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Young JM, Mondal A, Barckholtz TA, Kiss G, Koziol L, Panagiotopoulos AZ. Predicting chemical reaction equilibria in molten carbonate fuel cells via molecular simulations. AIChE J 2020. [DOI: 10.1002/aic.16988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jeffrey M. Young
- Department of Chemical and Biological Engineering Princeton University Princeton New Jersey USA
| | - Anirban Mondal
- Department of Chemical and Biological Engineering Princeton University Princeton New Jersey USA
| | | | - Gabor Kiss
- ExxonMobil Research and Engineering Annandale New Jersey USA
| | - Lucas Koziol
- ExxonMobil Research and Engineering Annandale New Jersey USA
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Mondal A, Young JM, Barckholtz TA, Kiss G, Koziol L, Panagiotopoulos AZ. Genetic Algorithm Driven Force Field Parameterization for Molten Alkali-Metal Carbonate and Hydroxide Salts. J Chem Theory Comput 2020; 16:5736-5746. [DOI: 10.1021/acs.jctc.0c00285] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anirban Mondal
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Jeffrey M. Young
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | | | - Gabor Kiss
- ExxonMobil Research and Engineering, Annandale, New Jersey 08801, United States
| | - Lucas Koziol
- ExxonMobil Research and Engineering, Annandale, New Jersey 08801, United States
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Lindberg GE. Structure and diffusion of molten alkali carbonate salts at the liquid-vacuum interface. PEERJ PHYSICAL CHEMISTRY 2019. [DOI: 10.7717/peerj-pchem.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The liquid-vacuum interface of molten alkali carbonate salts is studied with molecular dynamics simulations. Three salts comprised of LixNayKzCO3 near their respective eutectic concentrations are considered to understand the distribution of ions relative to a liquid-vacuum interface and their diffusivity. These simulations show that each of the cations accumulate at the interface preferentially compared to carbonate. The cation ordering is found to inversely correspond to cation radius, with K being the most likely occupant at the surface, followed by Na, Li, and then the anion. Similar to other studies, the carbonate is found to diffuse more slowly than the cations, but we do observe small differences in diffusion between compositions that present opportunities to optimize ion transport. These results hold consequences for our understanding of ion behavior in molten carbonate salts and the performance of devices employ these electrolytes.
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Affiliation(s)
- Gerrick E. Lindberg
- Department of Applied Physics and Materials Science, Department of Chemistry and Biochemistry, Center for Materials Interfaces in Research and Applications, Northern Arizona University, Flagstaff, AZ, United States of America
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Kiyobayashi T, Kojima T, Ozaki H, Kiyohara K. Ionic conductivity of molten alkali-metal carbonates A2CO3 (A = Li, Na, K, Rb, and Cs) and binary mixtures (Li1−xCsx)2CO3 and (Li1−xKx)2CO3: A molecular dynamics simulation. J Chem Phys 2019; 151:074503. [DOI: 10.1063/1.5109912] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Tetsu Kiyobayashi
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Toshikatsu Kojima
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Hiroyuki Ozaki
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Kenji Kiyohara
- Inorganic Functional Materials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
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Desmaele E, Sator N, Vuilleumier R, Guillot B. The MgCO3–CaCO3–Li2CO3–Na2CO3–K2CO3 melts: Thermodynamics and transport properties by atomistic simulations. J Chem Phys 2019; 150:214503. [DOI: 10.1063/1.5099015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Elsa Desmaele
- CNRS, Laboratoire de Physique Théorique de la Matière Condensée, LPTMC, Sorbonne Université, F75005 Paris, France
| | - Nicolas Sator
- CNRS, Laboratoire de Physique Théorique de la Matière Condensée, LPTMC, Sorbonne Université, F75005 Paris, France
| | - Rodolphe Vuilleumier
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Bertrand Guillot
- CNRS, Laboratoire de Physique Théorique de la Matière Condensée, LPTMC, Sorbonne Université, F75005 Paris, France
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