Key Laboratory for Advanced Materials Processing Technology, Ministry of Education of China, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, PR China.
Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.
Nat Commun. 2018 Oct 9;9(1):4166. doi: 10.1038/s41467-018-06633-z.
Hygroelectricity is proposed as a means to produce electric power from air by absorbing gaseous or vaporous water molecules, which are ubiquitous in the atmosphere. Here, using a synergy between a hygroscopic bulk graphene oxide with a heterogeneous structure and interface mediation between electrodes/materials with Schottky junctions, we develop a high-performance hygroelectric generator unit with an output voltage approaching 1.5 V. High voltage (e.g., 18 V with 15 units) can be easily reached by simply scaling up the number of hygroelectric generator units in series, enough to drive commercial electronic devices. This work provides insight for the design and development of hygroelectric generators that may promote the efficient conversion of potential energy in the environmental atmosphere to electricity for practical applications.
提出了利用吸湿材料从空气中吸收气态或蒸气水分子来产生电能的方法，因为这些水分子在大气中无处不在。在这里，我们利用具有非均匀结构的吸湿块状氧化石墨烯与肖特基结电极/材料之间的界面介导之间的协同作用，开发了一种具有接近 1.5V 输出电压的高性能吸湿发电单元。通过简单地增加串联的吸湿发电单元的数量，很容易达到高电压（例如，15 个单元的 18V），足以驱动商用电子设备。这项工作为设计和开发吸湿发电机提供了思路，这可能会促进环境大气中势能向电能的有效转换，以用于实际应用。
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