Superhydrophobic membranes with electrically controllable permeability and their application to “smart” microbatteries
Superhydrophobic membranes with electrically controllable permeability and their application to “smart” microbatteries
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DOI：
10.1063/1.2965615
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发表时间：
2008-07
影响因子：
4
通讯作者：
V. Lifton;J. A. Taylor;B. Vyas;P. Kolodner;R. Cirelli;N. Basavanhally;A. Papazian;R. Frahm;S. Simon;T. Krupenkin
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文献类型：
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作者：
V. Lifton;J. A. Taylor;B. Vyas;P. Kolodner;R. Cirelli;N. Basavanhally;A. Papazian;R. Frahm;S. Simon;T. Krupenkin
通过将纳米结构和微米结构超疏水表面与电润湿现象相结合，实验证明了具有可控渗透性的电可调膜。电润湿可以动态调节液体与膜纳米特征和微米特征形成的接触角，从而控制液体通过膜的流动，从而调节整个结构的渗透性。通过将这些膜与微加工的 Zn∕MnO2 电极相结合，构建了可按需激活的“智能”电化学储能电池。已证明典型开路电压为1.55V，容量为200μAh/cm2。
Electrically tunable membranes with controllable permeability have been experimentally demonstrated by combining nanostructured and microstructured superhydrophobic surfaces with the phenomenon of electrowetting. Electrowetting allows dynamical tuning of the contact angle that the liquid forms with the membrane nanofeatures and microfeatures, thus controlling the flow of the liquid through the membrane and, therefore, tuning the permeability of the entire structure. “Smart” electrochemical energy storage cells that can be activated on demand have been built by combining these membranes and microfabricated Zn∕MnO2 electrodes. A typical open-circuit voltage of 1.55V and capacity of 200μAh∕cm2 have been demonstrated.