The above is the title of the research paper. The article below is some 3rd or 4th party news source.
This electrolyzer uses a single electrode to produce both the hydrogen and oxygen, depending on polarity. They claim that this reduces the chance that hydrogen and oxygen might mix and make an explosive mixture. But if the electrode makes both, depending on the time, it seems to me that some small amount of mixing is inevitable. There must be some way of cleaning all the remaining bubbles off the electrode before the switch is made.
https://newsreadeck.com/article/scitechdaily/producing-hydrogen-energy-new-method-is-safer-simpler-and-more-efficient/aa497d4681402f661b49850840a679a4/?articleURL=aHR0cHM6Ly9zY2l0ZWNoZGFpbHkuY29tL3Byb2R1Y2luZy1oeWRyb2dlbi1lbmVyZ3ktbmV3LW1ldGhvZC1pcy1zYWZlci1zaW1wbGVyLWFuZC1tb3JlLWVmZmljaWVudC8%3D&utm_source=flipboard&utm_content=mjalhassan%2Fmagazine%2FGreen+Planet