Direct Power Generation from a Graphene Oxide Film under Moisture.

Zhao, Fei; Cheng, Huhu; Zhang, Zhipan; Jiang, Lan; Qu, Liangti · Adv Mater · 2015

basic_science · Level V

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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.