Abstract The direct capture of energy from salinity gradient is limited by low energetic efficiency. Here we propose to investigate an original membrane for capture of osmotic energy based conical track-etched nanopore. In order to improve the surface charge at pH 7, the nanopore was functionalized with chitosan / poly(acrylic acid) self-assembly. We observed for single nanopore a large osmotic current around 0.6 nA for a concentration gradient c,Tip/c,Base = 1000. This corresponds to energy around 25 pW per nanopore. Then, we demonstrate that this result can be upscale for a multi-pore membrane in the case of a low density of nanopores.

中文翻译：

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从适用于膜应用的功能化锥形纳米孔中收集大渗透能

摘要 从盐度梯度直接捕获能量受到能量效率低的限制。在这里，我们建议研究一种原始膜，用于捕获基于渗透能的锥形轨迹蚀刻纳米孔。为了提高 pH 7 下的表面电荷，纳米孔用壳聚糖/聚（丙烯酸）自组装功能化。对于单个纳米孔，我们观察到浓度梯度 c,Tip/c,Base = 1000 的大渗透电流约为 0.6 nA。这对应于每个纳米孔的能量约为 25 pW。然后，我们证明了在低纳米孔密度的情况下，对于多孔膜，该结果可以是高档的。