This is some blog's restatement of an MIT press release, neither of which appear to name or link to the actual paper or other useful writeup.
But judging by the researcher names and the date I believe the actual paper is titled "Extreme salt-resisting multistage solar distillation with thermohaline convection" which appears to be available as a PDF at https://www.cell.com/joule/pdf/S2542-4351(23)00360-4.pdf