@article{34669, author = {Tobias A Kistler and Guosong Zeng and James L Young and Lien-Chun Weng and Chase Aldridge and Keenan Wyatt and Myles A Steiner and Oscar Solorzano and Frances A Houle and Francesca M Toma and Adam Z Weber and Todd G Deutsch and Nemanja Danilovic}, title = {Emergent Degradation Phenomena Demonstrated on Resilient, Flexible, and Scalable Integrated Photoelectrochemical Cells}, abstract = {

Photoelectrochemical (PEC) water splitting provides a pathway to generate sustainable clean fuels using the two most abundant resources on Earth: sunlight and water. Currently, most of the successful models of PEC cells are still fabricated on small scales near 1 cm2, which largely limits the mass deployment of solar-fuel production. Here, the scale-up to 8 cm2 of an integrated PEC (IPEC) device is demonstrated and its performance compared to a 1 cm2 IPEC cell, using state-of-the-art iridium and platinum catalysts with III{\textendash}V photoabsorbers. The initial photocurrents at 1 sun are 8 and 7 mA cm-2 with degradation rates of 0.60 and 0.47 mA cm-2 day-1, during unbiased operation for the 1 and 8 cm2 devices, respectively. Evaluating under outdoor and indoor conditions at two U.S. National Laboratories reveals similar results, evidencing the reproducibility of this design{\textquoteright}s performance. Furthermore, the emerging degradation mechanisms during scale-up are investigated and the knowledge gained from this work will provide feedback to the broader community, since PEC device durability is a limiting factor in its potential future deployment.

}, year = {2020}, booktitle = {Advanced Energy Materials}, journal = {Advanced Energy Materials}, series = {Advanced Energy Materials}, volume = {10}, pages = {2002706}, month = {10/2020}, issn = {1614-6832}, doi = {10.1002/aenm.v10.4810.1002/aenm.202002706}, language = {eng}, }