3D pillared‐porous carbon nanosheets with supporting carbon pillars between the carbon layers is prepared by the carbonization of pitch on porous MgO templates. This unique structure endows the high‐rate transportation of electrolyte ions and electrons throughout the electrode matrix, resulting in excellent electrochemical performance.

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In this paper, the vibroacoustic characteristics and noise reduction behavior of a duct–membrane system with attached strip masses are investigated analytically. Fully coupled structural–acoustic interactions between membrane–mass dynamics and duct sound propagation are constructed using the energy formulation and Rayleigh–Ritz procedure. Results from the current model are compared to those calculated by finite element analysis to verify the accuracy and effectiveness of the proposed model. Effective dynamic density and average vibrational velocity of the membrane are explicitly demonstrated at the peak/valley frequencies of transmission loss. The transmission loss peak frequency for such a model can be tuned by the variation of mass position and its weight, in which the first peak is mainly dependent on the mass properties, while the second one is more sensitive to the mass position. An extension to noise reduction analysis of a three-dimensional duct–membrane coupling system is also conducted. Significant enhancement of duct silencing performance has been obtained for the first time by making use of strip mass attachment.

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