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Balamurugan J, Austeria PM, Kim JB, Jeong ES, Huang HH, Kim DH, Koratkar N, Kim SO. Electrocatalysts for Zinc-Air Batteries Featuring Single Molybdenum Atoms in a Nitrogen-Doped Carbon Framework. Adv Mater 2023; 35:e2302625. [PMID: 37327064 DOI: 10.1002/adma.202302625] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/24/2023] [Indexed: 06/18/2023]
Abstract
Bifunctional catalysts can facilitate two different electrochemical reactions with conflicting characteristics. Here, a highly reversible bifunctional electrocatalyst for rechargeable zinc-air batteries (ZABs) is reported featuring a "core-shell structure" in which N-doped graphene sheets wrap around vanadium molybdenum oxynitride nanoparticles. Single Mo atoms are released from the particle core during synthesis and anchored to electronegative N-dopant species in the graphitic shell. The resultant Mo single-atom catalysts excel as active oxygen evolution reaction (OER) sites in pyrrolic-N and as active oxygen reduction reaction (ORR) sites in pyridinic-N environments. ZABs with such bifunctional and multicomponent single-atom catalysts deliver high power density (≈376.4 mW cm-2 ) and long cycle life of over 630 h, outperforming noble-metal-based benchmarks. Flexible ZABs that can tolerate a wide range of temperatures (-20 to 80 °C) under severe mechanical deformation are also demonstrated.
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Affiliation(s)
- Jayaraman Balamurugan
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - P Muthu Austeria
- Division of Science Education and Institute of Fusion Science, Department of Energy Storage/Conversion Engineering of Graduate School, Jeonbuk National University Jeonju, Jeonju, 54896, Republic of Korea
| | - Jun Beom Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Eun-Suk Jeong
- Department of Physics Education and Institute of Fusion Science, Jeonbuk National University Jeonju, Jeonju, 54896, Republic of Korea
| | - Hsin-Hui Huang
- Division of Nanostructures Research Laboratory, Japan Fine Ceramics Center 2-4-1 Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
| | - Do Hwan Kim
- Division of Science Education and Institute of Fusion Science, Department of Energy Storage/Conversion Engineering of Graduate School, Jeonbuk National University Jeonju, Jeonju, 54896, Republic of Korea
| | - Nikhil Koratkar
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180, USA
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180, USA
| | - Sang Ouk Kim
- National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
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Kukunuri S, Austeria PM, Sampath S. Electrically conducting palladium selenide (Pd4Se, Pd17Se15, Pd7Se4) phases: synthesis and activity towards hydrogen evolution reaction. Chem Commun (Camb) 2016; 52:206-9. [DOI: 10.1039/c5cc06730h] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrically conducting, continuous films of different phases of palladium selenides are synthesized by the thermolysis of single source molecular precursors.
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Affiliation(s)
- Suresh Kukunuri
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - P. Muthu Austeria
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - S. Sampath
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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