Factors influencing the performance of dielectric elastomer energy harvesters
Factors influencing the performance of dielectric elastomer energy harvesters
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DOI：
10.1117/12.847736
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发表时间：
2010-04
期刊：
影响因子：
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通讯作者：
P. Brochu;Huafeng Li;X. Niu;Q. Pei
中科院分区：
文献类型：
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作者：
P. Brochu;Huafeng Li;X. Niu;Q. Pei
我们提出了一个简化的介电弹性体能量收集模型，以探索各种材料和操作参数对产生的能量和介电弹性体发电机效率的影响，并表明在各种材料系统中可以获得高能量输出和效率。产生的能量随着偏置电压和施加的拉伸值的增加而增加，而效率很大程度上取决于偏置电压，但与拉伸的关系很弱。我们表明，增加介电常数会对某些系统中产生的能量产生重大影响，并且硬化弹性体的主要作用是将高效率区域转移到较低应变和较大电压。以这些结果为基础，我们通过实验探索一种特定的材料系统，并与我们模型的结果进行比较。还探讨了电极电阻和弹性体粘弹性的影响。
We present a simplified dielectric elastomer energy harvesting model to explore the effects of various materials and operating parameters on both the amount of energy generated and the efficiency of dielectric elastomer generators and show that high energy output and efficiency can be obtained in various materials systems. The amount of energy generated increases with increasing values of bias voltage and applied stretch while the efficiency is shown to depend strongly on bias voltage but only weakly on stretch. We show that increasing the dielectric constant can have significant impacts on the amount of energy generated in certain systems and that stiffening the elastomer has the main effect of shifting the regions of high efficiency to lower strains and larger voltages. Using these results as a basis we explore one particular material system experimentally and compare with the results from our model. The impacts of electrode resistance and elastomer viscoelasticity are also explored.