▎ 摘　　要

NOVELTY - Preparing an asymmetric thin-film humidity sensor involves filtering the dispersion of graphene oxide and nano cellulose. The mass fraction of graphene oxide in the dispersion is 2.5-10.0%. A nano cellulose/graphene oxide gel is formed on the filter membrane. A nylon mesh is placed on the upper surface of the nanocellulose/graphene oxide gel. The nylon mesh embossed a patterned structure on the upper surface of the gel, and then dried. An asymmetric membrane humidity sensor is formed between the filter membrane and the nylon mesh. USE - Method for preparing an asymmetric thin-film humidity sensor. ADVANTAGE - The method enables to prepare an asymmetric thin-film humidity sensor is simple and cheap preparation process, environment friendly, non-toxic and harmless, and has a fast linear humidity response.