Steric-effect-induced enhancement of electrokinetic energy conversion efficiency in curved nanochannels with rectangular sections at high zeta potentials
Steric-effect-induced enhancement of electrokinetic energy conversion efficiency in curved nanochannels with rectangular sections at high zeta potentials
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高zeta电位下矩形截面弯曲纳米通道中空间效应诱导的动电能量转换效率增强
DOI:
10.1016/j.colsurfa.2020.124558
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发表时间:
2020-04
期刊:
影响因子:
--
通讯作者:
Chunhong Yang
中科院分区:
文献类型:
--
作者:
Yongbo Liu;Yongjun Jian;Chunhong Yang
In this work, we investigate the electrokinetic energy conversion in curved rectangular nanochannels at high zeta potentials, intending to increase the efficiency of electrokinetic generation. As we demonstrate, the geometry effect can have an important role in the investigations of the conversion efficiency. In addition, we consider the influences of steric effect (the effect of finite ion size) on the energy conversion efficiency, which is significant and can’t be ignored, especially at high surface potentials. The finite difference method is used to obtain numerical solutions for the corresponding efficiency. Our results show that, within optimized parameters ranges, the conversion efficiency can be increased by up to 50 percent by considering the influences of the steric effect. Additionally, the conversion efficiencyηshows a increasing trend with the curvature ratioδand a reversed trend with the aspect ratioARof the rectangular cross section. These results are useful for estimating and designing more effective electrokinetic energy conversion devices.
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发表时间:
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期刊:
Sensors (Basel, Switzerland)
影响因子:
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