Theoretical study on the efficiency of nanofluidic batteries
Theoretical study on the efficiency of nanofluidic batteries
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DOI：
10.1016/j.elecom.2006.08.003
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发表时间：
2006-11-01
影响因子：
5.4
通讯作者：
Shirono, Katsuhiro
中科院分区：
文献类型：
--
作者：
Daiguji, Hirofumi;Oka, Yukiko;Shirono, Katsuhiro
具有表面电荷的纳米流体通道内的压力梯度驱动的流动可以用来产生流动电流和电势。这一过程构成了纳米流体电池中电-化学-机械能量转换的基础。在这里，使用连续介质动力学计算了这种电池的效率。结果表明：(A)产生最大效率的体离子浓度取决于通道高度和表面电荷密度；(B)当流动充分发展且通道是反离子的单极溶液时，效率可以用无因次参数来表示。(C)2006爱思唯尔B.V.保留所有权利。
A pressure-gradient-driven flow inside nanofluidic channels that have a surface charge can be used to generate streaming current and potential. This process forms the basis for electro-chemo-mechanical energy conversion in nanofluidic batteries. Here, the efficiency of such batteries was calculated using continuum dynamics. Results showed that (a) the bulk ion concentration to yield maximum efficiency depends on the channel height and surface charge density and (b) the efficiency can be expressed by two-dimensionless parameters when the flow is fully developed and the channel is a unipolar solution of counter ions. (c) 2006 Elsevier B.V. All rights reserved.