title: Direct Power Generation from a Graphene Oxide Film under Moisture.
abstract: An efficient moisture-electric-energy transformation is discovered by means of establishing an oxygen functional group gradient in a graphene oxide film. The moisture variation serves as an energy source to generate electric power with an energy-conversion efficiency of up to ≈62%. Based on this finding, a prototype power generator and a self-powered respiratory monitor are demonstrated under the stimulus of the human breath.
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Fei
authors.initials: F
authors.lastname: Zhao
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Huhu
authors.initials: H
authors.lastname: Cheng
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Zhipan
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Laser Micro-/Nano-Fabrication Laboratory, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Lan
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Liangti
authors.initials: L
authors.lastname: Qu
keywords: gradients; graphene oxide; moisture; power generation