Understanding the Current Distribution and Mass Transport Properties in 3D-Printed Architected Flow-Through Electrodes
Auston L. Clemens, Kyle Jung, Massimiliano Ferrucci, Megan E. Ellis, Jonathan T. Davis, Swetha Chandrasekaran, Zhen Qi, Christine A. Orme, Marcus A. Worsley, Rohan Akolkar, Anna Ivanovskaya, Nikola A. Dudukovic
TL;DR
This study explores how 3D-printed lattice structures affect current and mass transport in flow-through electrodes for energy storage.
Contribution
The paper introduces new scaling relationships (WaLattice and DaLattice–1) to predict and optimize electrochemical performance in architected electrodes.
Findings
Mass-transfer coefficients vary with lattice geometry, with Octet structures showing the highest performance.
Inertial effects become significant at Reynolds numbers above 3, especially in Octet lattices.
Current distribution uniformity is influenced by lattice design and process conditions.
Abstract
Architected materials offer promising advancements in energy storage by enabling highly customizable, high-surface-area, ordered, and low-defect porous structures. This study investigates the current distribution and mass transport within complex 3D-printed lattice electrodes under flow-through conditions. Conductive lattices were fabricated using microstereolithography followed by pyrolytic carbonization. Lattice geometry effects were analyzed by varying the unit cell type [simple cubic (SC), body- and face-centered cubic (BCC/FCC), IsoTruss, and Octet], porosity, and current density. Current distribution uniformity was investigated using a model high-efficiency copper deposition reaction. Local film thickness distributions were predicted using a numerical model and validated experimentally using micro-X-ray computed tomography. Scaling relationships for informing electrochemical…
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Taxonomy
TopicsSupercapacitor Materials and Fabrication · Advanced battery technologies research · Advanced Sensor and Energy Harvesting Materials