Bioinspired Ultrastrong Nanocomposite Membranes for Salinity Gradient Energy Harvesting from Organic Solutions
Bioinspired Ultrastrong Nanocomposite Membranes for Salinity Gradient Energy Harvesting from Organic Solutions
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DOI：
10.1002/aenm.201904098
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发表时间：
2020-05-01
影响因子：
27.8
通讯作者：
Lei Weiwei
中科院分区：
文献类型：
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作者：
Chen Cheng;Liu Dan;Lei Weiwei
从废弃有机溶液中提取能源的努力不仅可以支持清洁环境，还有助于缓解能源危机。在这里，一种生物启发的超强纳米复合膜是通过基于芳纶纳米纤维-氧化石墨烯（AGO）的逐层方法开发的，该纳米复合膜具有良好的机械性能，可用于从有机溶液中收集盐度梯度能量。得益于1D和2D网络联锁排列，AGO膜显示出前所未有的688 MPa的机械应力，并在有机溶剂中浸泡24 h后保持其完整性。令人印象深刻的是，当LiCl在甲醇中稀释时，工作面积为113 mm（2）的AGO膜装置产生的电流和测量的发电量分别为28 +/- 11 μ A和3140 +/- 960 nW（C-进料= 2 mol L-1）。因此，用于盐度梯度能量收集和温度相关能量收集的AGO膜的工作区域使其能够在实际应用中使用。此外，用甲醇-LiCl溶液（C-进料= 1 mol L-1）的14个电池可以产生高达1.82 V的电压来点亮液晶显示器。因此，这种AGO纳米复合膜提出了一个有前途的途径，收获盐度梯度能量从有机溶液。
Efforts to extract energy from waste organic solutions can not only support clean environments but also help to alleviate the energy crisis. Here, a bioinspired ultrastrong nanocomposite membrane is developed via the layer-by-layer method based on aramid nanofiber-graphene oxide (AGO) with good mechanical properties for salinity gradient energy harvesting from organic solutions. Benefiting from the 1D and 2D network interlocking arrangement, the AGO membrane shows an unprecedented mechanical stress of 688 MPa and maintains its integrity after soaking in organic solvents for 24 h. Impressively, when LiCl is diluted in methanol, the AGO membrane device with a working area of 113 mm(2) produces a current and a measured power generation of 28 +/- 11 mu A and 3140 +/- 960 nW (C-feed = 2 mol L-1), respectively. Thus, the working area of the AGO membrane for salinity gradient energy harvesting and temperature-related energy harvesting enables its use in practical applications. In addition, 14 cells with the methanol-LiCl solution (C-feed = 1 mol L-1) can produce a voltage up to 1.82 V to light a liquid crystal display. Therefore, this AGO nanocomposite membrane presents a promising avenue to harvest salinity gradient energy from organic solutions.