Janus Membrane: Janus Membranes: Creating Asymmetry for Energy Efficiency (Adv. Mater. 43/2018)

Janus membranes, which have different properties on their two faces, offer new opportunities to address longstanding challenges in energy generation, transduction, and storage, while also enabling novel functionalities not possible with traditional membranes. In article number 1801495, Jingwei Hou, Seth B. Darling, and co-workers summarize the fundamental principles to prepare Janus membranes with asymmetric surface wettability and charges, and describe how they can work in conventional and unconventional membrane processes.