Compact monopolar electrochemical stack designs using electrode arrays or corrugated electrodes

Journal article (2020)

Authors

H. Rajaei Energy Technology - Mechanical, Maritime and Materials Engineering
J.W. Haverkort Energy Technology - Mechanical, Maritime and Materials Engineering
Research Group
Energy Technology (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2020 H. Rajaei, J.W. Haverkort
DOI: https://doi.org/10.1016/j.electacta.2019.135470
Electrode architecture Electrolysers Printed electrodes Redox flow batteries
More Info
expand_more

Published Date

2020

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Research Group

Energy Technology

Abstract

A new compact electrode architecture with hollow pillar-shaped anodes and cathodes arranged in a ‘checkerboard’ pattern is analysed and shown to be equivalent to a particular arrangement of corrugated plate electrodes. Because all four sides of the flow channels are electrodes, this design takes up at least 1.5 to two times less volume compared to conventional ‘sandwich’-type configurations. The assumption underlying this theoretical scaling is illustrated with a 3D-printed metal prototype for alkaline water electrolysis using natural convection. For mass-transfer-limited electrolysers, fuel cells, electrowinning cells, and flow-batteries, the expected volume savings easily increase to a factor three or more.