ABSTRACT

Multi-cell storage devices (e.g. lithium-ion batteries (LIBs)) stand as one of the most important components which are widely used in battery energy storage technology for renewable energy power system, hybrid electric vehicles and portable electronic devices due to its high energy density and low manufacturing cost. In recent years, there has been an explosion of developing new and multifunctional nanomaterials with particular interest to electrode nanomaterials (nano-MnO₂, nano-LiMn₂O₄, etc.). In such case, size-dependent mechanical-diffusion responses analysis of multilayered composite nanostructure under non-uniform concentration in-service environment will become significantly important. To address the problem, a multilayered composite nanoplates account for diffusion impedance and elastic wave impedance at the interface is considered in this research. Governing equations involving with size-dependent characteristic lengths and material constant ratio of each two adjacent layers are formulated, and then, a semi-analytical approach via the Laplace transformation is applied. Then, the obtained solutions are applied to bilayered composite nanoplates, and the influences of size effects and material constants ratio on structural responses are emphatically discussed to provide guidelines on and new insights into the optimal design and management of mechanical responses and vibration control of nano-sized multi-cell storage devices under non-uniform concentration environment, especially for the nano-coating.

摘要

多节电池储能装置（如锂离子电池（LIBs））因其高能量而被广泛应用于可再生能源电力系统、混合动力汽车和便携式电子设备的电池储能技术中的最重要的部件之一。密度大，制造成本低。近年来，对电极纳米材料（纳米-MnO ₂、纳米-LiMn ₂ O ₄， 等等。）。在这种情况下，在非均匀浓度使用环境下多层复合纳米结构的尺寸相关机械扩散响应分析将变得非常重要。为了解决这个问题，本研究考虑了多层复合纳米板来解释界面处的扩散阻抗和弹性波阻抗。制定涉及每两个相邻层的尺寸相关特征长度和材料常数比的控制方程，然后应用通过拉普拉斯变换的半解析方法。然后，将所得溶液应用于双层复合纳米板，