TY - JOUR
T1 - Simultaneous mapping of temperature and hydration in proton-exchange membranes of fuel cells using magnetic resonance imaging
AU - Chalise, Darshan
AU - Majumdar, Shreyan
AU - Cahill, David G.
N1 - The authors are thankful to Dr. Lingyang Zhu and Dr. Andre Sutrisno of the School of Chemical Science, University of Illinois at Urbana-Champaign, for assistance with the NMR measurements. This work was conducted in part at the Biomedical Imaging Center of the Beckman Institute for Advanced Science and Technology at the University of Illinois Urbana-Champaign (UIUC-BI-BIC). This work was supported by the Semiconductor Research Corporation (task ID: 3044.001). D.C. and D.G.C. designed the experiment. D.C. performed NMR measurements. D.C. and S.M. performed MRI measurements. All authors contributed to writing the manuscript. The authors declare no competing interests. We support inclusive, diverse, and equitable conduct of research.
The authors are thankful to Dr. Lingyang Zhu and Dr. Andre Sutrisno of the School of Chemical Science, University of Illinois at Urbana-Champaign, for assistance with the NMR measurements. This work was conducted in part at the Biomedical Imaging Center of the Beckman Institute for Advanced Science and Technology at the University of Illinois Urbana-Champaign (UIUC-BI-BIC). This work was supported by the Semiconductor Research Corporation (task ID: 3044.001 ).
PY - 2023/10/18
Y1 - 2023/10/18
N2 - The efficiency of a proton-exchange membrane (PEM) fuel cell depends on the mobility of protons in PEMs, which in turn is determined by the hydration and temperature of the membrane. Spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) contrast magnetic resonance imaging may be used to map hydration in PEMs under isothermal conditions, but not when there are thermal gradients in PEMs. In this work, we show that a combination of chemical shift and diffusion imaging can decouple and map temperature and hydration in PEMs. We demonstrate a 16 × 16 pixel magnetic resonance imaging mapping of hydration and temperature in Nafion PEMs with a spatial resolution of 1 × 1 mm and a total scan time of 3 min, with uncertainty in hydration and temperature of 15% and 6 K, respectively. The method can be generalized for exchange membranes of any flow batteries.
AB - The efficiency of a proton-exchange membrane (PEM) fuel cell depends on the mobility of protons in PEMs, which in turn is determined by the hydration and temperature of the membrane. Spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) contrast magnetic resonance imaging may be used to map hydration in PEMs under isothermal conditions, but not when there are thermal gradients in PEMs. In this work, we show that a combination of chemical shift and diffusion imaging can decouple and map temperature and hydration in PEMs. We demonstrate a 16 × 16 pixel magnetic resonance imaging mapping of hydration and temperature in Nafion PEMs with a spatial resolution of 1 × 1 mm and a total scan time of 3 min, with uncertainty in hydration and temperature of 15% and 6 K, respectively. The method can be generalized for exchange membranes of any flow batteries.
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U2 - 10.1016/j.xcrp.2023.101590
DO - 10.1016/j.xcrp.2023.101590
M3 - Article
AN - SCOPUS:85173178985
SN - 2666-3864
VL - 4
JO - Cell Reports Physical Science
JF - Cell Reports Physical Science
IS - 10
M1 - 101590
ER -