Electricity generation from phase-engineered flexible MoS2 nanosheets under moisture
Electricity generation from phase-engineered flexible MoS2 nanosheets under moisture
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在潮湿条件下利用相工程柔性 MoS2 纳米片发电
DOI：
10.1016/j.nanoen.2020.105630
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发表时间：
2021-03-01
期刊：
影响因子：
17.6
通讯作者：
Huang, Huihui
中科院分区：
文献类型：
--
作者：
He, Dunren;Yang, Yaocheng;Huang, Huihui
水力发电是一种新兴的新型发电现象，它是通过吸收水分将氢键能转化为化学势能作为电能来源。在这里，我们报告了一种基于柔性MoS2纳米片的高性能水蒸气能量采集器，其相位梯度从1T到2H。相位工程的MoS2膜可以提供19 mV和6.24 μ A的开路电压和短路电流输出，具有3 k Ω的低内阻。此外，根据对比实验和平面波密度泛函理论（DFT），提出了从相位工程MoS2薄膜发电的潜在机制。由于这种新型的水光伏装置具有灵活、安全、重量轻和易于规模化生产等优点，因此可以将其设计为可以集成在一次性口罩中的自供电人体呼吸监测器。输出电压可以通过相位工程设计的MoS2海绵的串联连接来进一步增强，以向商用电子设备供电。
Hydroelectricity is an emerging novel electricity generation phenomenon that the hydrogen bond energy is converted into chemical potential energy as electric power source by absorbing moisture. Here we report a high-performance water vapour energy harvester based on flexible MoS2 nanosheets with a phase gradient from 1T to 2H. The phase-engineered MoS2 film could provide open-circuit voltage and short-circuit current output of 19 mV and 6.24 mu A with a low internal resistance of 3 k Omega. Additionally, the underlying mechanism of electricity generation from phase-engineered MoS2 films was proposed in terms of contrast experiments and the plane wave density functional theory (DFT). Because of the advantages like flexible, safe, light weight and ease of scale production, this novel hydrovoltaic device could be designed as self-powered human-breathing monitor that can be integrated in disposable masks. The output voltage can be further enhanced to power commercial electronic devices by the serial connections of phase-engineered MoS2 sponges.