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Single-layer MoS2 nanopores as nanopower generators

机译：单层MoS2纳米孔作为纳米发电机

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摘要

Making use of the osmotic pressure difference between fresh water and seawater is an attractive, renewable and clean way to generate power and is known as 'blue energy'(1-3). Another electrokinetic phenomenon, called the streaming potential, occurs when an electrolyte is driven through narrow pores either by a pressure gradient(4) or by an osmotic potential resulting from a salt concentration gradient(5). For this task, membranes made of two-dimensional materials are expected to be the most efficient, because water transport through a membrane scales inversely with membrane thickness(5-7). Here we demonstrate the use of single-layer molybdenum disulfide (MoS2) nanopores as osmotic nanopower generators. We observe a large, osmotically induced current produced from a salt gradient with an estimated power density of up to 10(6) watts per square metre-a current that can be attributed mainly to the atomically thin membrane of MoS2. Low power requirements for nanoelectronic and optoelectric devices can be provided by a neighbouring nanogenerator that harvests energy from the local environment(8-11)-for example, a piezoelectric zinc oxide nanowire array(8) or single-layer MoS2 (ref. 12). We use our MoS2 nanopore generator to power a MoS2 transistor, thus demonstrating a self-powered nanosystem.
机译：利用淡水和海水之间的渗透压差是一种有吸引力的，可再生的，清洁的发电方式，被称为“蓝色能源”（1-3）。当电解质通过压力梯度（4）或盐浓度梯度（5）产生的渗透势被驱动通过狭窄的孔时，会发生另一种电动现象，称为流动势。对于此任务，由二维材料制成的膜有望成为最有效的膜，因为通过膜的水传输与膜的厚度成反比（5-7）。在这里，我们演示了单层二硫化钼（MoS2）纳米孔作为渗透性纳米功率发生器的用途。我们观察到由盐梯度产生的大的渗透感应电流，其估计的功率密度高达每平方米10（6）瓦-该电流主要归因于MoS2的原子薄膜。可以通过从本地环境中收集能量的相邻纳米发电机（例如，压电氧化锌纳米线阵列（8）或单层MoS2（参考文献12））提供对纳米电子和光电设备的低功率要求。 。我们使用MoS2纳米孔发生器为MoS2晶体管供电，从而展示了自供电的纳米系统。

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  • 来源
    《Nature》 |2016年第7615期|197-200|共4页
  • 作者

    Feng Jiandong; Graf Michael; Liu Ke; Ovchinnikov Dmitry; Dumcenco Dumitru; Heiranian Mohammad; Nandigana Vishal; Aluru Narayana R.; Kis Andras; Radenovic Aleksandra;

  • 作者单位

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Bioengn, Lab Nanoscale Biol, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Bioengn, Lab Nanoscale Biol, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Bioengn, Lab Nanoscale Biol, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Elect Engn, Lab Nanoscale Elect & Struct, CH-1015 Lausanne, Switzerland|Ecole Polytech Fed Lausanne, Sch Engn, Inst Mat Sci & Engn, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Elect Engn, Lab Nanoscale Elect & Struct, CH-1015 Lausanne, Switzerland|Ecole Polytech Fed Lausanne, Sch Engn, Inst Mat Sci & Engn, CH-1015 Lausanne, Switzerland;

    Univ Illinois, Beckman Inst Adv Sci & Technol, Dept Mech Sci & Engn, Urbana, IL 61801 USA;

    Univ Illinois, Beckman Inst Adv Sci & Technol, Dept Mech Sci & Engn, Urbana, IL 61801 USA;

    Univ Illinois, Beckman Inst Adv Sci & Technol, Dept Mech Sci & Engn, Urbana, IL 61801 USA;

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Elect Engn, Lab Nanoscale Elect & Struct, CH-1015 Lausanne, Switzerland|Ecole Polytech Fed Lausanne, Sch Engn, Inst Mat Sci & Engn, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Sch Engn, Inst Bioengn, Lab Nanoscale Biol, CH-1015 Lausanne, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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