Simultaneous multimaterial operando tomography of electrochemical devices

被引:2
|
作者
Shrestha, Pranay [1 ]
Lamanna, Jacob M. [2 ]
Fahy, Kieran F. [1 ]
Kim, Pascal [1 ]
Lee, Chunghyuk [1 ,3 ]
Lee, Jason K. [1 ]
Baltic, Elias [2 ]
Jacobson, David L. [2 ]
Hussey, Daniel S. [2 ]
Bazylak, Aimy [1 ]
机构
[1] Univ Toronto, Fac Appl Sci & Engn, Dept Mech & Ind Engn, Bazylak Grp, Toronto, ON, Canada
[2] NIST, Phys Measurement Lab, Gaithersburg, MD USA
[3] Toronto Metropolitan Univ, Dept Chem Engn, Toronto, ON, Canada
基金
加拿大创新基金会; 加拿大自然科学与工程研究理事会;
关键词
IN-SITU; COMPUTED-TOMOGRAPHY; WATER DISTRIBUTION; NEUTRON; LAYERS; QUANTIFICATION; REDUCTION; PLATFORM;
D O I
10.1126/sciadv.adg8634
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The performance of electrochemical energy devices, such as fuel cells and batteries, is dictated by intricate physiochemical processes within. To better understand and rationally engineer these processes, we need robust operando characterization tools that detect and distinguish multiple interacting components/interfaces in high contrast. Here, we uniquely combine dual-modality tomography (simultaneous neutron and x-ray tomography) and advanced image processing (iterative reconstruction and metal artifact reduction) for high-contrast multimaterial imaging, with signal and contrast enhancements of up to 10 and 48 times, respectively, compared to conventional single-modality imaging. Targeted development and application of these methods to electrochemical devices allow us to resolve operando distributions of six interacting fuel cell components (including void space) with the highest reported pairwise contrast for simultaneous yet decoupled spatiotemporal characterization of component morphology and hydration. Such high-contrast tomography ushers in key gold standards for operando electrochemical characterization, with broader applicability to numerous multimaterial systems.
引用
收藏
页数:13
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