman, Joëlle Fréchette, Gregory M. Su, (unknown), Yushan Yan, Thomas F. Jaramillo, Shannon W. Boettcher	3
5	Direct Comparison of the Activity and Selectivity of Rh₁Cu and Ni₁Cu Single-Atom Alloy Sites for Ethanol Decomposition 2025 ·ACS Catalysis ·Yicheng Wang, Hio Tong Ngan, Hon Wai Lam, George Yan, Ryan T. Hannagan, (unknown), Nathaniel M. Eagan, Prashant Deshlahra, Philippe Sautet, E. Charles H. Sykes	3
6	Insights into the Acid Stability of Cobalt Electrocatalysts via Time‐Resolved Activity‐Durability Relationships for Tailored Bimetallic Thin Films 2025 ·Advanced Energy Materials ·(unknown), (unknown), (unknown), (unknown), Hussein O. Badr, Judith Zander, Aniket S. Mule, Ryan T. Hannagan, (unknown), (unknown), Michaela Burke Stevens, Thomas F. Jaramillo	0
7	Multimodal In Situ Characterization Uncovers Unexpected Stability of a Cobalt Electrocatalyst for Acidic Sustainable Energy Technologies 2025 ·Journal of the American Chemical Society ·(unknown), (unknown), Gaurav A. Kamat, Aniket S. Mule, Jaime E. Avilés Acosta, (unknown), (unknown), Ryan T. Hannagan, Adam C. Nielander, Michaela Burke Stevens, Thomas F. Jaramillo	5
8	Understanding the Effects of Anode Catalyst Conductivity and Loading on Catalyst Layer Utilization and Performance for Anion Exchange Membrane Water Electrolysis 2024 ·ACS Catalysis ·Melissa E. Kreider, Haoran Yu, Luigi Osmieri, (unknown), Kimberly S. Reeves, Daniela H. Marin, Ryan T. Hannagan, (unknown), Thomas F. Jaramillo, James L. Young, Piotr Zelenay, Shaun M Alia	29
9	Investigating Spillover Energy as a Descriptor for Single-Atom Alloy Catalyst Design 2023 ·The Journal of Physical Chemistry Letters ·Ryan T. Hannagan, (unknown), Romain Réocreux, Yicheng Wang, (unknown), Vinita Lal, (unknown), Yunfan Chen, Prashant Deshlahra, Michail Stamatakis, Nathaniel M. Eagan, E. Charles H. Sykes	13
10	Mechanistic Insights into Nonoxidative Ethanol Dehydrogenation on NiCu Single-Atom Alloys 2023 ·ACS Catalysis ·Dipna A. Patel, Georgios Giannakakis, George Yan, Hio Tong Ngan, Peng Yu, Ryan T. Hannagan, (unknown), Junjun Shan, Prashant Deshlahra, Philippe Sautet, E. Charles H. Sykes	27
11	Effect of Surface Temperature on the Distribution and Reactivity of Rh Active Sites for CO Oxidation 2023 ·ChemCatChem ·(unknown), (unknown), Adrian Hunt, Alex C. Schilling, Yicheng Wang, Ryan T. Hannagan, (unknown), Iradwikanari Waluyo, E. Charles H. Sykes	0
12	Protocol for assembling and operating bipolar membrane water electrolyzers 2023 ·STAR Protocols ·(unknown), Ryan T. Hannagan, Daniela H. Marin, Joseph T. Perryman, (unknown), McKenzie A. Hubert, Grace Lindquist, Lihaokun Chen, Michaela Burke Stevens, Shannon W. Boettcher, Adam C. Nielander, Thomas F. Jaramillo	8
13	Observation and Characterization of Dicarbonyls on a RhCu Single-Atom Alloy 2022 ·The Journal of Physical Chemistry Letters ·Yicheng Wang, Julia Schumann, (unknown), (unknown), E. Charles H. Sykes, Michail Stamatakis, Angelos Michaelides, Ryan T. Hannagan	7
14	First-principles design of a single-atom–alloy propane dehydrogenation catalyst breakdown → 2021 ·Science ·Ryan T. Hannagan, Georgios Giannakakis, Romain Réocreux, Julia Schumann, Jordan Finzel, Yicheng Wang, Angelos Michaelides, Prashant Deshlahra, Phillip Christopher, Maria Flytzani‐Stephanopoulos, Michail Stamatakis, E. Charles H. Sykes	299
15	Periodic Trends in Adsorption Energies around Single-Atom Alloy Active Sites 2021 ·The Journal of Physical Chemistry Letters ·Julia Schumann, (unknown), Ryan T. Hannagan, E. Charles H. Sykes, Michail Stamatakis, Angelos Michaelides	28
16	Tuning the Product Selectivity of Single-Atom Alloys by Active Site Modification 2021 ·Surface Science ·Ryan T. Hannagan, Yicheng Wang, Romain Réocreux, Julia Schumann, Michail Stamatakis, E. Charles H. Sykes	4
17	Atomic-Scale Surface Structure and CO Tolerance of NiCu Single-Atom Alloys 2019 ·The Journal of Physical Chemistry C ·Dipna A. Patel, Ryan T. Hannagan, (unknown), Alex C. Schilling, (unknown), E. Charles H. Sykes	44
18	Integrated Catalysis-Surface Science-Theory Approach to Understand Selectivity in the Hydrogenation of 1-Hexyne to 1-Hexene on PdAu Single-Atom Alloy Catalysts 2019 ·ACS Catalysis ·Jilei Liu, (unknown), M. M. Montemore, Antonios Trimpalis, Georgios Giannakakis, Junjun Shan, Sufeng Cao, Ryan T. Hannagan, E. Charles H. Sykes, Maria Flytzani‐Stephanopoulos	77
19	Controlling Molecular Switching via Chemical Functionality: Ethyl vs Methoxy Rotors 2019 ·The Journal of Physical Chemistry C ·(unknown), (unknown), Colin J. Murphy, (unknown), Zachary C. Smith, Ryan T. Hannagan, Natalie A. Wasio, (unknown), Dipna A. Patel, (unknown), Jean‐Sabin McEwen, Yu‐Shan Lin, E. Charles H. Sykes	11
20	A Review of Technologies for Characterization of Heavy Metal Contaminants 2016 ·Indian geotechnical journal ·Pradeep Kurup, (unknown), Ryan T. Hannagan, Shiran Yu, (unknown), (unknown), David Ryan, Ramaswamy Nagarajan, (unknown), G.B. Howe	29

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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