Highly Efficient Power Conversion from Salinity Gradients with Ion-Selective Polymeric Nanopores
Yun Ling, Dong-Xiao Yan, Peng-Fei Wang, Mao Wang, Qi Wen, Feng Liu** , Yu-Gang Wang
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871
Abstract :A polymeric nanopore membrane with selective ionic transport has been proposed as a potential device to convert the chemical potential energy in salinity gradients to electrical power. However, its energy conversion efficiency and power density are often limited due to the challenge in reliably controlling the size of the nanopores with the conventional chemical etching method. Here we report that without chemical etching, polyimide (PI) membranes irradiated with GeV heavy ions have negatively charged nanopores, showing nearly perfect selectivity for cations over anions, and they can generate electrical power from salinity gradients. We further demonstrate that the power generation efficiency of the PI membrane approaches the theoretical limit, and the maximum power density reaches 130 mW/m$^{2}$ with a modified etching method, outperforming the previous energy conversion device that was made of polymeric nanopore membranes.
收稿日期: 2016-04-25
出版日期: 2016-09-30
:
61.80.Ba
(Ultraviolet, visible, and infrared radiation effects (including laser radiation))
61.80.Fe
(Electron and positron radiation effects)
61.82.Pv
(Polymers, organic compounds)
07.60.Dq
(Photometers, radiometers, and colorimeters)
81.07.Pr
(Organic-inorganic hybrid nanostructures)
引用本文:
. [J]. 中国物理快报, 2016, 33(09): 96103-096103.
Yun Ling, Dong-Xiao Yan, Peng-Fei Wang, Mao Wang, Qi Wen, Feng Liu, Yu-Gang Wang. Highly Efficient Power Conversion from Salinity Gradients with Ion-Selective Polymeric Nanopores. Chin. Phys. Lett., 2016, 33(09): 96103-096103.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/33/9/096103
或
https://cpl.iphy.ac.cn/CN/Y2016/V33/I09/96103
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