@article{bibcite_36771, author = {Olivia T Vulpin and James B Mitchell and Lihaokun Chen and Jeonghoon Lim and Sayantan Sasmal and Nathan G Price and Sam R Jarvis and Shannon W Boettcher}, title = {Comparing Advanced Bipolar Membranes for High-Current Electrodialysis and Membrane Electrolysis}, abstract = {

Advanced bipolar membranes (BPMs) with low water-dissociation overpotential (ηwd) may enable new electrochemical technologies for electrolysis, fuel cells, acid{\textendash}base synthesis, brine remediation, lithium-battery recycling, and cement production. However, these advanced BPMs have only been demonstrated in BPM water electrolysis (BPMWE) configurations where the BPM is under static compression by the porous-transport layers. It is important to study these BPMs in applications like electrodialysis where large degrees of static compression are not possible. We present a BPM electrodialysis (BPMED) platform to measure water-dissociation overpotential (ηwd) and compare BPMWE and BPMED systems. We show advanced BPMs with half the ηwd compared to commercial BPMs for BPMED while maintaining \~{}90\% current efficiency from 0.05{\textendash}0.5 A cm{\textendash}2. The BPMED ηwd values are, however, about 0.2 V higher at 0.5 A cm{\textendash}2 than those for BPMWE. Regardless, these results show that BPMs developed and optimized in BPMWE applications are well-suited for next-generation high-current-density BPMED technologies.

}, year = {2025}, booktitle = {ACS Energy Letters}, journal = {ACS Energy Letters}, series = {ACS Energy Letters}, volume = {10}, pages = {845-852}, month = {14/02/2025}, institution = {American Chemical Society (ACS)}, publisher = {American Chemical Society (ACS)}, issn = {2380-8195, 2380-8195}, url = {https://doi.org/10.1021/acsenergylett.4c03538}, doi = {10.1021/acsenergylett.4c03538}, }