纳米片
水分
材料科学
相(物质)
纳米技术
化学工程
复合材料
工程类
化学
有机化学
作者
Yuan‐Ming Cao,Yang Su,Mi Zheng,Peng Luo,Yang‐Biao Xue,Binbin Han,Min Zheng,Zuoshan Wang,Liang‐Sheng Liao,Ming‐Peng Zhuo
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-12-20
卷期号:18 (1): 492-505
被引量:10
标识
DOI:10.1021/acsnano.3c08132
摘要
Flexible moisture–electric generators (MEGs) capture chemical energy from atmospheric moisture for sustainable electricity, gaining attention in wearable electronics. However, challenges persist in the large-scale integration and miniaturization of MEGs for long-term, high-power output. Herein, a vertical heterogeneous phase-engineering MoS2 nanosheet structure based silk and cotton were rationally designed and successfully applied to construct wearable MEGs for moisture–energy conversion. The prepared METs exhibit ∼0.8 V open-circuit voltage, ∼0.27 mA/cm2 current density for >10 h, and >36.12 μW/cm2 peak output power density, 3 orders higher than current standards. And the large-scale device realizes a current output of 0.145 A. An internal phase gradient between the 2H semiconductor MoS2 in carbonized silks and 1T metallic MoS2 in cotton fibers enables a phase-engineering-based heterogeneous electric double layer functioning as an equivalent parallel circuit, leading to enhanced high-power output. Owing to their facile customization for seamless adaptation to the human body, we envision exciting possibilities for these wearable METs as integrated self-power sources, enabling real-time monitoring of physiological parameters in wearable electronics.
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